Aerial photo taken on Dec. 4, 2021 shows the scenery along Rongjiang River in Rongan County, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhang Ailin)

Aerial photo taken on Dec. 4, 2021 shows the scenery along Rongjiang River in Rongan County, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhang Ailin)

Aerial photo taken on Nov. 25, 2021 shows the scenery along Rongjiang River in Rongan County, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhang Ailin)

Aerial photo taken on Dec. 4, 2021 shows the scenery along Rongjiang River in Rongan County, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhang Ailin)

Aerial photo taken on Dec. 4, 2021 shows the scenery near Fushi hydropower station in Rongan County, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhang Ailin)

Aerial photo taken on Dec. 4, 2021 shows the scenery along Rongjiang River in Rongan County, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Zhang Ailin)