This is part of relies I got

6. The 10-year visa issued before the pandemic cannot be used for the moment. If you need to visit China for now, you need to apply for a visa according to the guidance in the “Notice”.

7.The current visa for F/M/Z/Q1/Q2/S1/S2 is only valid for 3 months, one entry. If you do not enter China before the visa expire date. The visa will be invalid. You'd have to re-apply following the prompt of our email response if you still need to travel to China.