Covering an area of nearly 600,000 hectares,the Liaohe River Delta Marshland includes Panjin and Yingkou cities in Liaoning Province,where me Shuangtai Hekou Nature Reserve has been set up. This is a key habitat and a way station for migratory birds on their East Asia-Australia route. The endless stretch of its unique "red Carpet." the world's second-largest reed marshes,and the wide variety of rare animals and birds,such as red-crowned cranes,black-beaked gulls and sounders' gulls, and spotted and common seals are parts of a richly colorful wetland ecosystem.