Introduction to Yilong Lake: Yilong Lake has a water surface area of ​​39 square kilometers and is one of the five largest lakes in Yunnan after Dianchi Lake, Erhai Lake and Fuxian Lake. There are many dragon pools on the north shore of the lake, and there are 72 harbors in the south. The larger Jiuqu, together with the three islets in the west of the lake, will form the Jiuqu Islands.