On October 11, China railway "endeavour no. 3" shield tunneling machine at the left line of kengsha fengjing, which means that the third shield in the pingshan section of shenzhen rail transit line 14 started smoothly, and the shield construction in the pingshan section of subway construction took another big step forward!

On the morning of October 8, as the cutter of shield machine broke through the last barrier, the left line of shield section of hefei rail transit line 5 qimen road station to tongcheng south road station was successfully completed, becoming the 41st single-line section tunnel of line 5.

14 PM, September 25, shaoxing rail transit line 1 erhuan north road station 18 meters underground, with the "yueju 2" shield machine "coming out", fenglin road station - erhuan north road station left line shield section successfully completed. Earlier, the shield tunnel on the right line was completed ahead of schedule on Sept. 9, marking the first double-track tunnel in shaoxing rail transit line 1.

On September 19, as the new cutter plate of shield machine started to turn, the shield machine "qianjin" on the right line of the east section of guiyang rail transit line 3 was successfully started, which indicated that shield construction was officially adopted in guiyang rail transit construction.

On September 17, the rectangular shield machine "yangming" successfully passed through zhenhai old town and broke through the earth at zhaibaoshan station, which marked the completion of the 2.2 km long rectangular shield section of the second phase of ningbo metro line 2. The second phase of line 2 has become the longest line of ningbo rail transit under construction with rectangular shield technology.

Beijing metro line 7 east extension and batong line south extension passed the project acceptance on September 8, and qualified for no-load trial operation.