Introduction to water birds: Throughout the year, the lake area is home to tens of thousands of bearded gulls, geese, ducks, great reed warblers, and gray starlings. The symbiosis of people and birds in the lake adds a bit of poetry and painting. Surrounded by forests, clear water and blue sky, it is quiet and quiet. It has become the only national nature reserve of intact inland freshwater wetland type in the North China Plain.