Introduction to city towers and walls: The first city is completely copied from the shape of the old Beijing city in the Ming and Qing Dynasties. The city is 800 meters long from north to south, 1170 meters wide for the outer city, 960 meters wide for the inner city, and 5000 meters long for the city wall. . There is a saying of "nine inside and seven outside", that is, there are 9 towers in the inner city and 7 towers in the outer city. Including the four corner towers of the inner and outer city and the two arrow towers of Yongding Gate and Zhengyang Gate, there are a total of 22 towers with a total construction area of ​​103,846 square meters. Inside the city walls are hotel rooms and conference rooms.