Patio introduction: The patio is located on the boulder corner at the top of the patio peak between Taixu Cave and Baidoutai. It was a place where Taoist priests in the Jin Dynasty drank water and kept healthy. This well is an oval hole slightly larger than a goose egg and about 20 cm deep. Legend has it that the water in the courtyard is endless all year round, and it has magical effects on improving eyesight during the Dragon Boat Festival every year. Therefore, every Dragon Boat Festival, people from around the area flock to drink it.