Introduction to Tianshu Cliff: is a south-convex arc-shaped canyon between Qiulong Gorge and the service point. The cliffs on both sides are 150 meters high. It is the most majestic canyon section. There is a pool at the bottom of the canyon, which is Wolong Bay. , Wolongtan. There is a huge stone next to the pool, named Wolong Stone. Wolong Bay looks like a patio landscape due to the tight cliffs. The quartz rock layers on the canyon wall here have different lithological compositions and colors. After different weathering, they form a thick book like pages stacked on top of each other, hence the name "Tian Shu Cliff".