As an ancient civilization, China has a long history of building city walls. After thousands of years of wind and rain, the walls built by successive dynasties are still preserved everywhere. However, due to various reasons, the walls of various places have been demolished. The most famous is the city wall of Beijing, which, after extensive demolition, now retains only a few relics such as the Deshengmen Arrow Tower, the Zhengyang Gate City Tower and the Arrow Tower.
After the Sui Emperor Yang Jian established the Sui Dynasty, he initially lived in the Han Chang'an City, but the Han Chang'an City at that time was dilapidated and narrow, and the water pollution was serious, so he decided to build another new city on the southern slope of Longshouyuan in the southeast direction, which is now Xi'an City.
In the Qing Dynasty and its previous dynasties and generations, military operations were mainly based on cold weapons, and the city walls played an extremely important defensive function, so the dynasties and generations not only did not dismantle the city walls, but would make the maintenance of the city walls an important duty of local military and political governors.
After the founding of the People's Republic of China, there were two views in society, one of which was that the Xi'an City Wall should be removed, because the society was already stable and did not need the protective measures of the city wall, in addition, the city wall was still a symbol of the feudal fortress and should be broken. One view is that it should not be ripped off, which is the wealth left by history to future generations.