Dubbing
Sync sound was not widely used in Hong Kong cinema for a long time so the voices (even on the original Mandarin track) for the film were dubbed. The voice of the Russian fighter Petrov on the original Mandarin track was dubbed by Bruce Lee, with added reverb.
This film marks one of the few times that a DVD has an alternate new commentary. Media Asia UK distributor Hong Kong Legends has released this film as a "Special Collector's Edition" and a "Platinum Edition". Bey Logan recorded two alternate commentaries for both releases. The usual process with re-releases on DVD is that the commentary is passed onto the next release. Logan decided to re-record his second commentary as he wanted to give it a new light, being an avid fan of this film. The theme song is played by Mike Remedios.
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