Xi is not only one of the four ancient capitals in China, but also one of the six ancient capitals in the world. Sui and Tang Dynasties all built their capitals here, and Xi 'an City Wall has a history of more than 2,000 years.
The preservation integrity of Shangqiu city wall should be the best among the ancient city walls.
Throughout the century, Shanghai, Beijing and Pingyao are of great historical research value.
Compared with the ancient city wall in the Central Plains, the ancient city wall in Dali is quite different.
Nanjing is also one of the four ancient capitals in China, and the tragic history makes the ancient city wall of Nanjing unique.
Xiangyang ancient city wall, even though its moat is the most severe, is the widest moat in China, with the narrowest point 180m and the widest point of 250m.
Blue skinny, mushrooms, readers don't comment when they come, and the boss doesn't pay me!