Recently, excavation of the inclined shaft at the Qizishan Tunnel under Section CJLNY-SG01 of the Suzhou Changjiang Road South Extension Project officially began, marking the project's entry into the full-scale construction phase.

The Changjiang Road South Extension Project is located in Mudu Town and Yuexi Town, Wuzhong District, Suzhou, with a total length of 6.428 km, including a 6.18 km tunnel, which is currently the longest urban mountain tunnel in China. An inclined shaft is set at MLK3+230 in the middle of the tunnel; the shaft is 275 m long with a longitudinal slope of 1.27%, and is the first construction site on the entire line to enter the Qizishan mountain body.