Philip Kwok Chun-Fung Incorrect Birthdate

For a while I have suspected that the birthdate we have for Philip Kwok ( http://hkmdb.com/db/people/view.mhtml?id=7413&display_set=eng ) is incorrect, and it's been bothering me for longer than I'd like to admit. However, I didn't want to bring it up until I could find a primary source for what I believed to be his actual birthdate. I've finally found one here ( http://poisonclanrockstheworld.blogspot.com/1995/10/interview-with-philip-kwok.html ) in this interview that was conducted by Toby Russell.
For ease of access, here's a screenshot of the transcript at the part of the interview concerning his birthdate.

I don't think the source for an actor's birthdate could be more primary than it coming from their own mouth. I'm hoping we can finally change his birth year from '45 to '51.
For ease of access, here's a screenshot of the transcript at the part of the interview concerning his birthdate.

I don't think the source for an actor's birthdate could be more primary than it coming from their own mouth. I'm hoping we can finally change his birth year from '45 to '51.