Aerial photo taken on July 8, 2020 shows water being discharged from the Xiaolangdi Reservoir on the Yellow River in central China's Henan Province. (Xinhua/Li An)

Aerial photo taken on July 8, 2020 shows water being discharged from the Xiaolangdi Reservoir on the Yellow River in central China's Henan Province. (Xinhua/Li An)

Aerial photo taken on July 8, 2020 shows water being discharged from the Xiaolangdi Reservoir on the Yellow River in central China's Henan Province. (Xinhua/Li An)

Aerial photo taken on July 8, 2020 shows water being discharged from the Xiaolangdi Reservoir on the Yellow River in central China's Henan Province. (Xinhua/Li An)

Aerial photo taken on July 8, 2020 shows water being discharged from the Xiaolangdi Reservoir on the Yellow River in central China's Henan Province. (Xinhua/Li An)

Aerial photo taken on July 8, 2020 shows water being discharged from the Xiaolangdi Reservoir on the Yellow River in central China's Henan Province. (Xinhua/Li An)

Aerial photo taken on July 8, 2020 shows workers cleaning up a mud-covered area in Jishou City, central China's Hunan Province. Heavy rainfall hit Jishou City of Xiangxi Tujia and Miao Autonomous Prefecture on Wednesday. (Xinhua/Chen Zhenhai)