Introduction to Qianren Cave: Qianren Cave is vast and deep, with winding paths, alternating light and dark, and a wide area. It is a good place to escape the heat in summer. Hu Mei, a poet of the Yuan Dynasty, wrote a poem about "a natural cave that attracts thousands of people". Hongzhi was the champion of the Ming Dynasty. Fengxi, a Hanlin scholar, inscribed the description "There is a cave that can accommodate a thousand people" in Hefeng's travel notes, so it is named Qianren Cave. Due to the natural barrier in front of the cave, it was used as a solid fortress for military defense in ancient times. It has the reputation of "one man can guard the gate, and ten thousand men cannot open it".