It takes years of building that experience as a filmmaker, as well as physically. You have to have a high level understanding of martial arts.

For me, the challenge of a period film is that, unlike a contemporary film where the character can be very free-form when it comes to the acting, there's a burden to acting in a period film because you have to stay within the character's historical background and the gestures of certain periods.

I'm a very emotional guy.

My mum lives in Boston; she's famous for teaching wushu and t'ai chi. So from when I was young, my mum and aunt were like: 'You're training; you're not playing baseball or football.' Training every day was normal. Later, when I was almost a teenager, Bruce Lee became my idol.

Better to be called something positive and inspirational than something negative.

Martial art is a form of expression, an expression from your inner self to your hands and legs.

Bruce is the man. He was definitely ahead of his time.