Somebody destroyed the old episode cast order, but I switched it back.
http://hkmdb.com/db/movies/view.mhtml?i ... ay_set=eng
I can't understand why somebody changed it since it was a huge task to
arrange the cast kind of order of appearance due to episodes

Thus I found:
1) Mr. Mak is actor Tse Hon-San
http://hkmdb.com/db/people/images.mhtml ... ay_set=eng
2) Now (don't know why and who did) there are 2 actors billed as Doctor Chau (I leave that undone as a proof)
3) Could the billed Go Fung (2) be that one (Cameo: Doctor searches Yu)
since the short episode has very few "prominent" roles
http://hkmdb.com/db/movies/image_detail ... ay_set=eng