On November 13, with the shield machine breaking through the ground at the southern end of yining road station, the left line of shield tunnel between huashan road station and yining road station of hefei rail transit line 4 was successfully completed, becoming the 29th single-line tunnel of line 4.

On November 10, with a roar, the blade plate of the shield machine slowly broke through the wall, and the shield section of the left line from qingpeng road station to yipengdong second road station of hangzhou metro line 8 appeared in front of everyone, becoming the first shield tunnel across the whole line!

Recently, the bottom plate of the middle air shaft from the south of the second phase university of line 7 to the deep shaft (hereinafter referred to as "deep shaft") was poured successfully, becoming the first work site on the whole line to complete the bottom sealing of the foundation pit.

On November 2, the new construction project of yindu road tunnel across the river began to invite bids. The total investment of the project is 4.1 billion yuan, and the planning period of the project is 1461 days.

On October 29, the shield machine on the right line between chengkan road station and daqiang road station on line 4 of hefei rail transit successfully crossed the pile group of the north-south no.1 viaduct, indicating that both the left and right lines of the shield section safely crossed the pile group of the north-south no.1 viaduct.

On October 31, shield tunneling machine "qiji number" on the right line of shenzhen metro line 12 (xinan park station - tongle station) started smoothly in xinan park station, marking that the shield tunneling in this area has officially entered the construction stage!