Contrary to what you might have heard about HongKong:
there is still an invisible barrier between the local Cantonese and the expats.
Many Cantonese girls will shrug you off mainly because you're from a different culture (which happens everywhere).
Many Cantonese girls will shrug you off mainly because you're from a different culture (which happens everywhere).
So whatever happens you'll get the "Asian shrug" (even in a cosmopolitan city like Hong Kong.)