Aerial photo taken on Nov. 27, 2021 shows the winter scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region. (Photos: Xinhua/ Zhou Hua)

Aerial photo taken on Nov. 27, 2021 shows the winter scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region.

Aerial photo taken on Nov. 27, 2021 shows the winter scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region.

Aerial photo taken on Nov. 27, 2021 shows the winter scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region.

Aerial photo taken on Nov. 27, 2021 shows the winter scenery of the Huixian Wetlands in Guilin, south China's Guangxi Zhuang Autonomous Region.