On December 20, with the completion of the laying of the last pair of tracks on the left side of the water park station to nuo wo mulle station, the first phase of the Hohhot urban mass transit line 2 project under the general contract of China railway construction group and the construction of China railway 16th bureau group was completed.

At the construction site of pazhou west section of guangzhou metro line 18, the cutter began to dig slowly, marking the first time that the fastest subway tunnel in China will cross the pearl river for a long distance. This shield tunneling machine will propel more than 1600 meters under the pearl river in an s-shaped manner, which will be the first time to challenge the long distance and small radius crossing the pearl river system in the field of underwater tunnel construction in China.

On December 10, the length of the liaohe shield tunnel tunneling through the eastern route of the china-russia natural gas pipeline (changling-yonker) exceeded 600 meters, completing one third of the overall progress.

On December 3, in the morning, wuhan metro line 8, street mouth station ~ ma fangshan station, left line No.2, shield tunneling machine cutter began to turn, marking the construction of wuhan metro line 8, the last tunnel officially began to dig. Between yaokou station and mafangshan station, it starts at the intersection of future city hotel on lousi road, extends southward along lousi road, and stops at the intersection of lousi road and hongda lane. The line is completely laid along lousi road.

On the afternoon of November 24, the right line between the guantang access section of hefei metro line 5 and the jiqiao road station area was smoothly transited.

Recently, the right line of dongle road and daliang section of foshan metro line 3 project was successfully completed, which is also the first subway tunnel to be completed in the core city of shunde district of foshan.