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A technician(R) teaches a farmer to take care of an ecological tea garden in Xingcun Village, Wuyishan City of southeast China's Fujian Province, March 20, 2019. (Xinhua/Chen Ying)

A technician(R) teaches a farmer to take care of an ecological tea garden in Xingcun Village, Wuyishan City of southeast China's Fujian Province, March 20, 2019. (Xinhua/Chen Ying)