Heroes are the brightest coordinates of the nation —— Commemorating the 70th anniversary of Chinese people’s Volunteer Army’s war to resist US aggression and aid Korea.

The great spirit of resisting U.S. aggression and aiding Korea forged in the War to Resist U.S. Aggression and Aid Korea is precious spiritual wealth, which will inspire the people of China and the Chinese nation to overcome all difficulties and obstacles and all powerful enemies.

-On October 19th, 2020, when visiting the theme exhibition "Remembering the Great Victory and Defending Peace and Justice-Commemorating the 70th Anniversary of Chinese people’s Volunteer Army’s War to Resist US Aggression and Aid Korea", General Secretary of the Supreme Leader pointed out.

This year marks the 70th anniversary of Chinese people’s Volunteer Army’s war to resist US aggression and aid Korea. On October 19th, 1950, Chinese people’s Volunteer Army crossed the Yalu River and started the great War to Resist US Aggression and Aid Korea. On October 25, the volunteers launched the first battle into the DPRK-the two water tunnels battle and won. A year later, the people of China designated October 25th as the anniversary of Chinese people’s Volunteer Army’s War to Resist US Aggression and Aid Korea.

"valiant, spirited, across the Yalu river …"

70 years ago

There is such a group of hot-blooded China army.

Cross the Yalu River

Embark on the road to resist U.S. aggression and aid Korea and defend the country.

Volunteer troops to resist US aggression and aid Korea cross the Yalu River (Xinhua News Agency)

Battle of Shangganling (Xinhua News Agency)

In this team

There are many young people from Fujian.

They are armed with crude weapons in a foreign country.

Eating "a handful of fried noodles and a handful of snow"

Facing the "artillery rain" pouring all over the sky

Follow the big army and put the arrogant opponent.

Hit the negotiating table

Put the humiliation of China and the arrogance of the powers for more than 100 years

Smash to pieces

Meisi motherland jintanggu

I will recall the hero’s cold armor.

70 years have passed by.

We can’t forget

Veterans who joined the volunteer army without hesitation.

Although they are now in their eighties.

But just mention the bonfire years.

They will still straighten their backs.

be in high spirits

It’s like going back to the era of galloping on the battlefield …

Zhou Zhenrong (86 years old), born in Minhou County, Fuzhou City, was born in 1934. In June 1951, he joined the 25th Army of China People’s Liberation Army gloriously and officially became an army medical soldier. In August 1952, Zhou Zhenrong was ordered to "go north to build" with his army. After reorganization, the 25th Army was reorganized into the 2nd Battalion of the 217th Regiment, the 73rd Division of the 23rd Army. After a 1,800-kilometer emergency March, he arrived in Wonsan, the eastern front of Korea, and then moved to the middle line to fight side by side with the Korean people, and won two military medals.

Zheng Saizhao (91 years old), a native of Taijiang District, Fuzhou City, was born in December 1928. He joined the army in February 1950. Before joining the army, he studied in Fuzhou No.4 Middle School. In May, he studied and trained in the 20th Army Training Regiment of the Ninth Corps of the Third Field Army. In November, he participated in the War to Resist US Aggression and Aid Korea. He worked in the engineering department of the 60th Division of the 20th Army and the artillery regiment of the 60th Division of the 20th Army. He returned to China in October 1952.

Hou Yin (aged 89) now lives in Gulou District, Fuzhou, and was born in December 1930. In May 1949, he joined the China People’s Liberation Army and was a student of the Second Field Military and Political University. He has successively served as the squad leader of Wudang District in the Southern Anhui Military Region, the team leader of the Fourth Middle School of the Teaching Corps, and the trainee staff officer of the headquarters. In November, 1952, the general staff of the headquarters of the July 11th Brigade of the May 4th Division of Chinese people’s Volunteer Army entered the DPRK to fight, and participated in many military operations, such as anti-landing operations, repairing the Datong River Bridge in Pyongyang, and fighting bandits after the armistice, and won the international third-class merit once and the third-class merit four times.

Xin Shaokong (90 years old), living in Xiamen, was born in June 1930, joined the army in January 1946, worked as a nurse in the battle of Xiannan in North Korea in November 1950, and worked as a nurse in five battles in North Korea in May 1951. Because of his outstanding work performance, he completed the task well and won the second class merit. In December 1953, he worked actively in the medical team of the former Eighth Field Hospital of East China Military Region, and won a third-class merit.

Li Shuiyi (96 years old), a native of Yunxiao County, Zhangzhou City, was born in July 1924, joined the army in February 1948, served as the logistics department chief of the 27th Army of the Third Field Army, participated in War of Resistance against Japanese Aggression, the Liberation War and the Korean War successively, and was discharged in January 1955. Third class three times, fourth class three times. During his time as an ordnance officer in the War to Resist US Aggression and Aid Korea, he risked his life to protect his briefcase. More than 170 people in the whole company participated in the war, and only one of them was alive. In the early summer of 1955, he was demobilized from the 27th Army of the Third Field Army.

Ye Yinshui (89 years old), born in Changtai County, Zhangzhou City, was born in July 1931. He joined the army in Zhangzhou Uprising in 1949, was re-elected as a scout in the 271st Regiment of the 91st Division in June 1950, and joined the Party in December 1950. In April 1951, he was re-elected as the second squad leader in the guard battalion of the 148th Division of the 50th Army in Chinese people’s Volunteer Army, and in February 1953, he was re-elected as the deputy platoon leader in the 148th Division. In February 1955, he was demobilized and returned to Mingqian Township, Yanxi Town, Changtai County, where he served as the Party branch secretary, and made third-class merit three times.

Xie Ronghua (92 years old), a native of Nan ‘an, Quanzhou, was born in April 1928. In November 1950, he served as the correspondent of the 240 regiment of the Eighth Division of the Twenty-seventh Army, and joined the army to participate in the battle in the DPRK and participated in the famous Battle of Shangganling. In September 1953, he was discharged due to injury. Won the third class and the fourth class once.

Wu Qingbo (94 years old), born in Nan ‘an, Quanzhou, was born in September 1926. In June 1949, he joined the China People’s Liberation Army and joined the 93rd Regiment of the 31st Division of the 11th Army. In March 1951, the 93rd Regiment of the 31st Division of the 12th Army of the Volunteers entered the Korean War, served as a correspondent and monitor, and took part in the famous Battle of Shangganling. Won the second class once.

Zhang Zhen (94 years old), a native of Ninghua County, Sanming City, was born in May 1926. In June, 1949, he participated in the activity of "welcoming the peaceful liberation of the People’s Liberation Army in Ninghua" led by Zhang Zhinong, the Ministry of Industry of Ninghua City. In October 1949, he joined the army and studied at Nanchang Branch of Central South Military and Political University. In June, 1950, he served as the trainee operational staff of the 48th Army Command of the China People’s Liberation Army, and moved around Gannan and northern Guangdong with the army to fight bandits. In February 1951, he participated in the War to Resist US Aggression and Aid Korea, and served as a combat training staff in the headquarters of the 208th Regiment of Chinese people’s Volunteer Army Rocket (Katyusha). He was awarded the third class merit twice and won a military medal of the Democratic Republic of Korea and the title of "People’s Hero".

Lin Jinzhang (87 years old), born in Licheng District, Putian City, was born in 1933. At the age of 16, Lin Jinzhang joined the guerrillas in central Fujian as an underground liaison and joined the Communist Youth League. In April, 1950, Lin Jinzhang officially joined the army, belonging to the Independent 84th Division, and participated in the Battle of Dachen Island and Jiangshan Island. Later, Lin Jinzhang’s troops were ordered to enter the DPRK to participate in the War to Resist US Aggression and Aid Korea, participate in the Battle of Yichuan, and won the third-class merit twice. Later, they worked in the 62nd Engineering Bureau of the Ministry of Railways and returned to Putian in 1958.

Li Liumin (aged 87) now lives in Hanjiang District, Putian City and was born in February 1933. He joined the army in December 1952, and in the same year, he joined Chinese people’s Volunteer Army to go to the DPRK to participate in the war, serving as the deputy platoon leader. In September, 1955, he won the medal awarded by President People’s Republic of China (PRC), and won a third-class merit. Participated in the fifth campaign in 1953. In April 1957, he transferred to the former Fujian Tenth Construction Company, and in 1971, he was transferred to the Third Company of the Tenth Group of the Provincial Automobile Transportation Company.

Lin Jinkui (93 years old), a native of Xianyou County, Putian City, was born in October 1927, joined the army in 1948, joined the War to Resist US Aggression and Aid Korea on October 20, 1950, joined the 15th Army in the Battle of Shangganling in 1952, and then transferred to the Guard Company of the Third Corps, where he won a third class merit and returned to China in August 1955.

Mo Rubai (aged 87), born in December 1932, joined the army in January 1948. His unit was the Fourth Field Army of the Chinese People’s Liberation Army, and he joined the Communist Party of China (CPC) at the age of 17 in December 1949. He used to be an observer of a company of the 17th Regiment to Resist US Aggression and Aid Korea, and won several liberation medals and the Medal to Resist US Aggression and Aid Korea.

Wu Chuanshou (aged 89), born in Songxi County, Nanping City, was born in March 1931. He joined the army in March 1951 and joined the Second Battalion and Third Company of the 79th Division of the 27th Army. In October 1951, he participated in the War to Resist US Aggression and Aid Korea, and successively served as monitor, platoon leader and company assistant instructor. During this period, he won the second-class merit for his outstanding rodent control work in the anti-bacterial war.

