In the film, Ah Rong's arrogant declaration that "as long as there is a gun, the world is ours, and everyone will be afraid of us" was met with the scene of fierce gunfire in the jewelry store. Ah Rong's practice became extremely ridiculous and seemed to have already doomed Ah Rong's fate; When I was held hostage by Yue * * to slaughter American troops for fun, I deeply felt that the small environment was pale and powerless in front of the big environment. Secondly, the war made people lose their affection and family. It is set that A B fled back to Hong Kong and saw his own flesh and blood unable to recognize him (people have to suspect that the original wedding scene was only for the following service), and also let people see a different John Woo. The movie "wyndell dichinson" took place in Viet Nam from the beginning until the climax, and the English name "Bullet in the head" was literally translated to point out the theme more nakedly-all caused by "bullets in the head". (Wu Shuo, A B is more like his own incarnation, and the killer A Le (Yam Tat-wah) is more like his master's front-screen perspective, because he witnessed the process of everyone escaping from life and the process of A B settling grievances. The killing in the film ranges from self-defense to hasty escape. Wu Yusen takes the metaphor of "money is hard to earn" as the cornerstone, and then takes "brotherhood" as the test. The crystal derived from it is a tit-for-tat pill, so the bullet in the head is also the crowning touch to end the whole movie.