Pic story of workers responsible for power grid maintenance on steep mountains

Wang Qingbo climbs a mountain during a patrol mission in northwest China's Qinghai Province, Jan. 7, 2020. Wang Qingbo and his colleagues are responsible for the inspection and repair of the main power grids of Salar Autonomous County of Xunhua, Hui Autonomous County of Hualong and the power transmission lines of Gongboxia power station in eastern Qinghai. To secure the power supply in the region, they have to patrol on the steep mountains which local people described as "razor ridge". (Xinhua/Wu Gang)