The entire film was shot within 19 days, and with that 13 shooting days were involved with action scenes.
Stephen Tung starred in a scene in "Enter the Dragon" with Bruce Lee. The scene was where Bruce said "Don't concentrate on my finger, or you will miss all that heavenly glory." Both directors Albert and Herbert paid tribute to this (Tung was a stuntman) by having Stephen stare at Bruce Lee's statue in a scene in Hong Kong's Tsim Sha Tsui.