The Forbidden Kingdom (功夫之王) is a forthcoming martial arts adventure film which is the first film collaboration between martial arts veterans Jackie Chan and Jet Li, with action choreography by Yuen Woo-ping. Filming was completed on August 24, 2007 and it went into post-production on September 29. As of April 2007 the film is officially titled The Forbidden Kingdom, before it had been often referred to as The J & J Project. Director Rob Minkoff (who previously helmed such films as The Lion King and the Stuart Little films) will be behind the camera while Yuen Woo Ping will handle the fight choreography. Film studios Lionsgate and The Weinstein Company, will share distributing duties.

Zhang Ziyi was originally touted to play the role of the White Haired Demoness, played in the film by Li Bingbing.

This film is loosely based on Wu Cheng'en's Journey to the West story.

As of May 2007, Jackie Chan and Jet Li have performed their first fight in the filming process. Chan stated in Chinese the fight, choreographed by Yuen Woo-Ping, went "very smoothly." Chan also stated about the easiness and satisfaction of the fight with Li: "I have not worked with someone whom I’m comfortable with, in terms of movements, rhythm and natural reactions, in the last 10 years. I have done many fight scenes with others but there were usually more than 10 takes, which is a waste of time as the person may forget his moves and unnecessary injuries. When I fought with Li, our actions were quick. We also didn’t have to do the same stunt over 20 times, just four times,” Chan explained.

Collin Chou is to star as the Jade Emperor.

Jackie Chan is working with master fight choreographer Yuen Woo-Ping, who directed him in Jackie's breakthrough film Drunken Master in 1978, for the first time in 20 years. “I’m the action director for most of my movies. But this time I decided not to do that. I want to be fair and not impose my own fighting styles in this movie because he (Li) is in it. It’s better to have Yuen Woo-Ping as our choreographer as he is familiar with both of us,” Chan said during an interview held at a hotel in Hengdian, China, recently.

Jet Li collaborated with screenwriter John Fusco on the story. "The screenwriter is a good friend of mine and we have been sparring partners for the past three years. I was among the first to get hold of the story and later we were joined by Jackie and others. The screenwriter and I discussed how to turn the story into a fantasy and dream-like film. He is a superb screenwriter and has been learning Chinese martial arts for more than 10 years. He has roughly put across in the film some of my basic understanding of martial arts and principles of Buddhism."