China's Chen Meng competes against Singapore's Yu Mengyu during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Chen Meng competes against Singapore's Yu Mengyu during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Yu Mengyu competes against China's Chen Meng during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Chen Meng reacts during the table tennis women's singles semifinal against Singapore's Yu Mengyu at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Chen Meng reacts during the table tennis women's singles semifinal against Singapore's Yu Mengyu at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Yu Mengyu competes against China's Chen Meng during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)