Long zhi ren zhe

After the film's success, producer Ng See Yuen had a huge dispute with the Taiwanese producers regarding with hiring Conan Lee to their pictures which led to misleading where producers thought Ng refused to let them hire Lee. This ended up led the Taiwanese producers to hire a Taiwanese triad members to severely injure and black mailing Ng. Ng See Yuen decided to let Conan Lee off from the contract.

During the intro scenes, eight ninja run the parcour. When they scale the wall with their hand-claws, there are suddenly just six, and when they run down the steps in the forest, they suddenly number eight again.

German theatrical and VHS releases are cut during some violent scenes to qualify for a "Not under 16" rating. With the same "Not under 16" rating, only in the 2010s was the movie released uncut on DVD and Blu-ray in Germany.

Featured in NG See Yuen: Inside the Dragon's Den with Roy Horan (2002)