The key control project of the sichuan-tibet railway from Lhasa to nyingchi section, the mirin tunnel, has been successfully completed and is expected to be completed by the end of 2020.

On April 2, shenzhen metro line 12, the "pioneer wu" shield tunnel machine from the line 12 science and technology station shield tunnel receiver well broken out of the wall. This marks the smooth connection of the right line and the first shield tunnel section of the whole line of the kohai section (science and technology museum station - east station of the ocean garden). This is also the longest shield tunnel interval in the fourth phase of shenzhen rail transit project.

On January 15, the second phase of rail transit line 2, from youjujie station to guigang station, was smoothly connected with the last blast of tunnel blasting. Since then, guiyang city rail transit line 2 phase ii project was completed.

On January 13, the 17.5-kilometer exit of the million (xiang) railway from China, Laos, kunming (Ming) to no.5 inclined shaft was successfully completed, and the tunnel tunneled 106,60 meters, breaking the 10,000-meter mark. This provides an important guarantee for accelerating the construction of the tunnel and lays a foundation for the tunneling.

At 16:00 on January 8, nanchang metro line 4, the first tunnel in the old city section of nanchang metro line 4 was completed in two directions.

The new longyao road cross-river tunnel starts from the intersection of longyao road and longwu road in the west and ends at changqing road, chengshan road, with a total length of about 3,251 meters. The construction of the section was completed on April 5, 2010, providing an effective guarantee for the transportation of the expo.