CX have cancelled a number of SYD-HKG flight these few days. And many paxes are left behind at SYD airport because CX told the paxes very last min to board the flight one day earlier.
Many paxes can’t get the PCR test in time and they also have trouble to revise their quarantine hotel booking to one day earlier.
and even for those flights that go on, CX have revised the timing as well.