Workers place steel girders of bridge over existing railway in Lanzhou (6)

Photo taken on early morning of May 14, 2021 shows the construction site for placement of steel girders of a bridge, under which an existing railway line runs through, along the Zhongwei-Lanzhou passenger railway line in Lanzhou, northwest China's Gansu Province. Workers successfully placed steel girders of the bridge over an existing railway on Friday morning after two consecutive overnight sessions. The bridge is a key project to the 173-kilometer passenger railway line connecting Lanzhou and Zhongwei of neighboring Ningxia Hui Autonomous Region, with a designed operation speed of 250 kilometers per hour. (Xinhua/Chen Bin)