Why are swords more famous than knives?

The main thing has to do with the shape.

First, it is more regular, the two sides can be completely symmetrical, in line with the traditional Chinese aesthetic point of view, and that he is good, so the people who write things will also be by the way to exaggerate the point of his legend. The shape of the knife is not symmetrical, and generally thicker than the sword, like Gu Long, Jin Yong said "the sword to go light" and the knife can not.

Second, the sword is more convenient to hide, in fact, the ancient good many swords are out of the dark, such as the fish gut sword, you hide a knife in the belly of the fish, not too that, and more than the sword is double-edged, the knife in case of taking the opposite, but also stabbing bad force miles.

And the knife, such as park knife, machete, willow leaf knife, in fact, these are generally bandits and robbers and other people use. It shows a kind of dominance, while the sword seems to have more quality and shows the temperament of the main character.

But I think the main thing is still one, by the influence of aesthetic point of view, synthesize one and two, or the influence of the shape.