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People choose wine during the 10th China Green Food Expo at the Nanchang Greenland International Expo Center in Nanchang, capital of east China's Jiangxi Province, Dec. 3, 2017. (Xinhua/Peng Zhaozhi)

People choose wine during the 10th China Green Food Expo at the Nanchang Greenland International Expo Center in Nanchang, capital of east China's Jiangxi Province, Dec. 3, 2017. (Xinhua/Peng Zhaozhi)