Nina Li Chi, who played one of the twins' girlfriend, is married to action super star Jet Li.
The building with round windows seen at the beginning of the movie is known as the Jardine house, formerly the Connaught Centre, located near the bay in Hong Kong. Up until 1980, it was the tallest building in Hong Kong and Asia.
Was made as a benefit movie with the proceeds going to the Hong Kong Directors Guild.
Upon the movie's North American release, Canada-based kickboxing entrepreneurs Martin McNamara and Michael McNamara sued Miramax Film Corporation, Alliance Atlantis Communications, and Front Row Entertainment, Inc. for their continental promotion of this movie. Claiming copyright and trademark infringement, the McNamaras, who hold the copyright on the term "Twin Dragons" as the name of their martial arts academy, asserted that the movie "tarnished" their images as fighting promoters, and asked for a total of thirty-seven million dollars in damages.