Chengdu Metro
There are currently of subway lines under construction in Chengdu in 2020. There are 12 operating subway lines of totaling and 1 tram line (Line T2) of and expected to serve over 8 million trips per day. On Dec 18th, 2020, Chengdu Metro officially opened Line 6, 8, 9, 17, 18, making this system the 4th largest in the world.