Good acting, splendid splendid choreography, the characters are complex as is the story and relationsips. My only complain is the voice-over scenes--Sammo does great closeups and the actors have already expressed whatever through nonverbal facial expressions--but then Sammo has to go back to dub what they're thinking, kinda redundant. But remember, art without imperfection wouldn't be art.
Still it was a great movie (be better with a babe in it, but oh well.)