Xuzhou Metro Line 1 and Xi’an Airport Intercity Line begin operations, China September 30, 2019 | Asia Pacific News Passenger services have started on Xuzhou Metro Line 1 and Xi’an Airport Intercity Line. Xuzhou Metro Line 1 spans 21.97 km (21 km underground, 0.57 km elevated and 0.4 km at-grade) and... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password