Aerial photo taken on Nov. 10, 2020 shows the Baisha bridge over Yongjiang River in Nanning, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Lu Boan)

Aerial photo taken on Nov. 10, 2020 shows the scenery of Yongjiang River in Nanning, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Lu Boan)

Aerial photo taken on Nov. 10, 2020 shows the scenery of Yongjiang River in Nanning, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Lu Boan)

Stitched aerial photo shows the scenery of Yongjiang River in Nanning, south China's Guangxi Zhuang Autonomous Region, on Nov. 10, 2020. (Xinhua/Lu Boan)

Aerial photo taken on Nov. 10, 2020 shows the scenery of Yongjiang River in Nanning, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Lu Boan)

Aerial photo taken on Nov. 10, 2020 shows the scenery of Yongjiang River in Nanning, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Lu Boan)

Aerial photo taken on Nov. 10, 2020 shows the scenery of Yongjiang River in Nanning, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Lu Boan)

Aerial photo taken on Nov. 10, 2020 shows the scenery of Yongjiang River in Nanning, south China's Guangxi Zhuang Autonomous Region. (Xinhua/Lu Boan)