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.

Today, with the "pioneer" shield machine cutting through piles, it marks the smooth opening of the shield tunnel from xianglong station to xingsha station in line 3 of changsha metro line 14, and it also declares that all the tunnels in the xingsha area of line 3 of changsha metro line are through. It is reported that this is the first time for zeng to run a medium-high speed railway tunnel in China.

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.

On the morning of September 9, the first shield tunneling machine "yuezhou 1" of shaoxing rail transit line 1 project was successfully received at the second ring road north station, which was completed one month ahead of the original plan.