李正大(现年93岁),居住于龙岩市新罗区,1927年1月出生,1949年11月参加福建军政大学,为第一期24中队学员,1950年7月分配福州警备司令部九十五师任连队宣传员。1951年1月北上抗美援朝,1952年12月在志愿军空军二十四支队警卫营任文教组长,立三等功1次。

华盛文(现年96岁),龙岩市连城县人,1924年7月出生,先后3次立功受奖,担任过战士、副班长、班长、副排长和排长等职。

刘斌(现年93岁),龙岩市长汀县人,1927年6月出生。1949年12月长汀入伍,1951年1月出国抗美援朝,1953年10月回国,1956年12月于防空部队独立四十二营退伍。在抗美援朝战斗中,他所在的高炮独立营有12门高炮驻扎在朝鲜平安大道,专门守卫大同江大桥等几座大桥的安全。1951年,获颁中国人民政治协商会议全国委员会抗美援朝纪念章。1953年,获颁中国人民赴朝慰问团抗美援朝纪念章。

林赞钦(现年90岁),宁德市蕉城区人,1930年2月出生。1949年9月参加中国人民解放军,入伍二十军六十三师一八九团。先后任炮兵团连文教,司令部管理股书记。1952年9月一八九团志愿军入朝作战,参加了金城战役等战斗,入朝参战期间,林赞钦先后担任司令部管理科书记、一八九团炮兵营参谋。1952年至1953年先后在炮兵团山炮连、炮兵团宣传股荣立三等功两次。

郑日富(现年94岁),宁德市屏南县人,1926年8月出生。1948年6月参加中国人民解放军。参加过解放战争,经历淮海战役瑶山、狼山攻击战、淮海战役围歼战、渡江战役白沙村战斗、强渡黄埔江北站等战斗,荣立三等功一次。1950年10月志愿军二十军八十九师炮兵团志愿入朝作战,参加了朝鲜二次战役社仓里战斗、朝鲜五十天阻击战等战斗,获得抗美援朝保家卫国功劳证、世界和平勋章、抗美援朝纪念勋章。

Xiao Yiwen (99 years old), a native of zhouning county, Ningde City, was born in February 1921, joined the army in June 1948, and joined the party in September 1949. He was a soldier to resist US aggression and aid Korea, and was disabled in the fourth degree because of the war. Xiao Yiwen, who participated in Liaoshen Campaign (won the "Third Class Merit"), Huaihai Campaign (won the "Second Class Merit") and Crossing the River Campaign (won the "Third Class Merit"), participated in the Fourth Battle of Korea (Battle of Tieyuan Highland in Shangganling) in 1951, and was then the squad leader of the eighth stretcher class of the 3rd Battalion of the 78th Division of the 26th Army. In order to save new soldiers, Xiao Yiwen was shot and injured, and lost one of his limbs.

Li Marong (90 years old), born in Shouning County, Ningde City, was born in January 1930. When the Korean War broke out in 1950, Li Marong merged with the People’s Liberation Army troops in Jiangshang District of Zhenghe County into the 10th Company of the 3rd Battalion of the 239th Regiment of the 80th Division of the 27th Army of Chinese people’s Volunteer Army, then entered Korea with the army, participated in the War to Resist US Aggression and Aid Korea, participated in the Battle of Xinxingli and the Battle of Wushengshan, and returned to China in 1953 after the war.

On March 28th, 2014, at Incheon International Airport, the Chinese salute held the coffin of Chinese people’s Volunteer Army’s martyr. (Xinhua News Agency)

On September 28th, 2020, the remains of the seventh batch of volunteers in Korea returned to China for burial ceremony. From 2014 to 2020, a total of 716 volunteers’ remains in Korea returned to China for burial. (CCTV News)

Review the vicissitudes of history

Some people are back.

Some people, sacrificed.

According to incomplete statistics

Since October 1950

Chinese people’s Volunteer Army went to the DPRK to fight.

The War to Resist US Aggression and Aid Korea began.

By July 1953,

The two sides signed the Korean Armistice Agreement

Victory over the War to Resist US Aggression and Aid Korea

The total number of victims in Chinese people’s Volunteer Army is 197,653.

Among them, more than 1,200 people are from Fujian.

Those martyrs who are buried in foreign countries.

The heroic spirit lives in the hearts of the people forever.

Names and deeds of heroes

It has already been written into the glorious history of the people’s army.

The heroic spirit will live on in China forever.

Due to the rush of time, long history and incomplete historical materials, it is difficult to collect personal stories. Now, according to the personal data submitted by various districts and cities in the province, some brief stories of veterans of the War to Resist US Aggression and Aid Korea are selected to look back on those passionate years to commemorate the 70th anniversary of Chinese people’s Volunteer Army’s war to resist US aggression and aid Korea abroad. )

——END——

Text finishing | Ye Mingzhu

Picture material | Integrated with various districts and cities, and partly from the Internet.

Contributed by | Supervision Committee of Ningde Municipal Commission for Discipline Inspection Shouning County Commission for Discipline Inspection

Original title: "Heroes are the brightest coordinates of the nation —— Commemorating the 70th anniversary of Chinese people’s Volunteer Army’s War to Resist US Aggression and Aid Korea"

Read the original text

Engine Technical Tour (13) Analysis of C4LEC8 Engine

  【Pacific Auto Network Technology Channel】 1.6L was once the first choice for family cars because of its sufficient power and relatively low fuel consumption. However, with the improvement of consumption level, the size of family cars is getting bigger and bigger, and the power of 1.6L displacement is just enough. If the vehicle is fully loaded, it will be a bit of a small horse-drawn cart, and the driving pleasure has long been gone. 2.0L displacement power is sufficient, but high fuel consumption is inevitable. To make a compromise, 1.8L displacement power and fuel economy are the most suitable. I also saw this opportunity, and developed a brand-new 1.8L engine in five years. This engine code is EC8, which is currently mounted on Dongfeng models. This issue will bring you the technical analysis of Dongfeng EC8 1.8L CVVT engine.

 

Wonderful review of the last issue

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● Basic engine parameters

Basic parameters of Dongfeng Citroen EC8 1.8L CVVT engine name Dongfeng Citroen EC8 1.8L CVVT Engine Air intake form Cylinder arrangement form four cylinder inline stroke Four stroke Number of valves per cylinder four Cylinder head/block material Aluminum alloy/cast iron admission gear DOHC (overhead double camshaft) Oil supply mode bore 79mm piston stroke 92.5mm Compression ratio 11:1 Maximum power 102kW(139PS)/6300rpm maximum torque 172Nm/3500rpm Fuel label 93 (Jing 92) Oil type 5W-30 All synthetic engine oil (original factory standard)
Watchmaking: www.PCauto.com.cn    

● Research and development background of ●EC8 engine project

  The research and development project of EC8 1.8L engine was put forward at the board of directors of Shenlong Company as early as April 2008, and was officially put into production in April 2013. The whole project development took five years.

Engine technical tour (13) Detailed explanation of Dongfeng Citroen EC8 engine

  In the two years before April, 2010, China market analysis and product technical scheme determination were mainly carried out. According to market analysis and laws and regulations, 1.8L will be the gold emission in the household market, and the power performance of 1.8L can best meet the household demand, while the fuel consumption and carbon dioxide emission also meet the environmental protection requirements.

 

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● Fuel consumption of ●1.6L and power of 2.0L displacement.

  EC8 is a brand-new engine launched by PSA for China market. EC8 engine claims to have the fuel consumption of 1.6L displacement engine and the power of 2.0L displacement engine, and its performance level is in the advanced position of naturally aspirated engine.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  It can be seen from the EC8 engine diagram that about 90% of the peak torque has erupted in the engine at 1500 rpm, and the torque curve is relatively gentle and lasts until 6000 rpm.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  It has good dynamic performance in the daily use speed range, and reaches the peak torque at the earliest in the same class. The most intuitive feeling is that when the start accelerates, the low speed is very fast. The output that can be obtained in the 1500-2000 shift range that Chinese people are used to can be described as a little bit of power and a steady stream.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  With the power of the 2.0L displacement engine, where does the fuel consumption of the 1.6L displacement engine come from? Of course, it depends on technology. For example, EC8 engine adopts cylinder honing technology, micro-grooved tile technology, variable displacement pump, DLC coated hydraulic tappet, intelligent timing gear damping technology, belt and so on. Listen to me together.

 

Before writing this article, Xiao Bian also visited the production workshop of EC8 engine. If you are interested, you can click the following link:

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● Flat-top honing and micro-grooved tile technology

  In terms of process flow, the cylinder block of EC8 engine is carried out in a small number of times by gradually adding power. In the last finishing process — — Flat-top honing

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  Flat-top honing can shorten the early running-in process and improve the fuel consumption and engine oil consumption during the running-in period. It can form a multi-reticulated small platform, which can greatly improve the lubrication condition of the friction pair, prolong the service life of the cylinder hole and piston ring friction pair and prolong the time. This technology is also widely called "pre-running-in" by experts, which can minimize the running-in wear of users when driving new cars, improve the reliability of vehicles to a greater extent, and save users’ maintenance costs.

  In addition, crankshaft bearing has also adopted the micro-grooved tile technology. Micron grooves are machined on the surface of bearing bush by special machining method. The application of micro-grooved tile technology improves the compliance of bearing bush and accelerates the early running-in between bearing bush and crankshaft. Improve the fluidity of lubricating oil in the minimum oil film thickness area and enhance the cooling effect of engine bearing bush; The distribution area of lubricating oil film along the width direction of bearing bush is larger, which can increase the thickness of oil film in most high-pressure working areas and prevent the bearing bush from sticking.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  The application benefits of micro-grooved tile technology are to reduce the mechanical loss of moving parts and improve the engine efficiency; Improve the reliability of moving parts and prolong the service life.

