Biao Yuen is the action director for Heart of Dragon (1985).
Although Sammo Hung directed and stars in the film with Ching-ying Lam, neither of the kung fu actors perform any martial arts in Heat of Dragon (1985). Golden Harvest wanted Sammo Hung to perform fight scenes in the film, but he refused because he knew “My character was mentally retarded, mentally disabled, so how can you ask me to fall down and suddenly become well again? And fight? They knew my fighting skills and wanted me to be part of the action but I thought that would have completely destroyed the tone of the film, the principles behind the film.”
The action is left to Jackie Chan and the other CID officers, Hoi Mang, Wah Yuen, Peter Chan and Corey Yuen. Even with its relative lack of action scenes, Heart of Dragon (1985) was nominated for the Best Action Choreography award at the 5th Hong Kong Film Awards in 1986. It was beaten by Chan’s Police Story (1985).
The bad guys are led by James Tien and include Dick Wei, Chung Fat, Phillip Ko and Blackie Shou Liang Ko . The film also features a small role for Ma Wu Ma as a restaurant owner, and like My Lucky Stars (1985) Sammo Hung’s real life brother makes a cameo appearance as a Policeman (who walks into Inspector Wong’s office without knocking).
The film was released in Japan on September 14, 1985.