A very simple way is to open your mouth slightly, and massage 10 times with the previously taught hand shape on the mandibles on both sides of your cheeks (where the molars bite and your mouth moves when you open it). Using the part between 1 joint and the second joint can exert force more effectively. Special action: (1), stimulate the neck with the second joint of both hands and fingers. Move up and down at the front of the neck, then move to the sides of the neck, up and down five times. Push slightly when going up and relax slightly when going down. (2) Raise the mandible, make a fist with both hands, place the second joint of the finger under the mandible, move from the center to both sides, and then move back and forth from both sides to the center for 5 times. Strong from the center to both sides, and weak on the contrary. This method can also be used with thin face fruit, and the effect is excellent, and the effect can be seen in a week.