Chinese actor Tony Leung broke both his arms filming fight scenes for Wong Kar-Wai's The Grandmaster after the director refused to use stunt doubles for the martial arts movie.

The Lust, Caution star portrays Bruce Lee's kung-fu tutor Ip Man in the film, and Wong admits Leung was not deterred by the injuries because the director had fully warned him about the lengths he would have to go through for the biopic, which took a gruelling three years to complete.

During a special post-screening question and answer session with Martin Scorsese in New York on Wednesday (08Jan14), Wong explained, "I spoke with Tony and said, 'I am going to make a movie about Ip Man and you're going to play this master. You have to do hand-to-hand combat sequences by yourself. There won't be a double. You have to do some serious training.' He thought about it and said 'Ok.'"

Wong also revealed that he had turned to Scorsese's 1980 boxing epic Raging Bull to pick up tips on how to best shoot the fight scenes.

He told a flattered Scorsese: "It was a very hard process to do the action in this film. In fact, when we were doing our choreography sequences, I looked at your secrets in Raging Bull, because it's one of the best action sequences made in the history of cinema."

And Wong continued to praise the revered filmmaker throughout the discussion at the Lighthouse International Theater, telling the crowd, "It's a great honour to be here with my hero, and he's very gracious to join us in light of his terrible (busy) schedule."