It's also my favorite police and gangster movie. It sums up the plot in four words: who is the undercover. Andy Lau, Tony Leung, and Shawn Yue are all my favorite handsome guys, but don't get me wrong, the plot of this film is more slick and fascinating than looking at the face. And no matter whether the police or the gangsters, there is a kind of feeling that makes you love, hate and feel distressed. Love them because they have their own difficulties. Hate them sometimes because they are too cruel and sometimes because they are too kind. As for the heartache, It's when they face the pity of their loved ones who can't confess their identities and can't stay by their side, and they have to bear it silently alone, which is heart-wrenching.
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