The marshland is a paradise for bird lovers! It is one of the largest and most important wetlands in the world, hosting hundreds of species of birds, including some rare and endangered ones. Among them is the marsh grassbird, a shy and elusive warbler that sings a rattling song in spring. This bird is only found in East Asia and is threatened by habitat loss. The marshland is also a vital stopover for migratory birds that fly thousands of kilometers from the Arctic to Southeast Asia. They rest and feed in the freshwater ponds and reeds that cover the area. The Chinese government has protected this amazing ecosystem and its feathered inhabitants. You can also see a captive flock of red-crowned cranes, the symbol of longevity and happiness in China. The marshland is a RAMSAR site, meaning it is recognized as a wetland of international importance.