Continuity mistake: When Maurice is running up the stairs in Aaliyah's house, the pizza box he is carrying contains at least 4 slices in it. However, a few shots later, when he enters her room, the box contains only 3 slices of pizza. (01:21:10)
Continuity mistake: The movie takes play in the SF bay area... yet many of the aerial shots of the city are of Vancouver in Canada.
Factual error: Apparently, Han escapes from a prison in Hong Kong. Then why are the guards speaking Mandarin, which is spoken in China and Taiwan? The guards should have been speaking in Cantonese, which is Hong Kong's dialect. This was probably to convenience Jet Li, who speaks Mandarin but probably little Cantonese.
Other mistake: At the very end, when Han's father kills himself, Han is allowed to calmly walk out, reunite with Trish, and then both just calmly walk out of the scene without a single police officer stopping them for questioning. There is no way the police could've known at that very moment if Han didn't kill his father, or what exactly took place. Nobody interacts with him, as if everything is perfectly clear to the police.
Continuity mistake: Han and Trish are fighting a Chinese woman after the car chase. Near the end of the fight Han uses Trish to kick the woman, who happens to land on a pointy metal object. She switches from falling forwards to falling backwards between shots. (01:11:00)