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A staff member picks tomatoes in a greenhouse at Huai'an Village of Zunyi City, southwest China's Guizhou Province, Dec. 7, 2017. (Xinhua/Luo Xinghan)
A staff member picks tomatoes in a greenhouse at Huai'an Village of Zunyi City, southwest China's Guizhou Province, Dec. 7, 2017. (Xinhua/Luo Xinghan)