Peng Shuai of China wipes her face during the women's singles match against Samantha Stosur of Australia on the second day at the Wimbledon Tennis Championships in London, on July 3, 2018. China's Foreign Ministry is sticking to its line that it isn't aware of the controversy surrounding tennis professional Peng Shuai, who disappeared after accusing a former top official of sexually assaulting her. A ministry spokesperson said Friday that the matter was not a diplomatic question and that he was not aware of the situation. (AP Photo/Tim Ireland, File)

Chinese Foreign Ministry spokesperson Zhao Lijian responds during the daily media presser in Beijing, China, Friday, Nov. 19, 2021. China's Foreign Ministry on Friday stuck to its line that it wasn't aware of the controversy surrounding tennis professional Peng Shuai, who disappeared after accusing a former top official of sexually assaulting her. (AP Photo/Liu Zheng)

FILE - Peng Shuai, of China, returns a shot to Maria Sakkari, of Greece, during the second round of the US Open tennis championships on ug. 29, 2019, in New York. China's Foreign Ministry is sticking to its line that it isn't aware of the controversy surrounding tennis professional Peng Shuai, who disappeared after accusing a former top official of sexually assaulting her. A ministry spokesperson said Friday that the matter was not a diplomatic question and that he was not aware of the situation. (AP Photo/Michael Owens, File)

FILE - China's Peng Shuai serves to France's Caroline Garcia during their second round match of the French Open tennis tournament at the Roland Garros stadium, on May 31, 2018 in Paris. China's Foreign Ministry is sticking to its line that it isn't aware of the controversy surrounding tennis professional Peng Shuai, who disappeared after accusing a former top official of sexually assaulting her. A ministry spokesperson said Friday that the matter was not a diplomatic question and that he was not aware of the situation. (AP Photo/Michel Euler, File)

FILE - China's Peng Shuai serves to Japan's Nao Hibino during their first round singles match at the Australian Open tennis championship in Melbourne, Australia, on Jan. 21, 2020. China's Foreign Ministry is sticking to its line that it isn't aware of the controversy surrounding tennis professional Peng Shuai, who disappeared after accusing a former top official of sexually assaulting her. A ministry spokesperson said Friday that the matter was not a diplomatic question and that he was not aware of the situation. (AP Photo/Andy Brownbill, File)

Peng Shuai of China prepares to serve against Shelby Rogers of the United States during the women's singles match of the China Open tennis tournament at the Diamond Court in Beijing, on Oct. 2, 2017. China's Foreign Ministry is sticking to its line that it isn't aware of the controversy surrounding tennis professional Peng Shuai, who disappeared after accusing a former top official of sexually assaulting her. A ministry spokesperson said Friday that the matter was not a diplomatic question and that he was not aware of the situation. (AP Photo/Andy Wong, File)