The construction site of the Chongqing rail transit line 6 branch line project (phase two) is seen in southwest China's Chongqing, June 11, 2020. The Chongqing rail transit line 6 branch line (phase two) is 14 kilometers long with 7 stations and is expected to be put into operation by the end of 2020. (Xinhua/Wang Quanchao)
