On January 9, it was learned that, with the steady tunneling of "qianjin" shield tunneling machine, guiyang line 3 civil engineering project department of 14th bid successfully completed the construction task of running down the guiyang-guangzhou high-speed railway, declaring the first shield tunneling machine in guizhou province to successfully run down the guiyang-guangzhou high-speed railway.

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.

Recently, "hongrun 22" shield tunneling machine broke through the shield well at chencun north railway station, marking the smooth completion of the left line tunnel between guangzhou south railway station and chencun north railway station in the west extension of guangzhou metro line 7. On December 19, 2019, "hongrun 23" had successfully completed the construction of the right-line tunnel. Since then, the tunnel between guangzhou south railway station and chencun north railway station in the west extension of line 7 has been connected by two lines.

Recently, the construction of hefei rail transit line 4 has made new progress. On December 24, the left line of fenglehe road station and yulan avenue station was connected, which became the 36th single-line tunnel of line 4. On December 30, the double-line shield tunneling machine from science avenue station to qimen road station passed through hewu railway and hefu high-speed railway.