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A man checks the situation of clams in the lake in Sihong County, east China's Jiangsu Province, June 25, 2018. Plants and clams have been cultivated in the lake to help purify water in the Sihong County. (Xinhua/Xu Changliang)
A man checks the situation of clams in the lake in Sihong County, east China's Jiangsu Province, June 25, 2018. Plants and clams have been cultivated in the lake to help purify water in the Sihong County. (Xinhua/Xu Changliang)