Longtan hydropower station opens its sluice to release water for the need of flood control in South China’s Guangxi Zhuang autonomous region, July 26, 2017. [Photo/Xinhua]

Longtan hydropower station opens its sluice to release water for the need of flood control in South China’s Guangxi Zhuang autonomous region, July 26, 2017. [Photo/Xinhua]

Longtan hydropower station opens its sluice to release water for the need of flood control in South China’s Guangxi Zhuang autonomous region, July 26, 2017. [Photo/Xinhua]

Longtan hydropower station opens its sluice to release water for the need of flood control in South China’s Guangxi Zhuang autonomous region, July 26, 2017. [Photo/Xinhua]