Maintenance workers on Xixi River Grand Bridge of the Chengdu-Guiyang railway in Southwest China's Guizhou province, Jan 19, 2021. Xixi River grand bridge of the Chengdu-Guiyang railway in Southwest China's Guizhou province spans the Xixi River canyon, with an over-250-meter elevation difference between the bridge deck and the river surface. In winter, maintenance workers have to brave the low temperature, high altitude and strong wind to ensure train traffic safety. [Photo/Xinhua]
Maintenance workers head to Xixi River Grand Bridge in Southwest China's Guizhou province, Jan 19, 2021. [Photo/Xinhua]
Maintenance workers on Xixi River Grand Bridge of the Chengdu-Guiyang railway in Southwest China's Guizhou province, Jan 19, 2021. [Photo/Xinhua]
Aerial photo taken on Jan 19, 2021 shows maintenance workers on Xixi River Grand Bridge of the Chengdu-Guiyang railway in Southwest China's Guizhou province. [Photo/Xinhua]
Aerial photo taken on Jan 19, 2021 shows maintenance workers on Xixi River Grand Bridge of the Chengdu-Guiyang railway in Southwest China's Guizhou province. [Photo/Xinhua]
