Aerial photo taken on Aug. 14, 2019 shows the Xin'anjiang River shrouded in fog in Jiande City, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

　　Aerial photo taken on Aug. 14, 2019 shows the Xin'anjiang River shrouded in fog in Jiande City, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

　　Aerial photo taken on Aug. 14, 2019 shows the Xin'anjiang River shrouded in fog in Jiande City, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

　　Aerial photo taken on Aug. 14, 2019 shows citizens running along the Xin'anjiang River in fog in Jiande City, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

　　Aerial photo taken on Aug. 14, 2019 shows the Xin'anjiang River shrouded in fog in Jiande City, east China's Zhejiang Province. (Xinhua/Weng Xinyang)