Vaccine struggle; PRC sanctions former Trump officials; Jack Ma reappears; Xinjiang

Just minutes after Joe Biden became the 46th US President, the Chinese government announced sanctions on former US officials (English, Chinese):

Over the past few years, some anti-China politicians in the United States, out of their selfish political interests and prejudice and hatred against China and showing no regard for the interests of the Chinese and American people, have planned, promoted and executed a series of crazy moves which have gravely interfered in China's internal affairs, undermined China's interests, offended the Chinese people, and seriously disrupted China-U.S. relations. The Chinese government is firmly resolved to defend China's national sovereignty, security and development interests. China has decided to sanction 28 persons who have seriously violated China's sovereignty and who have been mainly responsible for such U.S. moves on China-related issues. They include Michael R. Pompeo, Peter K. Navarro, Robert C. O'Brien, David R. Stilwell, Matthew Pottinger, Alex…