Line S7 of the Nanjing Metro is a north–south suburban rapid transit line primarily serving Nanjing's Lishui District, running from Konggangxinchengjiangning to Wuxiangshan, and was opened on 26 May 2018. The line is served by 4 car Class B trains with a maximum speed of 100 km/h (62 mph). The line is designed to allow for 6 cars trains to accommodate long term growth.