Construction begins on Shanghai Metro Line 18 Phase II, China September 9, 2021 | Asia Pacific News Construction has begun on Shanghai Metro Line 18 Phase II. Phase II will span 8.1 km from Changjiang Road S. (also on Line 3) to Dakang Road, covering six underground stations in Baoshan Distri... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password