Magic Crystal cast list, Chan Keung???

[Michael Kistner]

Someone updated the cast list of "Magic Crystal":

http://hkmdb.com/db/movies/view.mhtml?i ... ay_set=eng

My VCD has no cast list.
Now I'm asking me why the actor Chan Keung (2) is added with role name to the cast list (and a few other names like Ma Tai). The editor know that actor(s)? I want to make a ID of Chan Keung a long time because I think that (or/and Chan Ming-Wai) could be the name of that unknown actor/stuntman:

http://hkmdb.com/db/movies/image_detail ... ay_set=eng

I hope the editor who did the updates can answer me. Thanks.