Three bullets.
Why are three bullets? The intuitive point of view, of course, is based on narrative considerations: only if the magazine of this revolver is half full, can it create a suspense effect similar to Russian roulette, especially the black cruel humor of dying struggling to fire three empty guns in a row. But behind it is the Coen brothers' criticism of excessive violence. In the earlier plot of the film, we saw that when the heroine went home to pick up the gun, the bullets were separated, and there were only three bullets in the box. From the subsequent progress of the private detective’s fire-night inspection footage, it was learned that the heroine did have three bullets loaded, but it did not fill it up! Obviously, holding a gun is only for self-defense, even her husband, so he thinks that three bullets are enough.
And this kind of implicit expression cannot be transplanted into Zhang Yimou's remake because the revolver could not appear in ancient western China. But the concept itself is indeed very important (and the main reason for spending 2 million US dollars to buy the copyright remake), it must be the beginning of the film. No way, Director Zhang had to bluntly added the firing section. Trying to simulate the full capacity of the pistol with the power of the cannonballs, and then use the blackened face of the Persian merchants after the cannons were fired to express excessive violence and harm to others.