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Farmers harvest carrots in the Saibei farming zone of Zhangjiakou, north China's Hebei Province, Sept. 14, 2017. (Xinhua/Yang Shiyao)
Farmers harvest carrots in the Saibei farming zone of Zhangjiakou, north China's Hebei Province, Sept. 14, 2017. (Xinhua/Yang Shiyao)