Main body of arch bridge of Dali-Ruili railway to be completed

An engineer works at the construction site of the arch bridge of Dali-Ruili railway over Nujiang River in southwest China's Yunnan Province, Dec. 29, 2019. The main body of the bridge will be completed on Dec. 30. The bridge is currently the longest-spanning railway arch bridge with a single span of 490 meters. (Xinhua/Yang Zongyou)