Sounds like they’ve already priced in the massive correction coming in housing. HKG (and China) are about to see their property bubbles burst spectacularly.
Get out of them flats if you haven’t yet boys and girls, they might be repriced for what they are actually worth pretty soon. You’ll be able to then repurchase them, no mortgage, at a fraction of the previous price… but you just won’t have a need for them anymore.