Bernard Herrmann = 5th ruffian.
Immediately after Meng Lo dies, and Feng Lu fights (3 of) the ruffians for the first time, did I hear the orchestral buildup from the Taxi Driver theme?! If not it's a pretty good rip off.
My copy's on VHS or I'd give the exact time it plays... it's around the last 1/4 of the movie.