Photo taken on July 31, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of China's Yangtze River this year has smoothly passed the Three Gorges Dam on Wednesday as the water-inflow rate into the reservoir has decreased to 34,000 cubic meters per second. (Xinhua/Du Huaju)

Aerial photo taken on July 31, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of China's Yangtze River this year has smoothly passed the Three Gorges Dam on Wednesday as the water-inflow rate into the reservoir has decreased to 34,000 cubic meters per second. (Xinhua/Du Huaju)

Aerial photo taken on July 31, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of China's Yangtze River this year has smoothly passed the Three Gorges Dam on Wednesday as the water-inflow rate into the reservoir has decreased to 34,000 cubic meters per second. (Xinhua/Du Huaju)

Photo taken on July 31, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of China's Yangtze River this year has smoothly passed the Three Gorges Dam on Wednesday as the water-inflow rate into the reservoir has decreased to 34,000 cubic meters per second. (Xinhua/Du Huaju)

The Three Gorges Dam opens the floodgates to discharge the floodwater on the Yangtze River in central China's Hubei Province, July 31, 2020. The third flood of China's Yangtze River this year has smoothly passed the Three Gorges Dam on Wednesday as the water-inflow rate into the reservoir has decreased to 34,000 cubic meters per second. (Xinhua/Du Huaju)

Photo taken on July 31, 2020 shows floodwater being discharged from the Three Gorges Dam in central China's Hubei Province. The third flood of China's Yangtze River this year has smoothly passed the Three Gorges Dam on Wednesday as the water-inflow rate into the reservoir has decreased to 34,000 cubic meters per second. (Xinhua/Du Huaju)