Grand bridge of Guiyang-Nanning high-speed railway under construction

Photo taken on April 20, 2021 shows workers carry out construction on the grand bridge of Guiyang-Nanning high-speed railway in Dushan County, southwest China's Guizhou Province. Guiyang-Nanning high-speed railway is designed with a maximum speed of 350 km per hour. (Xinhua/Liu Xu)