As a Chinese national there are no requirements to take any vaccines, Pfizer or Sinovac.
However, there is a curious hole in Macau's entry rules for Hong Kong permanent residents. Foreign nationals with HK permanent ID cards can enter Macau as a Hong Kong resident as opposed to a foreign national. As far as I know this hole does not extend to foreign nationals who hold Chinese permanent resident cards.
I wouldn't call it a curious hole. HKPR could always travel to Macau with just the HKID card. Mainlanders could never travel with just their ID cards. They have to apply for a HK/Macau travel permit. I am not sure if a foreigner can apply for that permit as you can only apply wherever your Hukou is.
I'd go to China just so I wouldn't have to wear a mask all the time!