Passenger services begin on multiple metro lines in China January 4, 2020 | Asia Pacific News Passenger services have commenced on nine metro lines in Chengdu, Chongqing, Guangzhou, Hefei, Hohhot, Jinan, Suzhou, and Tianjin. These lines collectively span around 230 km and cover over 160 statio... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password