One of those movies which are a bit complicated. There are brutal martial arts here. But the movie as such is about anger, even fury, and controlling it. A young guy learns the pacifist version of tai chi and delivers parcels to feed his monkey (so a bit of cash but not a millionaire). Then he learns that the temple where he practices is going to be pulled down. He instantly needs a lot of cash to save the place. Then a man from a security guard agency offers to pay him big cash for breaking some bones in his free time...
The young tai chi guy discovers that the additional job is changing the way the acts in everyday life.
Yes, Keanu Reeves plays the bad guy here.