Photo taken on July 12, 2018 shows water discharging from the Three Gorges Dam, a gigantic hydropower project on the Yangtze River, in Yichang City, central China's Hubei Province. The second flood of the Yangtze River this year has formed on its upper reaches. (Xinhua/Wen Zhenxiao)

Photo taken on July 12, 2018 shows water discharging from the Three Gorges Dam, a gigantic hydropower project on the Yangtze River, in Yichang City, central China's Hubei Province. The second flood of the Yangtze River this year has formed on its upper reaches. (Xinhua/Wen Zhenxiao)

Photo taken on July 12, 2018 shows water discharging from the Three Gorges Dam, a gigantic hydropower project on the Yangtze River, in Yichang City, central China's Hubei Province. The second flood of the Yangtze River this year has formed on its upper reaches. (Xinhua/Wen Zhenxiao)

A staff takes photos of water discharging from the Three Gorges Dam, a gigantic hydropower project on the Yangtze River, in Yichang City, central China's Hubei Province, July 12, 2018. The second flood of the Yangtze River this year has formed on its upper reaches. (Xinhua/Wen Zhenxiao)