Panshi Town, also known as Dashicheng and Mopan Village, is located in Shuangjiang Aiguo Village, Yunyang County, Chongqing. The new county is as high as a huge millstone, hence its name. The so-called Huayang country's capacity as a stone city refers to this. The expansion in the Song Dynasty was completed in the Ming and Qing Dynasties, making it a necessary place for military strategists. In the Qing Dynasty, Ganlu Yunyang County Records said: "Those who hold the stone city are the mainstay of Kuimen and the protection of Dongchuan. ...