Not really...I have films with all three of them on DVD here, and I'm rather certain that they're all different people. Lui and Crystal Kwok from this century are most definitely different people...but I presently don't have the time to fish out DVDs and do screen-grabs just to justify myself, sorry.
If I get any free time over the next three days, I'll do the deed and post a pic or two for comparison...
Mind you, if Zeny Kwok and Katie Kwok (who I have since had confirmed are the same person), can be attributed as two different people, even when photographic evidence is/was supplied, what's another mistake or two on the site? It's not like Chinese people, most particularly entertainers, don't change their names to improve their luck...
NB: What you also have to take into account is the way in which "Kwok" is written per both actresses -- you'll notice they're quite different characters, with one containing the same "Kwok" character as Leslie Cheung Kwok Wing, and the other with the same character as contained in Aaron Kwok Fu Sing. Closest English comparative I can think of, off the top of my head, is the English surnames "Brooks" and "Brookes" -- though pronounced the same, they're written differently and one is seldom related to the other. Not forgetting that there have been insurmountable instances of "one-off" apprearances by actors/actresses in HK movies - one movie under their belt, then gone! We're dealing with a language that has over 200+ fixed characters as its basic alphabet, unlike English which only has 26. And HK cinema is not nearly as incestuous as some people make it out to be...
