Continuity: When Liu escapes the boat and jump under the bridge, he quickly join a metro platform. The name that can be seen on the wall is "Invalides". When Liu enters the metro train the name can still be seen, but when the metro train leaves the station, the other station name boards on the wall display "Porte des Lilas". (The scene was actually shot in the former "Porte des Lilas" metro station that is now dedicated for the shooting of films. The Director forgot to ask the staff to change all the station name boards to "Invalides".)
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