Tongzi Gong, also known as Tongzi Gong, is an ancient secret internal martial art passed down through generations. It has simple movements, is easy to learn and practice, and has a very significant effect on strengthening the kidneys and enhancing Yang, strengthening the body, enhancing internal qi, especially the qi in the dantian, and resisting external forces. This exercise particularly focuses on the cultivation of internal organ functions. During practice, the movements are guided by consciousness. In sparring, stillness is used to emphasize movement, and a late start leads the way. It is a basic set of Wudang boxing techniques that cultivate both internal and external aspects. After practicing martial arts for more than a month, one can enter the platoon combat training. For the entire set of exercises, the lifting of qi should be slow and deep, while the sinking of qi should be quick and rapid (except for the rubbing movements). This exercise should be practiced in the morning and evening. When practicing, it is advisable to wear loose clothing and loose belts, especially bare-chested. After the internal energy is abundant, one can start the training of the formation and beating.