Analyze the technical requirements for head wrapping and brain wrapping in knife fighting? Who knows?

Wrapping the head and wrapping the brain is a classic knife technique, which can protect oneself and kill the enemy. As the saying goes, the head wrapped around the brain progress cut, the world knife will be half. The knife, with the back of the knife close to the body, the blade facing outward, to protect themselves a week body, downstream chopping, can also be stabbed and stabbed. The smaller the circle of the wheel, the faster the speed, the tighter the protection of oneself, is the better.