Gansu Gaotai: Black River Wetland Spring Tide – Swans Flying
During the Qingming Festival, in the highland section of Zhangye Black River Wetland National Nature Reserve in Gansu Province, a large number of swans, Tibetan grubfowl, Andaman ruddy ducks, and cormorants danced and rested alternately, foraging in this vibrant spring tide scene of the Gobi wetland. (Zheng Yao de's photo)