  The combination of cylinder flat-top honing technology and crankshaft bearing micro-groove tile technology reduces the power consumption in crankshaft operation engineering. The inspection in the assembly workshop shows that the friction of crankshaft rotation needs to consume 3.6N·m engine torque.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

 

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● Variable pump

  There is also an oil pump directly connected with, and the operation of the oil pump also consumes a part. According to relevant foreign research reports, the use of variable displacement oil pump can generally reduce the fuel consumption of the engine by 1%-2%. To reduce the power consumption of the oil pump, it is necessary to match the oil supply of the oil pump with the actual oil demand of the engine. The use of variable displacement oil pump can meet this requirement.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  The variable displacement oil pump used in EC8 engine is provided by Magna Powertrain (Changzhou) Co., Ltd.. EC8 oil pump is a variable displacement vane pump, which can be mainly divided into sliding variable vane pump and swinging variable vane pump. The variable principle of the two types of vane pumps is basically the same: the eccentricity between the outer adjusting ring and the rotor is changed by sliding or swinging, and then the displacement of the vane pump is changed.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  When the feedback oil pressure reaches the variable set value, it is compressed, and the outer adjusting ring slides or swings, so that the eccentricity between the inner ring and the outer ring of the blade is reduced, and the variation of the oil pressure cavity formed between the blade and the inner and outer rings is also reduced correspondingly during the operation of the oil pump, thus reducing the oil pump flow; When the feedback oil pressure decreases, the spring gradually returns to reset the adjusting ring.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  Main oil passage pressure feedback pressure control mode, which takes the feedback pressure point as the main evaluation point of engine pressure, has small pressure fluctuation and is close to the main lubricating parts, and can accurately reflect the engine oil pressure demand. By adopting main oil passage pressure feedback, the pressure control is more accurate and close to the engine demand, and the oil pump efficiency is higher.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  The variable displacement pump keeps the pressure of the main oil passage of the engine at medium and high speed at a relatively constant value, which can meet the engine oil demand, reduce power consumption and play the role of energy saving and emission reduction. The variable displacement vane oil pump of EC8 engine is at the top level in China, with low power consumption and stable oil pressure control. Users can reduce engine power consumption and fuel consumption when driving a vehicle. 

 

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●DLC coated hydraulic tappet

  The working surface of EC8 hydraulic tappet is also coated with Diamond-like Carbon for short. The surface of DLC coating is black, which has comprehensive excellent properties such as stable quality, good adhesion with matrix, good wear resistance, low friction coefficient and good corrosion resistance.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  The hardness of DLC coating can reach 8000HV, the friction coefficient is as low as 0.05~0.2, and the coating thickness is 0.5-10μ M, the highest heat resistance reaches 800℃.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  After the tappet is coated, the surface friction coefficient is significantly reduced and the hardness is higher, which significantly improves the wear resistance of the tappet surface and greatly reduces the friction loss between the cam and the tappet surface. While reducing the working noise, it also reduces the power consumption of the engine, thus achieving the purpose of reducing fuel consumption and reducing the cost of car use.

● Intelligent timing gear damping technology

  Through the special formal gear profile design, a controlled and periodic phase interference is formed to eliminate the torsional vibration of camshaft and reduce the dynamic tension of belt.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  The processed crankshaft timing gear is approximately oval, which can significantly reduce the timing error of camshaft, effectively reduce the dynamic tension of belt, effectively reduce the dynamic and static axle load and improve the service life of belt.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  It can be seen from the curve that the vibration of the intelligent timing system is reduced and the engine runs quieter. According to reports, the life of the intelligent timing system is equivalent to that of the engine. The belt tension is reduced and the bearing life is effectively improved. It reduces the noise and vibration of the user’s timing system when driving, and improves the driving comfort of the vehicle.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

 

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  EC8 piston adopts the latest technology of FM-Federal-Mogul Company: ELASTOVAL II structure and fully floating piston pin, which optimizes the piston design structure, removes the back mass of piston ring support area, reduces the piston weight and friction loss, and realizes the lightweight of the piston while maintaining sufficient strength of the piston. Elastoval II comprehensively considers the skirt, thickness, profile and other factors, combined with the cylinder clearance and pin hole eccentricity, in order to achieve the best energy-saving and noise-reducing effect, and is conducive to reducing fuel consumption and increasing its fuel.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  EC8 improves the engine performance to a great extent by increasing the volume of the piston head projection to 11. The special piston structure design also improves the reliability of engine operation and reduces the cost of users’ cars.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

●CVVT timing technology

  CVVT is a technology that changes the opening time of camshaft by electro-hydraulic control system, so as to control the required valve overlap angle. This is not a novel automobile technology. Now many engines have adopted this mature and reliable technology.

Engine Technology Tour (13) Analysis of Dongfeng Citroen EC8 Engine

  EC8 engine adopts the VVT technology of INA, which can adjust the intake valve timing and phase in a wide range of angles to ensure that the engine can meet the requirements of middle and low speed and high speed at the same time. The driving comfort, fuel economy and emission are obviously improved. CVVT technology can ensure the charging efficiency of the engine under different working conditions and improve the low-speed end torque by 5-10%. 5-8% high-speed power is increased, so that users can get better power output when starting at low speed, and high engine power is maintained at medium and high speed. The fuel economy can be improved by 1-3%, making the vehicle more fuel efficient. Under the limited NOx level, HC emission can be reduced by 25% at most, and the stability at idle speed is improved, and the driving comfort is better.

  Summary:Throughout the whole paper, EC8 engine should have many advanced engine technologies besides the original mature, stable and reliable technologies. The development time is relatively short, the cost is relatively low, and the existing market resources can also be used to some extent. The same is true from the user’s point of view. What users are most worried about is whether the performance is stable or not, and it is not easy to buy accessories when there is a fault, which just solves these problems. With five years’ unremitting efforts, the brand-new EC8 engine has been developed with "high efficiency, low consumption and high reliability" in consideration of power, fuel consumption, comfort and reliability. The slogan of the power of the 2.0L engine and the fuel consumption of the 1.6L displacement engine will never be groundless.

 

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Create new great achievements with new great struggles (thoroughly study and implement Socialism with Chinese characteristics Thought of the Supreme Leader in the New Era)

  In the new era, the mountains and rivers are picturesque and the tide is surging. We have experienced three major events of great practical significance and far-reaching historical significance for the cause of the Party and the people: first, we are welcoming the centenary of the founding of the Communist Party of China (CPC); second, Socialism with Chinese characteristics has entered a new era; third, we have completed the historical task of getting rid of poverty and building a well-off society in an all-round way, and achieved the goal of the first century. This is a historic victory won by the United struggle of the people of the Communist Party of China (CPC) and China, a historic victory that shines through the history of the development of the Chinese nation, and a historic victory that has a far-reaching impact on the world, and has written a splendid chapter of Socialism with Chinese characteristics in the new era.

  The new journey, the people are heroic and have great prospects. The 20th National Congress of the Communist Party of China, held at the critical moment when the whole Party and the people of all ethnic groups have embarked on a new journey of building a socialist modern country in an all-round way and marched towards the goal of the second century, sounded the clarion call of the times for a new journey of endeavor. General Secretary of the Supreme Leader issued a great call to "compose a more splendid chapter of Socialism with Chinese characteristics in the new era" at the 20th Party Congress. What kind of more gorgeous badge is this? In the face of the stormy international environment and the arduous and arduous task of domestic reform, development and stability, can we write and how to write a more gorgeous chapter? To forge ahead in a new journey, we must grasp and answer these major questions well and create new great achievements with new great struggles.

  The 20th National Congress of the Communist Party of China painted a magnificent picture of Socialism with Chinese characteristics in the new era.

  Bear the eternal great cause in mind, and the centenary only ushers in the prime of life. The 20th National Congress of the Communist Party of China made a macro-prospect of the two-step strategic arrangement for building a socialist modernization power in an all-round way, further clarified the overall goal of China’s development by 2035, described the beautiful picture of achieving the goal of the second century, and focused on the strategic tasks and major initiatives for the next five years. This series of strategic arrangements, objectives and tasks have defined the timetable and road map for building a socialist modern power in an all-round way, and drawn a grand blueprint for building a socialist modern country in an all-round way and comprehensively promoting the great rejuvenation of the Chinese nation with Chinese modernization.

  The five years from the 20th National Congress of the Communist Party of China is a crucial period for building a socialist modern country in an all-round way. The Party’s Report to the 20th CPC National Congress made arrangements for all aspects of work in all fields. These important arrangements cover various fields such as reform, development and stability, internal affairs, foreign affairs and national defense, and governing the party, country and army. They are an organic whole determined according to the "five in one" overall layout and the "four comprehensive" strategic layout, profoundly embody the China characteristics, essential requirements and major principles of Chinese modernization, and are action guides for leading and promoting the comprehensive construction of a socialist modernized country to make a good start. Closely contact the new strategic opportunities, new strategic tasks, new strategic stages, new strategic requirements and new strategic environment facing China’s development, and implement various strategic arrangements with creative work. It will promote new breakthroughs in China’s high-quality economic development, take new steps in reform and opening up, continuously develop people’s democracy throughout the process, improve Socialism with Chinese characteristics’s rule of law system, enrich people’s spiritual and cultural life, continuously enhance the cohesion of the Chinese nation and the influence of Chinese culture, make solid progress in the common prosperity of all people, achieve remarkable results in the construction of beautiful China, consolidate national security, and comprehensively and strictly manage the party in depth. By then, the living standards of our people will be further improved, the quality and quantity of China’s development will be further improved, and building a socialist modern country in an all-round way will have a more solid foundation and gain stronger kinetic energy.

