Zhengyixian

Zhengyixian (Baiyu: 正义线) is a Xiongjing metrol ine that runs from Muzhang in the east to Beishuan in the west through Zhengyi Island. At 38.81 km with 27 stations, the line is fully underground and the only metro line to cross the Xiongjing Lake. The line is coloured brown on official maps.

A 1999 study proposed a semi-express metro line through the city. The alignment, finalised in 2007, was originally a proposal to connect the Shaoxiangxian and Entianxian. The line, built at a cost of 23 billion Yuan, saw the most impressive engineering feats including the tunneling of the lines deep underneath the lakes. The line was fully completed in 2019.