Introduction to Yujing Cave: Yujing Cave on the upper level of Chicheng Mountain is a natural cave with a depth of 10 meters and a width of 7 meters. Inside the cave, a three-bay building is built along the rock. There are pines and cypresses planted around it, ancient wells are drilled, and the word "Yu Jing" is engraved on the rock. Yujing Cave is the sixth cave among the ten Taoist caves in the Southern Song Dynasty. It is commonly known as Shangyan (Chicheng Mountain is divided into three levels from bottom to top). It is said that it is the place where Xuandu, the emperor of the Yuan Dynasty, preached his sermons.