View of Sanggan River National Wetland Park in north China

Aerial photo taken on July 28, 2022 shows a view of the Sanggan River National Wetland Park in Datong, north China's Shanxi Province. (Xinhua/Yang Chenguang)

Tourists take a sightseeing boat at the Sanggan River National Wetland Park in Datong, north China's Shanxi Province, July 28, 2022. (Xinhua/Yang Chenguang)

Aerial photo taken on July 28, 2022 shows a view of the Sanggan River National Wetland Park in Datong, north China's Shanxi Province. (Xinhua/Yang Chenguang)

Aerial photo taken on July 28, 2022 shows a view of the Sanggan River National Wetland Park in Datong, north China's Shanxi Province. (Xinhua/Yang Chenguang)

Aerial photo taken on July 28, 2022 shows a view of the Sanggan River National Wetland Park in Datong, north China's Shanxi Province. (Xinhua/Yang Chenguang)