Those shootouts don't hold a candle to the craziness of Hard Boiled. The majority of this scene had to be done in one take, and the actors were basically ordered to keep going no matter what (since, after six previously failed takes, and a budget that was running out, they literally couldn't afford to make any more mistakes). The actors managed to get through this last chance without stopping, despite the fact that a piece of glass from a shattered window sliced through one of Tony Leung's eyeballs as they were filming.
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