Introduction to Tianda Mountain: On the west side of the lake is Tianda Mountain, also known as Wan Zhang Mountain and Da'ao Nao. Because it was struck by lightning, it was named "Tian Da". There is a flat on the mountain. The side of the flat is cut several feet high, and the dangerous rocks are abrupt and named Centipede Steep. At the bottom is Longtan, which is more than 10 square meters wide, with waterfalls gushing on the top of the cliff, and the cold and heat are constant.