Introduction to tree bouldering: On the bank of the Wanyang River about 2 kilometers down from the Zhulian Waterfall, there is a vigorous ancient chestnut tree lying vertically. The main trunk of the tree is 2.1 meters in diameter and 19 meters high. Its roots are twin trees with round trunks. , reaching straight into the blue sky, so the locals call it "the dragon mother gives birth to twins". The roots of the tree are mostly exposed due to being washed by the stream, and the roots are intertwined like a giant python. It covers an area of more than 100 meters square. Its main root tightly hugs a huge boulder, so it is also called "tree boulder". There are two Duying trees growing on the left and right sides of this tree. The trunks are thick and straight. They are in pairs and the roots are connected, like a harmonious big family.