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Aerial photo taken on June 14, 2019 shows water pouring out of sluices of the Shuangpai Reservoir in Yongzhou, central China's Hunan Province. (Xinhua/He Hongfu)

Aerial photo taken on June 14, 2019 shows water pouring out of sluices of the Shuangpai Reservoir in Yongzhou, central China's Hunan Province. (Xinhua/He Hongfu)