- Breakaway Pop Hit: "Sky High" by Jigsaw went to No. #3 on the USA Billboard Hot 100 Chart, No. #9 on the UK Singles Chart and No. #2 on the New Zealand Charts. In 1976 in Japan peaked at No. #2 on the Oricon Singles Chart.
- Completely Different Title: The film was released in America as The Dragon Flies.
- Creative Differences: Jimmy Wang Yu and Brian Trenchard-Smith fought each other for control of the film.Trenchard-Smith: "There was a great clash of personalities, coupled with the inevitable mutual distrust that occurs in a co-production where both sides think the other is trying to rip them off."
- Enforced Method Acting:
- George Lazenby's arm really caught fire during the final fight scene.
- The fight scene atop of the elevator between Jimmy Wang Yu and Brian Trenchard-Smith allegedly involved real fisticuffs, the punches thrown at the latter allegedly being real punches. Reportedly, the two had a strained relationship during the shoot. As Wang Yu is credited as a co-director in some prints, as such, this movie represents an instance where a film's rival two directors have literary fought it out on the set.
- Fake Nationality: Taiwanese actor Jimmy Wang Yu as the titular Man from Hong Kong.
- Hostility on the Set: Pretty much everyone onset disliked Jimmy Wang Yu for his prima donna attitude. He disliked his leading lady so much that he ate flies before filming a love scene and physically assaulted the director when he filmed his cameo appearance. It got to the point where Roger Ward offered to give him a beating on behalf of Trenchard-Smith. He also forced his Cantonese-speaking castmates to recite their dialogue in Mandarin (despite being perfectly fluent in the langauge), and refused to learn English. On the documentary Not Quite Hollywood: The Wild and Untold Story of Ozploitation, no-one involved with the production had anything nice to say about him.
- The animosity supposedly came from Wang Yu's celebrity being practically nonexistent outside of Hong Kong and Taiwan, and the actor's apparent racism towards his Australian counterparts.
- International Coproduction: The production was co-produced between Hong Kong's Golden Harvest films and Australia's The Movie Company and Greater Union with some investment from the Australian Government's Australian Film Development Corporatio (AFDC).
- Production Posse: A number of the cast and crew who appeared in this movie had previously worked on the earlier Australian movie Stone (1974). This included actors Hugh Keays-Byrne, Bill Hunter, Rebecca Gilling, Roger Ward, Ruth Erica, Rosalind Speirs and Deryck Barnes as well as a number of technical crew. Both films were produced by David Hannay.
- Shoot the Money: All the hang-gliding scenes.
- Troubled Production: In addition to having a prima donna leading man, there were several stunt mishaps:
- George Lazenby got his arm burned and Jimmy Wang Yu was rendered unconscious for two days when he crashed his hang glider.
- A sound recordist was injured during production filming when he broke his ankle whilst a stuntman also broke his foot.
- Two stunt men were injured in a car crash whilst filming the car chase sequence and they were both hospitalized.
- Brian Trenchard-Smith had an accident during filming when he was hit in the eye with chemical spray.
- During the car explosion featured during the opening sequence in Central Australia after the car rolls over had car-door fly off the vehicle, the projectile missed Trenchard-Smith and the camera unit by about a couple of feet.
- Many of the cast and crew working at Ayers Rock (Uluru) in Central Australia suffered from heat exhaustion whilst working there.
- A country house set that had been especially constructed for filming was set fire by vandals during principal photography.
- Wag the Director: Jimmy Wang Yu had previously directed several films in Hong Kong and wanted to be top dog onset, clashing with Brian Trenchard-Smith.
- What Could Have Been: The film was meant to star Bruce Lee.
- Working Title: Yellow Peril.
Trivia / The Man from Hong Kong