  The 20th National Congress of the Communist Party of China focused on continuously realizing people’s yearning for a better life, put forward new and higher requirements for the goals and tasks of China’s development in 2035, and further demonstrated the party’s initial mission and the superiority of the socialist system. By 2035, when socialist modernization is basically realized, China’s economic strength, scientific and technological strength and comprehensive national strength will greatly jump, and the per capita GDP will reach a new level and reach the level of moderately developed countries. In economic construction, we will achieve high-level scientific and technological self-reliance, build a strong country in science and technology, and enter the forefront of innovative countries; Build a modern economic system, form a new development pattern, and basically realize new industrialization, informationization, urbanization and agricultural modernization. In terms of political construction, we will basically modernize the national governance system and governance capacity, improve the people’s democratic system in the whole process, and basically build a country ruled by law, a government ruled by law and a society ruled by law. In terms of cultural construction, we will build a cultural power, the country’s cultural soft power will be significantly enhanced, and the influence of Chinese culture will be more extensive and in-depth. In terms of social construction, the people’s life in China will be happier and better, the per capita disposable income of residents will reach a new level, the proportion of middle-income groups will be significantly increased, basic public services will be equalized, rural areas will basically have modern living conditions, society will maintain long-term stability, and education, talent, sports and healthy China will be built, and more obvious substantive progress will be made in the all-round development of people and the common prosperity of all people. In the construction of ecological civilization, China will widely form a green production and lifestyle, and carbon emissions will stabilize and decline after reaching the peak.The ecological environment has basically improved, and the goal of a beautiful China has basically been achieved. In terms of overall development and security, China’s national security system and capabilities will be comprehensively strengthened, and national defense and military modernization will be basically realized. The long-term goal of socialist modernization is basically realized, which fully reflects that the new era is an era in which people of all ethnic groups in China unite and struggle, constantly create a better life, and gradually realize the common prosperity of all people.

  According to the two-step strategic arrangement, from 2035 to the middle of this century, we will continue to struggle on the basis of basically realizing modernization, and by the centenary of the founding of New China, we will build China into a prosperous, strong, democratic, civilized, harmonious and beautiful socialist modernization power. By then, China’s material civilization, political civilization, spiritual civilization, social civilization and ecological civilization will be comprehensively improved, the national governance system and governance capacity will be modernized, and China will become a country with leading comprehensive national strength and international influence, and the common prosperity of all people will be basically realized. Our people will enjoy a happier and healthier life, and the Chinese nation will stand among the nations of the world with a more high-spirited attitude. With a history of more than 5,000 years of civilization, the Chinese nation is full of unprecedented vitality and will make new and greater contributions to all mankind.

  In the new era, the magnificent prospect of Socialism with Chinese characteristics’s more splendid pageant has begun, and the new journey of building a strong country and national rejuvenation is encouraging and inspiring. Accomplishing the central task and implementing the two-step strategic arrangement, China’s population of more than 1.4 billion will step into a modern society as a whole, exceeding the total population of developed countries, which will completely rewrite the process, territory and situation of world modernization, expand the ways for developing countries to move toward modernization, make scientific socialism glow with new vitality in China in the 21st century, and write an unprecedented glorious chapter in the history of human development.

  We have sufficient confidence to write a more splendid chapter of Socialism with Chinese characteristics in the new era.

  In the new era, under the strong leadership of the CPC Central Committee with the Supreme Leader as the core and under the scientific guidance of Socialism with Chinese characteristics Thought of the Supreme Leader in the new era, we have made extraordinary achievements in stabilizing the economy, promoting development, fighting poverty, building a well-off society, controlling epidemics, resisting major disasters, coping with emergencies and turning crises into crises. Those world-famous human miracles, those indomitable struggles in spite of difficulties, and those tenacious struggles in spite of rain and shine are all engraved in the footsteps of historical progress, providing us with strong determination and motivation to make unremitting efforts and forge ahead bravely. Striving for a new journey, the prospect is extremely bright; Writing a new chapter is more emboldened.

  "Two Establishments" is the greatest confidence. To March on a magnificent journey, we need to lead the core to steer the direction; To achieve great achievements in the future, we need scientific theory to guide us. Since the new era, it is the "two establishments" that lead and ensure the cause of the party and the state to overcome the difficulties and obstacles that followed and achieve remarkable achievements. In the face of the "three-phase superposition" and the new normal of economic development, it is proposed to implement the new development concept, build a new development pattern and promote high-quality development. China’s economy has climbed over the hill and achieved a historic leap; In the face of the epidemic in the century, it is proposed to always adhere to the people first, life first, and efficiently coordinate epidemic prevention and control and economic and social development. China has created a miracle that a populous country has successfully emerged from the epidemic in the history of human civilization; Facing the headwinds and counter-currents in the century-old changes, this paper puts forward that we should firmly stand on the right side of history and the side of human civilization and progress, promote the construction of a community of human destiny, open up new situations in changes, and turn crises into opportunities in chaos … … The key choices, overall strategic plans, and a series of far-sighted new ideas, ideas and strategies have fully demonstrated the historical initiative, extraordinary theoretical courage, outstanding political wisdom and strong mission of the Supreme Leader General Secretary as a Marxist politician, thinker and strategist, and fully demonstrated the truth power and practical power of the Supreme Leader’s Socialism with Chinese characteristics Thought in the new era. Practice has fully proved that ""Two Establishments" is the decisive factor to promote the historic achievements and changes in the cause of the party and the state, the greatest certainty, the greatest confidence and the greatest guarantee to overcome all difficulties and obstacles and deal with all uncertainties, and it is of decisive significance to the development of the cause of the party and the state in the new era and to promote the historical process of the great rejuvenation of the Chinese nation. Soak in the wind and rain, quench into steel. We have incorporated the comprehensive and strict administration of the Party into the "four comprehensive" strategic layout, comprehensively strengthened the Party’s leadership, and systematically improved the Party’s leadership system. After revolutionary forging since the new era, the Party has become stronger and more energetic, and its political leadership, ideological leadership, mass organization and social appeal have been significantly enhanced, and it has always been a strong leadership core in the historical process of upholding and developing Socialism with Chinese characteristics. On the way forward, as long as we firmly support the "two establishments", resolutely implement the "two maintenances", unite more closely around the CPC Central Committee with the Supreme Leader as the core, fully implement the Supreme Leader’s Socialism with Chinese characteristics Thought in the new era, unite as one and keep pace, we will certainly be able to overcome various risks and challenges and create new great achievements.

  The people are the most solid support. Jiangshan is the people, and the people are Jiangshan. The great achievements of the new era are made by the party and the people. From the model of the times to the most beautiful figures, from the dim light of mortals to heroic feats, the figures of dreams and dreams, and the "you, me and him" who strive for progress show the enterprising attitude, ambition and creative power of the people of China in the new era. In the new era, our party firmly insists on doing everything for the people, relying on the people, ruling for the people and relying on the people, constantly solving the people’s urgent difficulties and worries, and constantly realizing the people’s yearning for a better life; Develop people’s democracy in the whole process, respect the people’s dominant position and initiative, let the people participate more extensively and deeply in the management of state and social affairs, and fully stimulate the wisdom and strength contained in the people. In the new era, the people of China are more confident, self-reliant and self-reliant, greatly enhancing their ambition, showing unprecedented historical consciousness and initiative, and becoming an inexhaustible source of strength to promote the development of the cause of the party and the country. "if you can use all your strength, you will be invincible in the world." China people’s tenacious vitality, deep cohesion, tenacity and endurance, and great creativity are the fundamental forces for us to March forward in rain or shine. As long as we always take the promotion of people’s well-being, the all-round development of people and the common prosperity of all people as the starting point and the end result, respect people’s creation, concentrate people’s wisdom, share weal and woe with the people, and unite with the people,We will certainly be able to comprehensively promote the great rejuvenation of the Chinese nation with Chinese modernization.

  Great struggles accumulate valuable experience. It seems to be the most extraordinary, but it is easy but hard to achieve. Since the new era, the complexity of the situation we are facing, the severity of the struggle and the arduous task of reform, development and stability are rare in the world and history. The overall situation of the great rejuvenation strategy of the Chinese nation and the great changes that have never happened in the world in a century have stirred up each other. China’s reform and development have entered a critical period and deep water areas, and the task of reform, development and stability is arduous and arduous. The party United and led the people to overcome difficulties, forge ahead, and promoted the cause of the party and the state to stand at a new historical starting point. We have always maintained our strategic strength, carried forward the spirit of struggle, calmly responded to the impact of multiple unexpected factors at home and abroad, unswervingly followed our own path, and "let the wind and waves rise and sit firmly on the fishing boat." In the face of the complicated situation in which various contradictions are intertwined, we adhere to the problem orientation, grasp the main contradictions, and open up the work situation with solving practical problems as a breakthrough, so as to "make full use of everything at once". In the face of many dilemmas and difficulties, we insist on using the system concept to observe the situation, analyze problems, scientifically demonstrate, compare and select the best, and control the complex situation with overall consideration. "It is still calm to fly in chaos." The party led the people in a great struggle with many new historical characteristics, which accumulated valuable experience for us to bravely move forward in the new journey. As long as we strengthen our strategic self-confidence, strengthen our belief in winning, dare to face up to problems, be good at discovering problems and be brave in solving problems,Deal with the overall and local, current and long-term, macro and micro, major and minor contradictions, special and general relations, do a good job in systematic planning and strategic planning, and concentrate on doing your own thing well. Even in the face of high winds, high waves and even stormy waves, the great ship China can break through the waves and make steady progress.

