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Vinegar stored in vats in the open air is seen at a traditional vinegar factory in Chishui, southwest China's Guizhou Province, Dec. 23, 2017. (Xinhua/Wang Changyu)
Vinegar stored in vats in the open air is seen at a traditional vinegar factory in Chishui, southwest China's Guizhou Province, Dec. 23, 2017. (Xinhua/Wang Changyu)