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Zheng Qinwen of China reacts after winning the women's singles match against Natsumi Kawaguchi of Japan at the World Tennis Tour Junior Finals, in Chengdu, southwest China's Sichuan Province, Oct. 23, 2019. (Xinhua/Liu Kun)

Zheng Qinwen of China reacts after winning the women's singles match against Natsumi Kawaguchi of Japan at the World Tennis Tour Junior Finals, in Chengdu, southwest China's Sichuan Province, Oct. 23, 2019. (Xinhua/Liu Kun)