Aerial photo taken on April 7, 2022 shows the scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)

Aerial photo taken on April 7, 2022 shows the scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)

Aerial photo taken on April 7, 2022 shows the scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)

Aerial photo taken on April 7, 2022 shows the scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)

Aerial photo taken on April 7, 2022 shows the scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)

Aerial photo taken on April 7, 2022 shows the scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)

Aerial photo taken on April 7, 2022 shows the scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)

Aerial photo taken on April 7, 2022 shows the scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhou Hua)