Beijing says the President Xi Jinping and US President Joe Biden will hold a 'frank, deep and full' exchange of views on the strategic issue of the future of China-US relations during the upcoming virtual summit on Tuesday. When asked about the growing concern for Chinese tennis star Peng Shuai, however, the foreign ministry refuses to comment. Peng has not been heard from since accusing a powerful politician of sexual assault. IMAGES AND SOUNDBITES