CLF is one of the styles Triads practice for those who don't know. Alll fights don't use guns. Sometimes you have to get up close and personal
In NYC most people know about razor blades in the mouth. Guys will fight you and call out numbers letting you know in advance how many stitches you're going to get.
Here is a clip of a guy demonstrating razor fighting. Notice that he has another blade in his mouth with his talking and demonstration with the other blade. Anyone not aware of this should be if you're ever in NYC
http://www.youtube.com/watch?v=JwQJRqlgq1I
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