Located in Yancheng City, east China's Jiangsu Province, Migratory Bird Sanctuaries along the Coast of the Yellow Sea-Bohai Gulf of China were added to the UNESCO World Heritage List in July, 2019. Now various winter migratory birds, such as grey herons, slaty-backed gulls, broad-billed sandpipers, Kentish plovers and dunlins, are enjoying the natural site before flying south. Photos: Li Hao/GT