Pelicans are seen at a fishpond in Dingwen Village of Longquan County in Haikou, capital of south China's Hainan Province, Jan. 16, 2019. (Xinhua/Yang Guanyu)

　　Pelicans are seen at a fishpond in Dingwen Village of Longquan County in Haikou, capital of south China's Hainan Province, Jan. 16, 2019. (Xinhua/Yang Guanyu)

　　Pelicans are seen at a fishpond in Dingwen Village of Longquan County in Haikou, capital of south China's Hainan Province, Jan. 16, 2019. (Xinhua/Yang Guanyu)

　　Photo taken on Jan. 16, 2019 shows a pelican at a fishpond in Dingwen Village of Longquan County in Haikou, capital of south China's Hainan Province. (Xinhua/Yang Guanyu)

　　Pelicans are seen at a fishpond in Dingwen Village of Longquan County in Haikou, capital of south China's Hainan Province, Jan. 16, 2019. (Xinhua/Yang Guanyu)

　　Photo taken on Jan. 16, 2019 shows a pelican at a fishpond in Dingwen Village of Longquan County in Haikou, capital of south China's Hainan Province. (Xinhua/Yang Guanyu)

　　Pelicans are seen at a fishpond in Dingwen Village of Longquan County in Haikou, capital of south China's Hainan Province, Jan. 16, 2019. (Xinhua/Yang Guanyu)

　　Pelicans are seen at a fishpond in Dingwen Village of Longquan County in Haikou, capital of south China's Hainan Province, Jan. 16, 2019. (Xinhua/Yang Guanyu)