Not sure whether the green / orange zone in the airport works anymore. With many cases in HK, and lots of destinations not requiring PCR tests, there will be lots of “dirty” HK originating people mixing with those who are going to the mainland. The whole point of the previous arrangement was to keep mainland bound passengers away from risky passengers.
I mean, with a lot of CX’s mainland passengers going to / from PVG, it’s not as if the mainland passengers are entirely COVID-free now either…
Got to love the fact Hong Kong is still putting politics above everything else having just gone through what it has.