My other half is currently in Hong Kong having flown in from KUL via SIN.
Now released from quarantine, it is a normal life in Hong Kong- all shops, bars, restaurants are busy as is the MTR.
They now have an "air bubble" between Singapore & HKG & quarantine can be waived with pre & post flight Covid testings along with other strict qualifications.
Obviously touristy type venues & hotels are very quiet as only Hong Kong residents are allowed in the country, but there are no lock downs and few restrictions to normal life.
I assume, they will carry on that way until a vaccine can be rolled out.
I assume that a "normal" domestic economy is the better option than the European lockdown model.
Europe has gone for a Virus containment strategy & most Asian countries have gone for a virus eradication strategy.
I imagine vaccine certificates will be the norm in the short/medium term, I'm sure Grant Shapps & co will think about this only after a few million doses have been handed out.