UAV drone used to monitor water environment in Huzhou

　　An unmanned aerial vehicle (UAV) is used to monitor the water environment of the Ditang water area in Huzhou, east China’s Zhejiang Province, July 30, 2020. (Photo by Lu Zhipeng/Guangming Picture)

　　An unmanned aerial vehicle (UAV) is used to monitor the water environment of the Ditang water area in Huzhou, east China’s Zhejiang Province, July 30, 2020. (Photo by Lu Zhipeng/Guangming Picture)

　　An unmanned aerial vehicle (UAV) is used to monitor the water environment of the Ditang water area in Huzhou, east China’s Zhejiang Province, July 30, 2020. (Photo by Lu Zhipeng/Guangming Picture)