  The material foundation is more solid. General Secretary of the Supreme Leader pointed out: "China’s development is still in an important period of strategic opportunities" and "China’s basic characteristics of sufficient economic potential, strong resilience, large room for maneuver and many policy tools have not changed". Strong material foundation, abundant development kinetic energy and huge development potential give us more confidence in pursuing our own development in an unstable and uncertain world. The bottom spirit comes from strength, vitality and potential. Today, China is the second largest economy in the world, and its status as the largest country in manufacturing, trade in goods and foreign exchange reserves has been continuously consolidated and improved. From 2020 to 2022, under the difficult situation of global epidemic and high inflation, China not only stabilized the economic market, kept the bottom line of people’s livelihood, and maintained social stability, but also kept ahead among the world’s major economies with an average annual growth rate of about 4.5%, achieving medium-high growth on the basis of a high base. "Space House" roams the sky, "Struggler" dives 10,000 meters deep, online consumption and classes on the cloud are in full swing, 22 free trade pilot zones cover the East, West, North, South and South China, and Hainan Free Trade Ports set sail, and the first five national parks spread the picture of harmonious coexistence between man and nature … … China’s global innovation index ranked twelfth in 2023, and the added value of new industries, new formats and new models accounted for more than 17% of GDP in 2022.The social security network has become more and more dense and the level of security has been steadily improved, and it has embarked on a road of development with higher quality, more efficiency, fairer, more sustainable and safer. As long as we firmly grasp the primary task of high-quality development, earnestly implement the new development concept and accelerate the construction of a new development pattern, we will certainly be able to open up new fields and new tracks for development and open up a broader development space for Chinese modernization.

  The system guarantee is more perfect. The rise and fall of a country depends on the system. Since the new era, our party has comprehensively deepened reforms, put system construction in a more prominent position, dared to break into deep-water areas, dared to bite hard bones, and pushed forward reforms in important areas and key links. From tamping the foundation, erecting columns and beams, to all-round promotion, accumulating strength, and then to system integration, coordination and high efficiency, the basic institutional framework in various fields has been basically established, and historical changes, systematic reshaping and overall reconstruction have been realized in many fields. Socialism with Chinese characteristics’s system has become more mature and stereotyped, and the modernization level of the national governance system and governance capacity has been significantly improved. The new national system gathers all parties’ joint efforts, accumulates innovative kinetic energy, and promotes high-level science and technology to take new steps of self-reliance and self-improvement; The system of strictly administering the Party in an all-round way is scientific, standardized and efficient. The loose and soft state of administering the Party has been fundamentally reversed, and the comprehensive and strict administration of the Party has been continuously deepened … … The remarkable advantages of China’s national system and national governance system are transformed into strong governance efficiency, and the powerful system is used to overcome risk challenges and achieve great things. Institutional advantage is the greatest advantage of a country, and institutional competition is the most fundamental competition among countries. A more mature and stereotyped institutional system provides a fundamental guarantee for us to gain a firm foothold and develop in the fierce international competition. As long as we strengthen institutional self-confidence, persist in innovation, focus on giving play to and enhancing China’s institutional advantages, constantly improve and develop the Socialism with Chinese characteristics system, and promote the modernization of the national governance system and governance capacity, we can continue to "The new atmosphere of "China’s rule" continued to write a new chapter of "China’s rule".

  Turn the grand blueprint of Chinese modernization into a beautiful reality step by step.

  The road to simplicity is the most important thing. To persist in and develop Socialism with Chinese characteristics, we have walked through thousands of waters in Qian Shan, and we still need to wade through mountains and rivers. General Secretary of the Supreme Leader pointed out: "The new journey is an expedition full of glory and dreams. There is no shortcut, only hard work." If we want to create new great achievements with new great struggles, we must bear in mind that upholding the Party’s overall leadership is the only way to uphold and develop Socialism with Chinese characteristics, Socialism with Chinese characteristics is the only way to realize the great rejuvenation of the Chinese nation, Chinese people are the only way to create great historical achievements, implementing the new development concept is the only way for China to develop and grow in the new era, and comprehensively administering the Party strictly is the only way for the Party to keep its vitality forever and take a new road to catch the exam. We should fully implement the Supreme Leader’s Socialism with Chinese characteristics Thought in the new era, cherish and always adhere to the "Five Necessary Ways", regard the promotion of Chinese modernization as the greatest politics, unite the overwhelming majority of the people under the unified leadership of the Party, focus on the central task of economic construction and high-quality development, turn the grand blueprint of Chinese modernization into a beautiful reality step by step, and write a more splendid chapter for Socialism with Chinese characteristics in the new era.

  Enhance confidence in winning. General Secretary of the Supreme Leader pointed out: "The people have confidence, and the country has a future and the country has strength." As long as you have confidence, loess becomes gold. We should be good at drawing wisdom, boosting confidence and increasing strength from the road we have traveled. Since the new era, under the complicated situation of the century-long changes and the century-long epidemic, Socialism with Chinese characteristics’s roads, theories, systems and cultures have been full of vitality, the great rejuvenation of the Chinese nation has entered an irreversible historical process, and the people of China have become more confident and self-reliant. Practice has proved that scientific theory is the "golden key" for us to promote our work and solve problems. The more we learn, the more confident we are, and the more powerful we learn. We should learn to understand and implement Socialism with Chinese characteristics Thought of the Supreme Leader in the new era, adhere to the integration of learning, thinking and application, and unify knowledge, belief and practice, and turn this important thought into a powerful force to strengthen ideals, temper party spirit, guide practice and promote work, consolidate and expand the educational achievements of Socialism with Chinese characteristics Thought in the new era of the Supreme Leader, and turn it into the effect of promoting high-quality development. Adhere to a comprehensive, dialectical and long-term perspective to scientifically analyze the situation, grasp the general trend of development, and firmly develop confidence. We must not only see the rapid changes in the external environment of China’s development, but also increase the number of uncertain and unpredictable factors; We must also see that China has embarked on the road of high-quality development. The development has a more perfect institutional guarantee, a more solid material foundation and a more active spiritual strength. The favorable conditions are stronger than the unfavorable factors, and the economic resilience is strong and the potential is sufficient. Wide room for manoeuvre,The long-term positive fundamentals have not changed and will not change. We are confident and more capable of achieving long-term stable development, and constantly bring new impetus and new opportunities to the world with the new development of China.

  Always unite and struggle. Strength comes from unity, and happiness comes from struggle. Unity formed around a clear goal of struggle is the strongest unity, and struggle based on close unity is the most powerful struggle. In order to build a socialist modern country in an all-round way and comprehensively promote the great rejuvenation of the Chinese nation, we must persistently use the supreme leader’s Socialism with Chinese characteristics Thought in the new era to forge a soul, use the Party’s innovative theory to guide the correct direction of United struggle, and consolidate the common ideological foundation of United struggle. It is necessary to consolidate and strengthen the unity and unity of the Party, more consciously and profoundly understand the decisive significance of the "Two Establishments", always maintain a high degree of unity with the CPC Central Committee with the Supreme Leader as the core in ideological and political actions, conscientiously implement democratic centralism, and strictly abide by the party’s political discipline and rules. Consolidate and strengthen the unity between the party and the people, practice the people-centered development thought, promote the fruits of reform and development to benefit all the people more fairly, always want to be together with the masses, always maintain the flesh-and-blood ties between the party and the people, and unite the people around the party as widely as possible. Consolidate and strengthen the great unity of the Chinese people at home and abroad, adhere to the great unity and unity, unite all forces that can be United, mobilize all positive factors that can be mobilized, unite the struggle forces of one mind and forge ahead, and form a vivid situation of hand in hand and United struggle.

  Keep working hard. The people of China have great dreams, and they have the great spirit of hard work and hard work to realize their great dreams. Historical achievements and changes have taken place in the cause of the party and the state in the new era, which fully proves that great achievements are made and socialism is done. Only by hard work can we prosper the country, strengthen the country and enrich the people. History will not live up to those who do it. On the new journey, we should vigorously carry forward the spirit of self-reliance and hard struggle, be aware of and brave in shouldering heavy burdens, be tenacious, bear hardships and stand hard work, work hard, be not afraid of fatigue and difficulties, and strive to create achievements that can stand the test of practice, people and history. We must implement it to the letter, resolutely implement it, be realistic and pragmatic, dare to do good deeds, and implement the decision-making and deployment of the CPC Central Committee. Start a business with the spirit of nailing, do one thing after another, do it year after year, stick to a blueprint to the end, drip through the stone for a long time, and turn the great dream into reality step by step.

  Be brave in tenacious struggle. Dare to struggle and dare to win is an invincible and powerful spiritual force for the people of the Communist Party of China (CPC) and China. Struggle for security means safe survival, compromise means safe death; Struggle for development leads to prosperity, while compromise leads to decline. "The various struggles we face are not short-term but long-term, at least with the whole process of achieving the goal of the second century." Our party has come to this day by struggle, and it is bound to win the future by struggle. On the new journey, we must always maintain the dauntless spirit of meeting the brave in the narrow road, and the more difficult and dangerous it is, the more forward we will be, be prepared for danger in times of peace and prepare for a rainy day, and be prepared to withstand the major test of high winds, high waves and even stormy waves. We should dare to speak out against the wrong words and deeds related to political principles, to tackle all kinds of difficult contradictions in economic and social development, to cure all kinds of unhealthy practices and negative corruption within the party, and to be unswerving and courageous in all kinds of acts that discredit the image of the party and the country and harm the interests of the country and the people by hostile forces. We should strengthen our fighting skills, not only dare to struggle, dare to encounter difficulties, but also be good at struggle, stress the art of struggle, be good at grasping the main aspects of major contradictions and contradictions, grasp the overall situation, prioritize and rationally choose the way of struggle, overcome all kinds of difficulties and challenges on the road ahead with all our strength, and open up a new world of career development by tenacious struggle.

