The fifth introduction to the hospital: The fifth "Position Chapter" discusses the need to use troops to create a rapid and violent momentum that can overwhelm the enemy, and to be good at utilizing this rapid momentum. What is the potential? Sun Tzu said that this kind of momentum is like a torrent that can lift stones, like a crossbow that is fully drawn on the verge of firing, or like a boulder rolling down a thousand-foot mountain. It has an irresistible force. By using this kind of power to attack the enemy, one can be equal to ten and become invincible.