Family Q visa expired

I’m a South African citizen working in Kazakhstan and live in Guangzhou with my wife and 2 daughters. My wife and kids are Chinese citizens and I use a family visa to enter/exit China to come to work in Kazakhstan.

Due to COVID-19 and travel restrictions to China in place since 28 March I have been stuck in Kazakhstan for a very long time.

My family visa now expired on 5June and I am trying to find out if I can apply for a new visa to go home to my family in Guangzhou, and when will the borders open for foreigners to enter China again?