Originally Posted by williamluk

Really? So what do you expect from the airline staff? To test you again at the gate? Their job is to make sure you have a valid negative test certificate for the destination you are flying to. Hong Kong is just doing its own silly thing which make no sense at all (if a flight is found to have three or more passengers who test positive for Covid-19 upon arrival, the airline will be banned from operating that route into Hong Kong for 7 days which used to be 14. It has nothing to do with whether the airline thoroughly verify the test cert at all). For your info, SQ is not the only airline that got banned, pretty much every single airline that fly to HK got banned at one time or the other. Go figure!