Aerial photo taken on Nov. 26, 2021 shows the night view of Dangjiu Village in Gandong Township of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region. More and more solar powered street lamps have been erected in areas tucked away in the mountains in Guangxi, illuminating the night sky for people living there. (Photos: Xinhua)

Aerial photo taken on Aug. 31, 2021 shows the night view of Baixiu Village in Gandong Township of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region.

Aerial photo taken on Aug. 31, 2021 shows the night view of Dangjiu Village in Gandong Township of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region.

Aerial photo taken on Aug. 25, 2021 shows the night view of Dangjiu Village in Gandong Township of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region.

Aerial photo taken on Aug. 27, 2021 shows the night view of Gandong Village in Gandong Township of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region.

Photo taken on May 20, 2021 shows the night view of Dangjiu Village in Gandong Township of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region.

Photo taken on May 14, 2021 shows the night view of Dangjiu Village in Gandong Township of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region.

Aerial photo taken on Aug. 30, 2021 shows the night view of Jindong Village in Gandong Township of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region.

Aerial photo taken on Aug. 27, 2021 shows the night view of Gandong Village and Baixiu Village in Gandong Township of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region.

Photo taken on May 11, 2021 shows the night view of Dangjiu Village in Gandong Township of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region.

Aerial photo taken on Nov. 27, 2021 shows the night view of Rongdi Village in Sirong Township of Rongshui Miao Autonomous County, south China's Guangxi Zhuang Autonomous Region.