Factual error: While the 1960s-70s era Hong Kong vehicle licence plates were period-correct as far as number sequence (no letter prefix) and having white plates front and back, the type of plastic, retro-reflecting plates shown are from the modern era (post-1983). Cars in HK from that period had non-retro-reflecting plates, with either numbers painted on with stencils, or individually mounted plastic letters.
Double Impact (1991)
1 factual error - chronological order
Directed by: Sheldon Lettich
Starring: Jean-Claude Van Damme, Geoffrey Lewis, Alonna Shaw, Corinna Everson
Revealing mistake: After Alex has crushed Zhang's hand in the cogs on top of the crane we see that while covered in blood there is no other damage to Zhang's hand. He even manages to move it and his fingers when in fact all the bones in his hand should have been crushed and the muscles and skin torn leaving his hand in tatters and unusable.
Danielle: Where are you anyway?
Alex Wagner: I'm taking my brother on a fishing trip.
Danielle: Give him a big kiss for me, all right?
Alex Wagner: Big kiss? I'll give him a big kick in the ass, that's what I'll give him.