Offensive aspect: Many people may not be used to hitting their opponents with their palms, but it is safer to hit them with their palms than with their fists, mainly because it is not easy to break their wrists. Hit your opponent with your fist. If your wrist is not strong enough, it is easy to cause joint damage. And it is easier to make the so-called inch strength and inner strength with the palm than with the fist. When hitting with fist, the forearm muscles are stiff, which hinders the diffusion of the whole strength, while when hitting with palm, the whole arm is relatively relaxed, and it is easy to exert the inch strength and internal strength with the help of the whole body strength, which is more lethal;

Defense: When the hand is open, it can act as a finger. It is the hook, grab, sweep, insert and so on in the process of attack and defense. When you can't beat your opponent, you can easily use the grip and throw at any time. Always clench your fist, the whole arm is not so sensitive, and it is easy to create a passive situation for yourself in the process of attack and defense. Moreover, when the hand is relaxed, it can feel the source of the other person's strength, which is called "listening", so as to respond more quickly and accurately.