At the request of many martial arts practitioners, Mr. Song, the head of the 21st generation of Ziwumen, decided to make the Yijin Sutra of Ziwumen public. This skill belongs to internal skill. After practicing for 2 hours, my palms are hot. Practice 10 hour can survive a small Sunday, the whole body has anti-beating effect, and the abdomen can bear the weight of 200 kilograms; You can get through the big Sunday after 20 hours of practice, and you can also break bricks and stones with your hands. Practicing this skill can strengthen the body, self-defense, dispel diseases and improve intelligence, and prolong life.