According to Jackie Chan's autobiography, this movie took nine months to shoot and ended up costing over nine million U.S. dollars, a staggering amount for a Hong Kong movie 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 2: Operation Condor (1991).
A typhoon destroyed many of the sets of this movie. The crew had to rebuild to finish the production.
Jackie Chan sustained an injury, a deep cut over his left eye, while performing a stunt in which he flipped backwards onto a rickshaw.
Filming took place from December 1988 to March 1989.