Revealing mistake: When Kit Li takes off in the hijacked police helicopter, and the first time the copter's fuselage is fully visible, it is obvious that the rotor blades are turning too slowly to ever facilitate lift-off. (01:20:40)
Other mistake: In the exterior shot of the Grandeur Hotel, it's a poorly made building prop and its name is misspelled "GRANEDUR." (00:18:00)
