Minxian-Guangyuan section of Lanzhou-Chongqing railway put into operation

Photo taken on Dec 25, 2016 shows the Bailongjiang Bridge (R) of Lanzhou-Chongqing railway line in Longnan, Northwest China's Gansu province. The Minxian-Guangyuan section of Lanzhou-Chongqing railway line was put into operation on Monday.[Photo/Xinhua]