According to the new notification (March 12th, 2021) from the Office of the Commissioner of the Ministry of Foreign Affairs of the People's Republic of China in the Hong Kong Special Administrative Region:
In view of resuming people-to-people exchanges between China and other countries in an orderly manner, starting from 15 March 2021, the Office of the Commissioner of the Ministry of Foreign Affairs of China in the HKSAR will provide the following facilitation for visa applicants who have been inoculated with COVID-19 vaccines produced in China and obtained the vaccination certificate: