Trial runs begin on Zhengzhou Metro Line 2, China August 23, 2016 | Asia Pacific News Trial runs have begun on Line 2 of the Zhengzhou Metro. The north-south line spans 24.1 km from Liuzhuang to Nansihuan, covering 16 stations. It will have a 20.7-km of underground section and 3.4-km e... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password