  Take the initiative. The General Secretary of the Supreme Leader stressed: "We must persist in independence, self-reliance, the development of the country and the nation on the basis of our own strength, and firmly hold the destiny of China’s development and progress in our own hands." Only by grasping the law and general trend of historical development can we always grasp the historical initiative of the development of the cause of the party and the state. On the new journey, we should unite more closely around the CPC Central Committee with the Supreme Leader as the core, persist in observing, grasping and leading the times with the Supreme Leader’s New Era Socialism with Chinese characteristics Thought, better coordinate the overall situation of the great rejuvenation strategy of the Chinese nation and the great changes that have never happened in the world in a century, gain a profound insight into the times, the situation, the crisis and the opportunity, and actively learn to adapt to changes. Be more proactive, face up to difficulties, and perform your duties with proactive and energetic creative work. Be more proactive in coping with changes, vigorously promote reform and innovation, constantly shape new development momentum and new advantages, and fully stimulate the creative vitality of the whole society. Be more proactive in preventing and resolving risks, grasp the initiative in work and fight for development in dealing with risks. As long as we put the major decision-making arrangements made by the 20th National Congress of the Communist Party of China into action step by step, see the results, strengthen our confidence, work hard with one heart and one mind, and forge ahead courageously, we will certainly win the advantage, the initiative and the future.

  The blueprint is inspiring, the horn is inspiring, and the journey has no end. In the face of great responsibility and glorious mission, all party comrades must remember Do not forget your initiative mind’s mission, be modest and prudent, work hard, dare to struggle, be good at fighting, strengthen historical self-confidence, enhance historical initiative, and write a more splendid chapter for Socialism with Chinese characteristics in the new era.

China’s fourth-generation nuclear power technology leads the world in R&D and application to solve the world-class problem of safe use of nuclear energy.

  CCTV News:In recent years, China’s nuclear power technology has developed rapidly and has entered the first phalanx of nuclear power technology in the world. Recently, China Nuclear Energy Industry Association released the Blue Book of China Nuclear Energy Development Report 2024.

  According to the blue book, up to now, there are 26 nuclear power units under construction in China, with a total installed capacity of 30.3 million kilowatts, and both the number under construction and the installed capacity remain the first in the world. The independent third-generation nuclear power technology represented by "Hualong No.1" and "Guohe No.1" is being deployed in an orderly manner in China.

  At the same time, China has made breakthroughs in many technical directions of the fourth generation nuclear power technology. The world’s first fourth-generation nuclear power plant put into commercial operation — — The demonstration project of Shidaowan high-temperature gas-cooled reactor has generated more than 650 million kWh since it was put into operation in December 2023. This marks that China has reached the world leading level in the research and development and application of the fourth generation nuclear power technology, which is also a pioneering work of China leading the world in nuclear energy technology.

  Fourth Generation Nuclear High Temperature Gas Cooled Reactor: A Safer Future Energy

  What are the characteristics of the fourth generation nuclear power technology? What does "high temperature gas cooled reactor" mean? In addition to the "high temperature gas cooled reactor", what other reactor types are there in the fourth generation nuclear energy system?

  The world’s first fourth-generation nuclear power plant has an installed capacity of 200,000 kilowatts.

  Shidaowan High-temperature Gas-cooled Reactor Demonstration Project is located in Rongcheng City, Shandong Province. It is a landmark achievement of major national science and technology projects with completely independent intellectual property rights in China, and it is also the first fourth-generation nuclear power plant in the world. The installed capacity of the project is 200,000 kilowatts, and the power generation is enough to meet the electricity demand of 200,000 households.

  High temperature: The reactor core is made of high temperature resistant materials.

  High temperature gas-cooled reactor includes two key words: "high temperature" and "gas cooling". High temperature means that the core of the reactor is made of high temperature resistant materials such as graphite and ceramics, so that the core temperature can reach nearly 1000 degrees Celsius.

  Air cooling: inert gas helium is used for core cooling and heat transfer.

  Air cooling means that the reactor uses inert gas helium for core cooling and heat transfer, which is different from the "water cooling" mode of traditional nuclear power plants. Helium is not easy to react with other substances in the reactor at high temperature, so it is called high temperature gas cooled reactor.

  Zhang Zuoyi, chief designer of the high-temperature gas-cooled reactor nuclear power plant, a major national science and technology project, introduced that in 2023, this reactor was used for a very important safety verification test. After stopping the whole external output energy system, the reactor was able to "brake" itself and slowly cool down, which scientifically proved the "inherent safety" of the reactor.

Central Bank: The loan growth of the real estate industry showed a sustained recovery trend.

  BEIJING, July 14 (Xinhua) Ruan Jianhong, spokesman of the People’s Bank of China and director of the Survey and Statistics Department, said on the 14th that in the first half of the year, various loans of financial institutions increased by 15.73 trillion yuan, an increase of 2.02 trillion yuan over the same period of last year, indicating that the financial system has further increased its support for the real economy. From the perspective of industry investment, new loans were mainly invested in key areas such as manufacturing and infrastructure, and the growth of loans in the real estate industry also showed a sustained recovery trend, and the structure of the loan industry was further optimized.

  Ruan Jianhong said that from the perspective of loan subjects, loans from enterprises (institutions) were the main body of loan increment in the first half of the year. In the first half of the year, loans from enterprises and institutions increased by 12.81 trillion yuan, an increase of 1.42 trillion yuan year-on-year, accounting for 81.5% of the total credit increase. Household loans increased by 2.80 trillion yuan, an increase of 572.3 billion yuan. The main reason for the increase in household loans is the increase in personal business loans and short-term consumer loans. In the first half of the year, personal business loans increased by 2.3 trillion yuan, an increase of 759.3 billion yuan over the same period of last year; Personal short-term consumer loans increased by 300.9 billion yuan, an increase of 401.9 billion yuan.

  From the perspective of industry investment, new loans were mainly invested in key areas such as manufacturing and infrastructure, and the growth of loans in the real estate industry also showed a sustained recovery trend, and the structure of the loan industry was further optimized. Specifically:

  The growth rate of medium and long-term loans in manufacturing industry maintained a high level. At the end of June, the medium and long-term loans of manufacturing industry increased by 40.3% year-on-year, 10.7 percentage points higher than the same period of last year, and 22.3 percentage points higher than the growth rate of medium and long-term loans of all industries. In the first half of the year, loans increased by 2.15 trillion yuan, an increase of 821.9 billion yuan year-on-year. Among them, the medium and long-term loans of high-tech manufacturing industry increased by 41.5% year-on-year, 11.5 percentage points higher than the same period of the first half of the year. In the first half of the year, the medium and long-term loans for new high-tech manufacturing industries were 483.5 billion yuan, an increase of 184.7 billion yuan year-on-year.

  Look at the infrastructure industry. Medium-and long-term loans in the infrastructure industry grew rapidly. At the end of June, medium and long-term loans in infrastructure industry increased by 15.8% year-on-year, 3.3 percentage points higher than the same period of last year. In the first half of the year, it increased by 3.25 trillion yuan, an increase of 1.1 trillion yuan over the same period of last year.

  The growth rate of medium and long-term loans in the real estate industry continued to rise. At the end of June, the medium and long-term loans in the real estate industry increased by 7.1%, 0.2 and 8.5 percentage points higher than the end of last month and the same period of last year respectively, and the growth rate has been rising for 11 consecutive months. In the first half of the year, the real estate industry added 628.7 billion yuan in medium and long-term loans, an increase of 459 billion yuan year-on-year.

  Ruan Jianhong pointed out that in the next step, the People’s Bank of China will continue to give full play to the dual functions of monetary policy tools, maintain a reasonable growth of credit and a stable pace, and continue to increase support for key areas and weak links of the national economy to help the real economy to further improve.

After the attempted "rebellion", Wagner still maintained a military presence after the ultimatum period expired?

  It has been more than half a month since the "rebellion" of Wagner, a Russian private military group, and the social security and military order in Russia have already returned to normal.

  After Wagner’s "mutiny" came to an abrupt end, Russian President Vladimir Putin pronounced Wagner’s "death penalty" in a national televised speech on June 26th, saying that Wagner would no longer be allowed to continue to maintain a military presence within the jurisdiction of Russia, and only Wagner soldiers would be allowed to join the Russian regular army, disarm and return to the fields, or go to Belarus. On the same day, Prigozhin, head of Wagner, also announced that "Wagner will eventually be dissolved" before July.

  However, Wagner’s movements since then have always been foggy, and contradictory news has been released constantly, which makes people unable to understand Wagner’s real fate. What is certain is that Wagner has remained active so far. A few days ago, Putin even proposed that Wagner be led by a military figure codenamed "White Hair" and "restore the original state".

  So, what is Wagner’s current situation? Will it continue to maintain a military presence? Is it even possible to re-participate in the Russian-Ukrainian conflict?

  What is Wagner’s current situation?

  Wagner’s recent trend is very contradictory. After being sentenced to death in late June, Wagner recently turned over weapons to the Russian Ministry of Defense, while still recruiting new soldiers.

  According to a report by the Russian Tass news agency on July 12th, the Russian Defense Ministry issued a statement on the 11th, saying that the Russian army is about to complete the work of receiving Wagner Group’s weapons and equipment. According to the data disclosed by the Russian military, Wagner handed over more than 2,000 rockets, air defense systems, armored vehicles and other heavy weapons and equipment and more than 2,500 tons of various ammunition. This statement means that Wagner has lost his fighting capacity, and Prigozhin has at least fulfilled the agreement he reached with the Russian Defense Ministry in June.

