Introduction to free-range geese: Gaoyou Lake has a wide water area and good water quality, which provides a unique ecological environment for the growth of various fish, birds and aquatic plants. It is rich in green, white, black, bream, carp, eel and other fish , is especially famous for its green river shrimp, whitebait, and crab; aquatic plants include gorgon, water chestnut, lotus root, water shield, etc.; water birds on the lake include gulls, herons, cranes, and wild ducks that often hang out in the reed ponds.