British martial arts actor Mark Houghton spends much of the movie carrying a sword for his Japanese boss played by 'Michiko Nichiwaki', the original plan was for her to fight with the Tai Chi sword during the finale and while thats the shape of sword that Houghton carries for most of the film, during the finale when he draws the sword, it has now changed to a Chinese broadsword.
According to Jonathan Isgar, the snakes featured in the film were treated very poorly, having had their fangs ripped out and being left in a bag for two days.