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Cultivators Yu Gang (L) and Liu Li check crabs on the Hongze Lake in Xuyi County of Huai'an City, east China's Jiangsu Province, Nov. 14, 2017. (Xinhua/Zhou Haijun)

Cultivators Yu Gang (L) and Liu Li check crabs on the Hongze Lake in Xuyi County of Huai'an City, east China's Jiangsu Province, Nov. 14, 2017. (Xinhua/Zhou Haijun)