Urban railway Line S1 is the first north-south commuter railway of Taizhou connecting Jiaojiang, Luqiao, and Wenling. Yesterday, Working Area 3 of Line S1, whose construction was contracted by China Railway No. 9 Group Co., Ltd. and covered the scope of Taizhouzhongxin Station, Kaifadadao Station, and Yintaicheng Station, announced good news again -- the right-line shield tunnel between Kaifadadao Station and Yintaicheng Station in the area was successfully holed through, marking the completion of the right line of shield tunnel with the smallest radius curve in Line S1 Project.