Jiankang City and Nanjing City Wall in Southern Song Dynasty

1 129, once visited Jinling, and changed jiangning house to "Jiankang House", saying that he would lead the resistance against Jin and restore the rivers and mountains in the Northern Song Dynasty.

1135 ~1162, Jiankang City was rebuilt four times. The layout of Jiankang City is to change Miyagi in Nantang into a palace, and the Hongqiao in front of the palace was renamed Tianjin Bridge (now the Inner Bridge). Most of the east, north and west sides of the palace are military camps, and the government offices and schools are mainly in the southeast of the palace. Today's Confucius Temple is a health official school established in the Song Dynasty. Commercial and residential areas are concentrated on the banks of Qinhuai River in the south and southwest of the palace.

The wall of Jiankang Fucheng in Southern Song Dynasty inherited the former sites of Wu Yang and Nantang, and its perimeter, shape and scope were almost the same. Its outline: the circumference of the city wall is 25 miles, with 44 steps, which is about 14020 meters today. There are female walls and battlements at the top of the city wall. Its northern boundary is located in the south line of Zhujiang Road and Guangzhou Road, its northern trench is the lower line of Beimen Bridge, its eastern boundary is located in the west line of Longpan Road, and its eastern trench is the lower line of Jin Xuan Bridge. The south boundary and the west boundary are roughly the line from Yuhuamen, Zhonghua Gate to Shuiximen and Hanzhong Gate, and the north of Hanzhong Gate turns to the northeast and connects with Beiyuan. Today, Liang Qingshan and Stone Town are outside the city, while Wulongtan was a moat at that time.

The whole city wall is an irregular square slightly longer from north to south and slightly shorter from east to west. In addition to the Wulongtan section in the northwest corner, the wall in the southwest corner of the city, the wall in Zhazhaimen section and the wall in the north section of Daximen are also damaged, and there is a rich building leaning outside the city in the south corner. The width and height of the city wall are recorded in Ding Jing Jiankang Zhi and Zheng Jinling Zhi Xin Zhi. The upper end is 20 feet wide (about 7.75 meters today), the lower end is 30 feet wide (about 10.885 meters today) and 20 feet high (about 7.75 meters today). Outside the city wall and inside the moat, there is a low sheep and horse wall, which is four feet and one foot wide (about 12.75 meters today).