Line 4 of the Chengdu Metro is the third line to enter revenue service on the metro network in Chengdu, Sichuan. Line 4 runs in an east-west direction, stretching from Wansheng in Wenjiang to Xihe in the Longquanyi. The first phase started construction on July 22, 2011, and began operation on 26 December 2015. Testing began on the east of west extensions of Line 4 as part of Phase II expansion on December 10, 2016.

Chengdu Tram Line 2 is a tram line in Chengdu, China. The line has a total length of 39.3 kilometres (24.4 mi) and 35 stations. It has a 'Y' layout and runs from the Chengdu West railway station to Pixian West railway station and Hongguang. The line was officially started in December 2015, and the 13.7 km (8.5 mi) demonstration section of the line was opened on 26 December 2018, and the remaining sections were opened on 27 December 2019.