Wangcheng Square, once the center of the old city of Chongqing, bears the memory of the old Chongqing people. During the Anti-Japanese War, Wangcheng was an air defense sentry in Chongqing. Since the Qing Dynasty, Wangcheng has been the military post and the last line of defense in Chongqing.
During War of Resistance against Japanese Aggression, Japanese planes bombed Chongqing for more than five years. As a military post and air defense post in Chongqing, Wangcheng has played an important role.