Continuity: Many, as Bruce Lee's role in this film was composed entirely of archival footage. Most noticeable is when his character visits the Abbot, who alternates between a man with a grey beard and red costume to a man with a white beard and a yellow costume.
Personale o equipaggiamento visibile: When Lewis delivers the final kick to the face of the second of the Wu/Yen brothers, a wire harness for the stuntman can clearly be seen sticking out from the arms of his vest.
Revealing mistakes: The lion fighting Bobby Lo is a laughable fake.
Revealing mistakes: The wire to pull the monk in mid-air (after being thrown by Bobby Lo) is a little too late, he ends up being pulled along the ground instead.
Continuity: Bobby Lo somersaults forward over Chin Ku in mid-air, however he's finishes it backwards in the next take.