Line 6 (Chongqing Rail Transit)

CRT Line 6 (and the branch line branded as International Expo line) is the second heavy railsubway line in Chongqing, as well as being the longest rapid transit line in China, at 85.6 km (53.19 mi) long. It opened with provisional revenue service on September 28, 2012, and connects Nan'an, Yuzhong, and Jiangbei districts in central Chongqing.

The eastern extension of line 6 convers a distance of 6.79 km, this extension starts from Liujiaping and branches off towards Chongqingdong Railway Station, with 2 stations in between. The project began on 28 March 2022. It is opened on 27 June 2025.