Hold on to Helan Mountain without stopping work on New Year’s Day.

The branch line of Baoyin high-speed railway Yinba (Yinchuan to Bayanhaote) is an important part of the Jinglan passage of China’s "eight vertical and eight horizontal" railway network, and its Helanshan tunnel is the first single-track tunnel for passenger dedicated lines with a design speed of 200 kilometers per hour. Because it passes through Helan Mountain and the Ming Great Wall, it is necessary to protect the ecological environment and ensure the safety of cultural relics during the construction of Helan Mountain Tunnel. On New Year’s Day holiday, more than 400 railway builders of China Railway 15th Bureau fought for the front line of Helanshan Tunnel construction, racing against time to seize the construction period.