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Shellfish farmers work on water in Sihong County of Suqian City, east China's Jiangsu Province, March 17, 2019. (Xinhua/Xu Changliang)

Shellfish farmers work on water in Sihong County of Suqian City, east China's Jiangsu Province, March 17, 2019. (Xinhua/Xu Changliang)