Pearl Lake Waterfall, also known as "Cook Zhuhai", covers an area of more than 40 square meters, located in the deepest part of Xichang Erdao Sea Scenic Area, named after the water sprayed by the spring eyes of the lake like pearls, and the water boiling over the lake. Legend has it that this is the rickets bathing pool created for the nine-day fairy when Huanglong lived in Erdaohai and had not yet moved to Huanglong. The water temperature of Pearl Lake is high, even in the severe winter season of snow and ice, the water temperature is around 200C. The sulfur smell around the hot spring is strong, there is a scaly ancient pine on the spring, the tree is full of warp, every summer, the crowd of a hundred miles will team up to take a bath here in order to eliminate a hundred diseases. People enter the lake, and the body will emit a special fragrance around, the reason is still to be tested.