Factual error: When the God Skills Society disciples build the altar in front of Ching's family temple, they just cover the horizontal ladder-like part with only a cloth strip and then place two candles and a heavy bowl with incense sticks on top without making the cloth sag between the rungs or the items fall off, since there is no solid board underneath.
Ninja In The Dragon's Den (1982)
1 factual error
Directed by: Corey Yuen
Starring: Hiroyuki Sanada, Jeong-lee Hwang, Conan Lee, Po Tai
Revealing mistake: Jen Moo cuts off the God Skills monk's ear, but as Ching picks it up, it strangely shows no opening for the ear canal.
Trivia: The 'torpedo-digging' trick Jen Moo uses in the final fight is a standard trick of all Hong Kong ninja movies made in the 80's.