Introduction to Yangdongtan Waterfall: Yangdongtan Waterfall is the largest waterfall in the channel. It is mainly divided into two levels: the first level is a natural waterfall, 20 meters high and 3 meters wide; the second level is an artificial waterfall, which is In the 1970s, a 13.5-meter-high Yangdongtan hydropower station dam was built at the entrance above the first-level waterfall. Below the waterfall is the unfathomable Jiulong Pool of more than 2,000 square meters.