First, Donnie Yen interpretation here is even better than Yip Man movies.
Second, the characterization of his character is pretty well executed and developed. He remembered me in some ways a Chinese version of Tony Montana in Scarface.
Don't get me wrong Al Pacino's interpretation is two steps over Donnie's one, also the movie, but Chasing the Dragon is the best Chinese movie I've watched in a long time.
So, overall this is great Chinese drug-thriller to enjoy during this long days.