File photo taken on Dec. 1, 2020 shows villagers walking to install a solar powered street lamp in Dangjiu Village 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. (Xinhua/Huang Xiaobang)
