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Chen Xingtong of China serves during the women's singles quarterfinal against her compatriot Wang Manyu at the 2019 ITTF World Tour Grand Finals in Zhengzhou, central China's Henan Province, Dec. 13, 2019. (Xinhua/Li Jianan)

Chen Xingtong of China serves during the women's singles quarterfinal against her compatriot Wang Manyu at the 2019 ITTF World Tour Grand Finals in Zhengzhou, central China's Henan Province, Dec. 13, 2019. (Xinhua/Li Jianan)