The captain tells the police that he didn't commit the robbery because he's a "good citizen" . The captain then tells them that his junior brother got him an "illegal registration" , which means that he doesn't have any documents to prove his identity. The police officer asks if the captain's name is Sun Duan, and the captain says no. The officer then tells the captain that the police's policy is to treat people who confess to crimes leniently, even if they don't actually commit the crime. This is unfair to the captain, who breaks the handcuffs.