Cheng Kai Ming was created right after Tsui Yee-Man
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
and right before Hui Pui-Fung
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
all three by williamwan, for 'Marooned'
http://hkmdb.com/db/movies/view.mhtml?i ... ay_set=eng
So maybe, he meant Cheng Kai Ming instead of Cheng Kai Mun (no big5 name!) for role of the Pawnshop boss
Marooned (2000) ... Pawnshop boss
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
IDK, just a guess.