Continuity mistake: When Jack Burton and the rest of the gang escape from the Wing Kong Trade Centre the first time, the guards fire at the left side of the bus breaking the windows and making holes in the bodywork. When we see the bus a few seconds later as it is driving away, it appears undamaged.
Trivia: The weapons Lightning uses in the street-fight scene are known as ema-piercers - sharpened spikes mounted on finger or hand rings, capable of rotation. However, the rotation usually comes from the motion the user makes in combat; Lightning apparently uses his own power to make them spin like rotors.
Trivia: Kim Cattrall was surprised when she got to the set for the prison scene one morning, as no one told her she would be hogtied for the entire scene (in the story, it was due to a deleted scene when she made trouble for her guards). She endured it like a professional, occasionally having her gag removed so she could drink water. When asked by John Carpenter whether or not she was uncomfortable, she simply replied 'I've been in tighter situations than this!'