Sichuan anti-Mongol fortresses

Among them, five of them (including Diaoyucheng and Baidicheng) were recognized as Major Historical and Cultural Sites Protected at the National Level.

Another 14 of the fortresses were selected as major historical and cultural sites protected by Sichuan Province and Chongqing.

In 1241, Yu Jie moved the military and political center of Sichuan from Chengdu to Chongqing, which was easier to defend.

The top of the mountains were wide and flat, there was enough arable land and water, so they were self-sufficient and could be defended for a long time.

Even after the Battle of Yamen in 1279, which ended the Southern Song dynasty, two of the fortresses (Santaicheng and Lingxiaocheng) had not fallen.