 According to Jackie Chans autobiography, the film took 9 months to  shoot and ended up costing over US$9 million, a staggering amount  for a Hong Kong film at the time. The film bombed at the box office  and the studio, Golden Harvest, was not happy. So in an attempt to  recoup some box office, Chan made the globe trotting adventure  Armour of God II: Operation Condor (Fei Ying Gwai Wak).