  However, Wagner is unlikely to disappear in the short term. On the contrary, after entering July, Wagner still openly recruits in Russia. According to the British "Financial Times" reported on July 5, on July 4, Wagner’s recruiter made it clear that the recruitment plan would not change because of the failure of the "rebellion", and the newly recruited soldiers still signed contracts with Wagner Group and stayed in Krasnodar Krai, Russia for training. This obviously violates the ultimatum of the Russian Ministry of National Defense that Wagner soldiers must sign contracts with the Ministry of National Defense before July 1. The Financial Times analyzed that the move of recruiting new soldiers proved that Wagner will still exist for a long time and continue to participate in Russian military affairs in some form.

  The Russian online media "остооно, Media" also quoted the famous Russian host Ksenia Sobchak (ксениясоо) on July 2nd. Sobchak said that Wagner is recruiting up to six arms, including signalmen, gunners and engineers.

  In addition, Wagner posted on the social platform Telegram on July 15 to continue recruiting soldiers: "All positions in Krasnodar Krai are still empty." Wagner also promised to pay a monthly basic salary of 240,000 rubles (about 19,025 yuan), plus bonuses and insurance.

  Did any soldiers leave?

  In his speech on June 26, Putin promised to offer Wagner soldiers three choices: joining the Russian regular army, disarming and returning to the fields or going to Belarus. In short, Putin demanded that Wagner’s military presence in Russia be banned. Did Wagner soldiers really get the right to choose, and how many people chose to leave Wagner?

  According to a report by the Russian Interfax news agency on July 2, Volodin, chairman of the Russian State Duma (lower house of parliament), posted a summary of the "attempted coup" on social platforms, claiming: "Many members of Wagner have agreed to sign contracts with the Russian Ministry of Defense and join the regular army." At present, the Russian Ministry of Defense has not announced the information of Wagner’s personnel as it announced the collection of Wagner’s weapons, nor has it seen the news that Wagner’s grassroots organizations have announced their participation in the Russian regular army. According to the Russian newspaper Kommersant reported on July 13th, Putin admitted in an interview that Prigozhin still refused to accept the proposal of adapting Wagner soldiers.

  There is no evidence that Wagner soldiers are being demobilized on a large scale. Wagner’s recruitment in Russia implies that Russian officials have not implemented the goal of banning Wagner’s military presence in Russia.

  The exact news at present is that some Wagner members did go to Belarus. According to today’s Russian TV station (RT) reported on July 16th, Wagner members are training soldiers of the Belarusian army and conducting military exercises with the Belarusian army. The Ministry of Defence of Belarus also issued a statement on July 14th, stating that Wagner would assist Belarus in formulating a "road map" for military training.

  Return to the battlefield?

  According to a report by Russia’s Kommersant on July 13th, Putin revealed in an interview that he met 35 members of the Wagner organization a few days ago, which provided them with a brand-new way out: the Wagner organization was led by the person who served as the actual commander in the past 16 months and code-named "White Hair". Putin said that under this model, "nothing will change" means that Wagner will resume the organizational model before the "rebellion", that is, continue to exist in the form of private mercenaries. To this end, Putin hinted that Wagner might be granted legal status: "This is actually a legalization issue and should be handled by the State Duma and the government."

  Reuters published an article on July 14th, saying that the military figure named "White Hair" who was appointed to take over Wagner was probably Andre Troshev (андрейтрошев). Previously, the official documents of the French Ministry of Finance and the European Union used "white hair" to refer to Troshev. In its document issued in 2021, the European Union described Troshev as "the chief executive of Wagner Organization", which is different from Putin’s claim that "Wagner was actually ‘ White hair ’ Leadership ". It is reported that Troshev served as the commander of the Russian rapid reaction force all the year round. In a photo that flowed out in 2017, Troshev took a group photo with Putin and Prigozhin. Reuters pointed out that Troshev may be Wagner appointed by Putin, and he plays the role of a liaison between Wagner and Russian troops.

  The softening of Russian official position paved the way for Wagner to maintain his military presence in Russia. Public opinion believes that Wagner is likely to rebuild his military presence in the future, and at least he will go to Africa or Syria to return to his old job and be employed by the Russian military to perform overseas military tasks. Some analysts even pointed out that Russia cannot afford to lose Wagner’s force, and Putin’s statement may have laid the groundwork for Wagner’s return to the front line of the Russian-Ukrainian conflict.

  The British Broadcasting Corporation (BBC) pointed out in a recent article that Wagner had already proved that it was indispensable for the Russian army in the battle of Bachmut, which lasted for almost a whole year. In the widely circulated video of Prigozhin swearing at Russian Defense Minister shoigu and Chief of General Staff gerasimov, Prigozhin accused the Russian regular army of fleeing without fighting in the suburbs of Bachmut, causing Wagner to be attacked on three sides in the frontal battlefield. Analysts believe that the Russian army is under great pressure and needs Wagner’s return.

  Sean Bell, a military scholar, analyzed that it is unwise to "exile" Wagner to Belarus for a long time, let Wagner soldiers return to the fields or dilute them into the Russian regular army. "Russia can’t bear the consequences of losing the best and most experienced soldiers in the conflict between Russia and Ukraine", so Putin is willing to soften his posture and put forward that Wagner will "return to the original state" under the leadership of "white-haired" Troshev, which means that Wagner will return to the battlefield in Russia and Ukraine as a whole in the future.

The movie version of "I have a date with a zombie" started shooting, and Bosco Wong played Kuang Tianyou, which made people look forward to it.

According to Hong Kong media reports, the film version of the classic Hong Kong drama "I have a date with zombies" and "Ma Xiaoling the Exorcist Dragon" has officially started shooting. Wu Qianyu, Jie Cai and Ziyu Liao appeared on the set. Chen Shisan, the original screenwriter and Joey Meng Yee Man’s husband, will continue to be a screenwriter and will also serve as producer and director.

I have a Date with Zombies is a TV series planned by ATV in 1998. The plot of the drama is full of imagination, and the actors are superb in acting, which caused a ratings frenzy after broadcasting. The drama version is a series of TV dramas produced by Hongkong Asia Television, directed jointly by Zhiwei Xian and Youye Tan, and starring Yin Tianzhao, Joey Meng Yee Man and Chen Qitai.

Ma Xiaoling, played by Joey Meng Yee Man, and Kuang Tianyou, played by Yin Tianzhao, won unanimous praise from the outside world, which made them soar. After that, while the iron was hot, ATV broadcasted the second and third films in 2000 and 2004, and the reputation and ratings were also very good.

Ma Xiaoling, the exorcist dragon, said that "all those who are fighting against the soldiers are in the front to punish evil". In the first part, the relationship between Joey Meng Yee Man, Kristy Yang and Yin Tianzhao was lamentable, but my favorite is the third part. Apart from zombies, love and many funny things that happened when I traveled back to the Song Dynasty to find Kuang Tianyou’s predecessor "Arrow" and "Arrow" and returned to modern society, it was definitely not because of Joey Meng Yee Man’s black leather pants.

This time, Ma Xiaoling, who is played by Wu Qianyu as a "leg expert" and "money worshipper", still makes people feel that bosco Bosco Wong, who can be "mean" and "cool", is still very much expected to play Kuang Tianyou.

Starring in the Hong Kong media exposure film:

Wu Qianyu Ma Xiaoling (originally Joey Meng Yee Man)

Bosco Wong-Kuang Tianyou (originally Yin Tianzhao)

Jie Cai Wang Zhenzhen (originally Kristy Yang)

Lv Liangwei-Kazuo Yamamoto (original Chen Qitai)

Ziyu Liao-The Future (Original Zhang Wenci)

The reporter also met Chen Shisan, so he came forward to interview him. He said that many people have been looking for him to start filming the film version and tried their best to get the copyright, but it is not convenient to disclose too much. Ask Joey Meng Yee Man if he will make a guest appearance in this film? He still didn’t answer directly. It seems that he wants to keep the film mysterious.

The so-called classic is called classic because the characters have gone deep. I hope this film can also bring a new upsurge of nostalgia for Hong Kong. After all, in the 1970s and 1990s, the glory of Hong Kong movies left many viewers with good memories.

Editor in charge:

The more difficult it is, the more opportunities for elite sales to break.

Do you know how popular real sales experts are?

Let’s look at a data:Among the top 500 CEOs, the most are from sales, and the second most are from finance, which add up to more than 95%.

This was mentioned by the former HP global vice president in his retirement speech.

Sales, a seemingly low-threshold occupation, is related to the lifeline of enterprises.

In today’s situation, the sales war determines whether the enterprise can outperform the opponent in difficult times.

But what will the top sales elite do?

Sales is a job that tests people’s mentality. It requires a strong heart, and you may be rejected and even humiliated by customers again and again. If you can still adjust your mentality and bite the bullet and catch up, it will be really great.

Most new sales start from the most basic work, and need to call and send WeChat again and again to find target customers. It is very unpleasant to be rejected mercilessly and hung up, and most sales have to experience countless rejections a day.

You used to think that those low-threshold sales that accompany wine have no gold content, but in fact they don’t have the thick skin and the spirit of repeated defeats and wars. Most people can’t even do low-threshold sales, and it is easy to be attacked and doubt their lives.

When you finally establish contact with customers, but only remain polite and unfamiliar, then you should also be careful.

Because sales experts know that the key to door-to-door sales is to become friends with customers and become one with them. If the customer is polite to you, it means that you haven’t entered the customer’s heart. This kind of customer relationship is very fragile. Once the master salesman of the competitor sells, the customer will easily fall to the competitor.

Therefore, there is an old saying in the marketing field called:"Be friends first, then do business."

Quotations from sales experts:

The most economical and effective way to open the other person’s heart is to praise your customers. But remember: Flattering "flattery" indiscriminately and untimely will only embarrass your customers.

It’s often seen that new salespeople desperately introduce products and enterprises to customers when they meet them for the first time. I wonder if customers are not familiar with you, and it’s already a face for you not to kick you out. Will he still listen to your introduction carefully?

