Photo taken on July 14, 2018 shows floodwater discharging from the Three Gorges Dam, a gigantic hydropower project on the Yangtze River, in Zigui County of Yichang City, central China's Hubei Province. The dam stands up to the largest flood control test this year as the flow of water reaches its peak on Saturday. (Photo: VCG)

Photo taken on July 14, 2018 shows floodwater discharging from the Three Gorges Dam, a gigantic hydropower project on the Yangtze River, in Zigui County of Yichang City, central China's Hubei Province. The dam stands up to the largest flood control test this year as the flow of water reaches its peak on Saturday. (Photo: VCG)

Photo taken on July 14, 2018 shows floodwater discharging from the Three Gorges Dam, a gigantic hydropower project on the Yangtze River, in Zigui County of Yichang City, central China's Hubei Province. The dam stands up to the largest flood control test this year as the flow of water reaches its peak on Saturday. (Photo: VCG)

Photo taken on July 14, 2018 shows floodwater discharging from the Three Gorges Dam, a gigantic hydropower project on the Yangtze River, in Zigui County of Yichang City, central China's Hubei Province. The dam stands up to the largest flood control test this year as the flow of water reaches its peak on Saturday. (Photo: VCG)

Photo taken on July 14, 2018 shows floodwater discharging from the Three Gorges Dam, a gigantic hydropower project on the Yangtze River, in Zigui County of Yichang City, central China's Hubei Province. The dam stands up to the largest flood control test this year as the flow of water reaches its peak on Saturday. (Photo: VCG)