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Tourists overlook Tongji weir at the Ancient Weir-Home of Painting scenic area in the Liandu District of Lishui City, east China's Zhejiang Province, Aug. 15, 2018. (Xinhua/Jin Liwang)

Tourists overlook Tongji weir at the Ancient Weir-Home of Painting scenic area in the Liandu District of Lishui City, east China's Zhejiang Province, Aug. 15, 2018. (Xinhua/Jin Liwang)