We should disguise ourselves as his peers or higher in front of customers! Only in this way can customers respect you and recognize you, and then they will discuss their work with you.

4 Don’t expect to get the customer right away when you visit for the first time. At most, you should throw stones to ask for directions. The main purpose is to get to know the internal situation by contacting the customer, such as who can make the decision and which relationships need to be dealt with …

The law of sales is: communicate well with the people above, and communicate poorly with the people below, and there is a 20% chance of being turned over; Communicate well with the people below, and if you don’t communicate well with the people above, there is a possibility that 80% will be turned over! Therefore, every link is guaranteed to be safe, and that is really safe.

Sales experts will definitely find out the personnel structure of the other company before winning the big order, and find out who is the recommender, the influencer and the decider.

The recommender is often the person in charge of the purchasing department or technical department of the other company, who is the best to know and buy, and he can push our list to the person who has the final say. The influencer is a person who is one level higher than the recommender and can turn a deaf ear to the finalization of cooperation.

In large-scale projects, it is of little value to just get rid of one person. If the recommender doesn’t recommend you, the decider won’t dare to decide you, because there are too many risks. If the recommender recommends you and the influencer attacks your weakness, the decider will not dare to decide you. If the recommender recommends you, the influencer has no opinion, and the decider has not been settled, the variables are also very large.

Persuade "Wang" with the help of "Wizards" (that is, technology); Persuading "scholars" depends on interests.

In other words, it is to convince people at the level of boss and boss that you are not qualified to talk about technology and money, and others will not care about you; Persuade middle-level cadres who work, you want to talk about benefits, you talk about technology, others will say yes on the surface, but in fact, they are eager for you to get out of here early.

In particular, we should remember that we should protect our related parties and references, try to pretend that we don’t know him in the office, or at least show that we are unfamiliar with him. Otherwise, customers will see that one side of the company has stood with the salesman, and the gold content of the referee’s speech will be greatly reduced.

Quotations from sales experts:

Any salesman is not facing the customer’s company, but the customer’s individual.

The premise of getting the key person is: 1) you should be good at appraisers; 2) you should be sensitive; 3) you should be able to close the distance with customers; to have this ability, you must 1) run more customers; 2) you should be good at summarizing.

3 winning small customers depends on being a man, because small customers don’t have much conflict of interest, winning big customers depends on methods and strategies, because big customers have huge interests, and human nature is worthless before interests.

Don’t imagine that you can win the contract by talking about technology with others.

A clever salesman understands that the overall goal of "signing the bill" is decomposed into eight small goals that can be achieved and have continuity:

Goal 1: collect customer information;

Goal 2: contact customers;

Goal three: let customers have a good impression on me (giving small gifts or promising benefits);

Goal four: let customers know about our products that best match their needs (repeated promotion of technical selling points);

Goal five: get the approval of the customer’s decision maker and key people (business activities);

Goal 6: Understand and meet the procurement procedures;

Goal 7: Participate in bidding;

Goal 8: Winning the bid.

Concentrate on conquering key targets at each stage, and finally sign big orders.

If you want to make a big order, you must first remember."28 rule"

Customers who do not have enough conditions to buy or always want to get low prices are called inaccurate customers, and they should be deleted as much as possible. Because they can only create 20% performance for you, but they often consume 80% of your time and energy.

Secondly, the sales idea should be changed from "I want to sell" to "customers buy with me".

Finally, make your product complicated and important.

How to complicate an extremely simple product and raise it to a high price can be based on the analysis of consumers’ buying behavior, starting from the following aspects:

① Linking products with highly complicated problems;

(2) establish the image of Smith;

③ Understand the real concerns of customers and put forward their own solutions;

④ Make the differentiation of their products more obvious.

So as to establish a high-value brand image in the hearts of customers and win high-priced orders.

Quotations from sales experts:

It’s foolish to keep repeating the wrong sales method. You should be good at summarizing why it is not accepted by customers, so that you can make progress.

Solving problems is first of all strategic, grasping the laws, then technical, and finally psychological and detailed.

The key to the mid-term sales is differentiation. Differentiation gives you a label to make you look different, attract customers’ attention and interest, which must be marked and done in the middle of the specific documentary process. Only in this way will customers pay more attention to you.

As long as you are enthusiastic about life, enthusiastic about people, know how to read and feel, make people feel good about you quietly, know the way of the world, know how to predict the development trend of things, and then work hard, then there will be a wonderful story.

Ni Jianwei, a sales god with an annual signing of 600 million yuan, is the author of the best-selling book "Notes on grabbing orders: sales is to get people".

Pacific insurance group insurance billing scheme designer, internal training lecturers of famous enterprises such as Midea, Country Garden, Xuesisi, Hewlett-Packard and Skyworth Color TV, and marketing consultants of many enterprises and institutions such as Shenzhen Smart Security Association.

He has served as the general manager of sales in several Fortune 500 companies, and has worked in Japan’s Ebara Machinery, Germany’s Siemens, and the United States’ Tuthill. Focus on key account sales for 22 years.

The lowest price of 2021 Dodge Challenger 3.6SXT starts at 500,000.

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  The 2021 Dodge Challenger adopts the latest design concept of the Dodge family, and its overall shape is more sporty. The instrument panel adopts the combination design of double instrument panels and LCD screen, and the center console adopts split type with a central LCD screen. The 2021 Dodge Challenger has a sporty atmosphere, including a bottom steering wheel, sports seats, carbon fiber-like interior parts and aluminum alloy decorative panels.

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The latest exposure of the iPhone’s big loophole: transmitting files will reveal personal privacy, and Apple has been aware of it for more than two years.

Jia Haonan came from Aofei Temple.

Quantum bit report | WeChat official account QbitAI

Kind reminders from iPhone users always make people feel warm:

So I backhand to a "thank you":

It doesn’t matter if the iPhone’s AirDrop is used up. Not only is it a trivial matter of being harassed, but hackers can also intercept personal information in a few milliseconds.

It’s basically equivalent to making your mobile phone number, email address and other contact information public.

Moreover, this bug has long been known by Apple, but it has not been fixed.

There was no time to flash, and the information was leaked.

What’s going on?

Researchers at Darmstadt University of Technology have conducted in-depth research on loopholes, and their conclusion is:

Apple AirDrop has a two-way vulnerability. No matter whether it is accepted or sent, as long as it is opened, hackers can crack the user’s mailbox, phone number and other information in a few milliseconds.

Personal information intercepted by hackers may be used for precision phishing attacks, fraud, etc. The simplest way is to resell personal information directly for profit.

AirDrop, the name that domestic users are more familiar with, is airdrop, which is transmitted through Bluetooth and wifi. Among them, Bluetooth "handshakes" and Wi-Fi "transmits".

The whole transmission process does not require the participation of public network connections.

But the problem lies in the "handshake phase" of Bluetooth.

In the transmission confirmation stage, in order to determine whether the equipment of the possible sender should be connected with other nearby equipment, AirDrop will broadcast the local Bluetooth signal, which contains the partial encrypted hash value of the sender’s phone number and email address.

If there is a hash value that matches someone’s information in the address book of the receiving device, the two devices will shake hands for mutual authentication through Wi-Fi.

Of course, if the recipient is set to receive from any device, the address book verification can be skipped.

During the handshake, the device will exchange the complete SHA-256 hash value of the owner’s phone number and email address.

Originally, the original information that generated them cannot be directly transcribed from the hash value, but it may be calculated according to the entropy or the number of random values in the plaintext.

Therefore, in theory, hackers can do this by carrying out "violent attacks", that is, throwing out a large number of test values and "bumping" out the correct information.

The key point is that in a phone number or an e-mail address, the information entropy is negligible.

Even a database containing all possible phone numbers in the world. It only takes a few milliseconds to find a hash value in it.

That’s it. It was too late to flash, and the information leaked out.

Hackers "wait for the rabbit"

In the simplest way, hackers only need to monitor the discovery requests sent by other nearby devices without any prior information.

For example, just install a Bluetooth "bug" in public places.

The second method is the reverse.

The attacker opens the sharing menu to see if there is a nearby device responding to his handshake request message.

But this technology is not as widely applicable as the first method, because it only works when the attacker’s information is already in the receiver’s address book.

However, attacks from "acquaintances" are equally terrible.

For example, the company boss can use it to get the non-work phone number or email address of any employee.

For two years, Apple turned a deaf ear.

Does Apple know?

Of course I know. Besides, I knew it two years ago.

Not only do I know, the team of Darmstadt University of Technology, which discovered the vulnerability, has also specially developed a vulnerability patch PrivateDrop, which allows both parties to shake hands with each other without exposing the hash value.

When the vulnerability was reported in 2019, the patch was submitted together.

But two years later, the stone sank into the sea.

Apple officials have never responded to whether the researchers adopted their scheme, and the loopholes have never been fixed.

Ready-made answers are too lazy to copy …

So until today, as long as there are users who use airdrop delivery, there is a risk of revealing personal information.

At present, the only way to prevent leakage is to set AirDrop to "no one" in the system settings menu.

The launch of iOS 14.5 was originally known for its security, but now it has been exposed that serious vulnerabilities have lasted for two years and affected 1.5 billion users around the world.

By the way, I would also like to remind you that not only iOS, macOS and iPadOS on the iPhone, but also all Apple devices with the function of "air drop delivery" are under threat.

Reference link

https://arstechnica.com/gadgets/2021/04/apples-airdrop-leaks-users-pii-and-theres-not-much-they-can-do-about-it/

End—

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Original title: "The latest exposure of iPhone vulnerabilities: transmitting files will reveal personal privacy, and Apple has not changed it for more than two years."

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