Introduction to Swan Lake: Rongcheng Swan Lake is the largest swan lake in northern China. The lake covers an area of 6.3 square kilometers, with an average water depth of 2 meters. The lake is home to a large number of small fish, shrimps and plankton. It is an ideal place for whooper swans to survive in winter and attracts national first- and second-class protected animals. There are hundreds of thousands of rare birds of 300 species. It was approved as a provincial tourist resort and listed as a national scenic spot and a national nature reserve. It is known as the "Oriental Swan Kingdom" by experts and scholars at home and abroad. Located in Chengshan Town, Rongcheng City.