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Tea maker Qiu Jianhong prepares to taste Lichuan black tea in Lichuan City, central China's Hubei Province, April 6, 2019. (Xinhua/Yang Shunpi)

Tea maker Qiu Jianhong prepares to taste Lichuan black tea in Lichuan City, central China's Hubei Province, April 6, 2019. (Xinhua/Yang Shunpi)