The mountain is overcast in the cloudy mountains and the cliffs stand steeply. At the bottom of the west wall of the mountain, the natural cave is unfathomable and the spring springs from this hole. Usually, the thin water flows long, and during the heavy rain and water period, the spring water spews from the hole from the bottom up, spraying water like columns, and the waves roll. After the small stone pool, fell down the valley, formed a waterfall, hit the rock to the stone, sound transmission for several miles. The rock wall hanging cypress, stone gap extruded blue strips. The ancients called the scene here "Quanyong Bi", one of the eight scenic spots in Dong Agu. Today, on the southern cliff, there are still four scarlet characters written by the Ming Dynasty inspector, Youdu Yu Shi Mengyi. It has been repaired to be more beautiful and spectacular.