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Fishermen cast a net to catch fish at Tianquan Lake in Xuyi County of Huai'an City, east China's Jiangsu Province, Nov. 10, 2017. (Xinhua/Zhou Haijun)

Fishermen cast a net to catch fish at Tianquan Lake in Xuyi County of Huai'an City, east China's Jiangsu Province, Nov. 10, 2017. (Xinhua/Zhou Haijun)