Whilst the borders are still generally closed for foreigners wishing to come into China, the Pfizer vaccine has been added to the list as acceptable to gain entry. However, only holders of current residential visas will be accepted after vaccination.
Working visas may not be applied for foreigners if they are not already within mainland China. Shanghai has maintained this rule for a while, but other cities are now also enforcing this. Teachers who were either caught outside China when the borders closed, or are wishing to apply now for a working visa will not be able to until restrictions ease further. We will try to keep any further updates posted on here as we hear about them.