The plot is tight and twisted, absolute masterpiece. However the characters portrayal are absolutely confusing, by inserting so many disposable characters just to give the young actors (and actresses) opportunities. Those characters have very simple backstories that do not matter to the plot dedvelopment. The movie is propped up by the two veteran Jackie Chan and Tone Leung. This is a must-watch for the sake of the final few pieces of action movies while they still can. There might not be anymore from them in the future, as the exhaustion is already apparent in this one.

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