The tunnel "Yuelong No.23" on the right side of the second phase of 14 Line from Gangbei to Xinshi Market (hereinafter referred to as "Gangxin Section") started smoothly. The length of the tunnel is about1038m, the minimum curve radius of the line is 800m, and the maximum gradient is 28‰. Earth pressure balance shield method is adopted in the construction. There are many buildings and structures that the tunnel passes through, and they have been in disrepair for many years, and the foundation form is mainly shallow foundation. The second phase of the subway 14 line runs north-south, starting from Jiahe Wanggang of 14 line in the north and reaching Guangzhou Railway Station in the south. There are 8 stations, namely Pengbian, Henan, Creative Park, Mawu, New Market, Gangbei, Lejia Road and Guangzhou Railway Station. Among them, Guangzhou Railway Station transfers to Line 2, Line 5, 1 1, and Xinshi Market Station transfers to Line 12. In other words, Guangzhou Railway Station will realize "four-line transfer" and Jiahe Wang Gang will also become "three-line transfer".