Originally Posted by
moondog
I don't think that Australia has been moved to the "RAT okay" list yet, but I suppose it might be worth checking the PRC embassy website there. Otherwise, PCR tests in HK are cheap and easy to arrange, but obviously not as cheap/easy as self-administered RATs.
It doesn't matter whether you come from a "RAT okay" country or not, as soon as you pass through Hong Kong, you must do a PCR if you then enter China within 7 days. This is a rule specific to Hong Kong (and Macau).