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Farmers film mulch on field in Jiefang Village of Shangri-La City in Deqen Tibetan Autonomous Prefecture, northwest Yunnan Province, March 11, 2020. (Xinhua/Hu Chao) 
A farmer works in the field in Jiefang Village of Shangri-La City in Deqen Tibetan Autonomous Prefecture, northwest Yunnan Province, March 11, 2020. (Xinhua/Hu Chao)
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