Gao Qiansheng is the director of Amdo Workshop of China Railway 27th Bureau Group Railway Maintenance Engineering Co., Ltd. He has been leading the team to overcome various maintenance and rectification problems caused by frost damage of Qinghai-Tibet Railway.
The average altitude here is 4700 meters, the lowest temperature is minus 47 degrees, and there are more than 8 winds of 70 degrees per year. The section between Tanggula South Station and Liantonghe Station is the pipe section with the greatest difficulty in maintenance.