Aerial photo taken on July 27, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of the year in the Yangtze River occurred in its upper reaches as the Three Gorges reservoir saw an inflow of 50,000 cubic meters per second at 2 p.m. Sunday. (Photo by Wang Gang/Xinhua)

Aerial photo taken on July 27, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of the year in the Yangtze River occurred in its upper reaches as the Three Gorges reservoir saw an inflow of 50,000 cubic meters per second at 2 p.m. Sunday. (Photo by Wang Gang/Xinhua)

Photo taken on July 27, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of the year in the Yangtze River occurred in its upper reaches as the Three Gorges reservoir saw an inflow of 50,000 cubic meters per second at 2 p.m. Sunday. (Photo by Zheng Jiayu/Xinhua)

Photo taken on July 27, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of the year in the Yangtze River occurred in its upper reaches as the Three Gorges reservoir saw an inflow of 50,000 cubic meters per second at 2 p.m. Sunday. (Photo by Zheng Jiayu/Xinhua)

Aerial photo taken on July 27, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of the year in the Yangtze River occurred in its upper reaches as the Three Gorges reservoir saw an inflow of 50,000 cubic meters per second at 2 p.m. Sunday. (Photo by Wang Gang/Xinhua)

Aerial photo taken on July 27, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of the year in the Yangtze River occurred in its upper reaches as the Three Gorges reservoir saw an inflow of 50,000 cubic meters per second at 2 p.m. Sunday. (Photo by Zheng Jiayu/Xinhua)

Aerial photo taken on July 27, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of the year in the Yangtze River occurred in its upper reaches as the Three Gorges reservoir saw an inflow of 50,000 cubic meters per second at 2 p.m. Sunday. (Photo by Zheng Jiayu/Xinhua)