Chinese crested terns are seen at the Minjiangkou Wetland in Fuzhou, capital of southeast China's Fujian Province, May 21, 2019. The Minjiangkou Wetland, covering an area of 2,100 hectares, is a rest place and habitat for more than 150 species of water fowls for its ascendant location and fine environment. (Xinhua/Mei Yongcun)