This aerial photo taken on Feb. 2, 2023 shows the scenery of a mangrove national nature reserve in the Zhangjiang River estuary, southeast China's Fujian Province. (Xinhua/Wei Peiquan)

This photo taken on Feb. 1, 2023 with a mobile phone shows the scenery of the beach of Weitou Bay in Jinjiang, southeast China's Fujian Province. (Xinhua/Wei Peiquan)

This photo taken on Feb. 1, 2023 shows the scenery of the beach of Weitou Bay in Jinjiang, southeast China's Fujian Province. (Xinhua/Wei Peiquan)

Swans forage in the Minjiang River estuary wetland in southeast China's Fujian Province, Jan. 31, 2023. (Xinhua/Wei Peiquan)

This aerial photo taken on Jan. 31, 2023 shows the scenery of the Minjiang River estuary wetland in southeast China's Fujian Province. (Xinhua/Wei Peiquan)

Swans fly over the Minjiang River estuary wetland in southeast China's Fujian Province, Jan. 31, 2023. (Xinhua/Wei Peiquan)