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

This actor play the Grand Tutor which is a signifcant role. Movie & HKFA don't have any credit.

However, I think he is Tin Sam / (??) http://hkmdb.com/db/people/view.mhtml?i ... y_set=big5

Can anyone confirm and update?

definitely - updated