Aerial view of Tiaozini wetland in Dongtai of Yancheng City, China's Jiangsu

An aerial drone photo taken on Oct. 29, 2024 shows a view of the Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Deng Hua)

An aerial drone photo taken on Oct. 29, 2024 shows a view of the Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Deng Hua)

An aerial drone photo taken on Oct. 29, 2024 shows elks at Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Deng Hua)

An aerial drone photo taken on Oct. 29, 2024 shows a view of the Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Deng Hua)

An aerial drone photo taken on Oct. 29, 2024 shows a view of the Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Lyu Shuai)

An aerial drone photo taken on Oct. 29, 2024 shows elks at Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Lyu Shuai)

A drone photo show birds flying over the Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province, Oct. 29, 2024. (Xinhua/Li Bo)

An aerial stitched drone photo taken on Oct. 29, 2024 shows a view of the Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Li Bo)

An aerial drone photo taken on Oct. 29, 2024 shows a view of the Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Deng Hua)

An aerial drone photo taken on Oct. 29, 2024 shows a view of the Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Deng Hua)

An aerial drone photo taken on Oct. 29, 2024 shows elks at Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Li Bo)

An aerial drone photo taken on Oct. 29, 2024 shows a view of the Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Li Bo)

An aerial drone photo taken on Oct. 29, 2024 shows elks at Tiaozini wetland in Dongtai of Yancheng City, east China's Jiangsu Province. (Xinhua/Li Bo)