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Jiang Mingtao, founder of Marathon Ginseng International Inc., shows how to dig ginseng at a ginseng farm in Marathon County, Wisconsin, the United States, in this Oct. 22, 2018 file photo. (Xinhua/Wang Ping)
Jiang Mingtao, founder of Marathon Ginseng International Inc., shows how to dig ginseng at a ginseng farm in Marathon County, Wisconsin, the United States, in this Oct. 22, 2018 file photo. (Xinhua/Wang Ping)