In the scene of the firefight on the bridge, a barrel of whiskey stopped flowing out, but in the next shot, the wine started flowing out again.
When the killer sneaked into Ma Long's apartment, the reflection of the camera and the staff could be seen on the window.
At the assembly point on the Canadian border, the Canadian Mounted Police officer is a captain, but the police level of the Royal Canadian Mounted Police RCMP adopts the British model instead of the American model, so the Canadian Mounted Police officer should be an inspector.
Anachronism: In some scenes, it can be seen that Nas smokes filter cigarettes.
Anachronism: At the Canadian border, a 1980s car can be seen driving past in the background.
Facts are wrong: In the movie, Nas and his wife have two children. Elliott Nas in real life has only one child, and he is still adopted.
