Dantian (Xiadantian here) is not only an important part of Taoist health preservation, but also an important part of the human body in martial arts practice. When practicing Tai Ji Chuan, we should pay attention to the sinking of breath, and coordinate with the up and down opening, closing, retracting and advancing. Breathe naturally. There can be no interruptions. Take a deep breath and breathe slowly, evenly and for a long time. Tai Ji Chuan's routine exercises generally require you to start inhaling and exhaling, start inhaling and exhaling, and close inhaling and exhaling. With this exercise, over time, you can gradually achieve breathing sinking. The gas sinks rather than floats. Relax your whole body to your feet. When the qi disappears, the whole body can sink with it. The air gathers to the bones, and truly achieves the state of relaxation. Of course, this requirement should be combined with chest pulling and back pulling. In fact, Xingyiquan, which is also a family-run boxing method, also has this requirement. "Top, buckle, circle, sensitivity, embrace, drop, bend and stand" of Xingyiquan. One of the "drooping" is that the breath should droop and sink to the abdomen, so that the footwall will be as stable as Mount Tai. Secondly, you should also pay attention to the convergence of your hips when you breathe down. It is also one of the most important requirements of Tai Ji Chuan, and it is also one of the essential differences between Neijia Boxing and other kinds of boxing. From Sun Fuquan to Li Yulin. From Li Tianji to Niu Shengxian, great martial artists of all ages emphasized the importance of hip-harvesting. As my teacher said, the weight below the hips accounts for a large proportion of the whole body. Only by holding the hips can the strength of the whole body form a whole and the strength will be complete. Once the hips are pushed out. The skill of the whole body will be decomposed a lot, so it is the fundamental requirement of Neijia Boxing. After closing the buttocks, the strength of the whole body can be relaxed to the feet. When the hair is released, the strength of the whole body can be used reasonably, from heel to leg, to hip, to abdomen, to waist, to chest, to shoulder, to elbow, to wrist, to hand and to fingertip. In this way, the strength of the whole body can become a complete system. In confrontation, the other side's strength can be intercepted. Using a person's whole body strength, plus the elasticity of the abdomen. Let the opponent out (see the 10th anniversary special issue of Niu Shengxian Guangzhou Xingyiquan Club, you ruined my Tai Ji Chuan II). This way. On the one hand, breathing sinks in routine practice, and on the other hand, the buttocks strictly converge, and the compression of the two will gradually reach the realm of air sinking. The requirements for hip convergence and breathing mentioned above. In Tai Ji Chuan's actual practice, it is not difficult to meet one of the requirements alone. However, it is not easy to meet these two requirements at the same time in physical exercise and combine and coordinate them organically. And this is also one of the important standards to reflect one's skills. If expressed by a functional relationship, hip convergence and breathing can be regarded as the two most important variables that embody the traditional martial arts "Kung Fu" in China. The combination of these two variables focuses on the human abdomen. Abdominal breathing is the reason why China martial artists often talk about sinking the abdomen. The combination of hip tuck and breathing, in the movement of the body. Squeeze up and down, back and forth, force, strength and qi gradually compress, concentrate on the abdomen, and eventually sink into the abdomen, forming a solid abdomen result. After qi really sinks into the abdomen, the lower abdomen is always solid regardless of breathing, exertion, speech and behavior. This is the "spirit should be agitated" mentioned in the famous "On Taiji Biography" and "mind should be kept at the waist and abdomen should be relaxed and calm" mentioned in "Song of Thirteen Potential". Tai Ji Chuan's real kung fu master. He was very angry after being demonstrated. The abdomen is very strong. When hit by the opponent's fist. The abdomen will naturally have a certain combat capability. This can be used as one of the criteria to test whether a person really knows Tai Ji Chuan. My teacher once mentioned Mr. Hao Jiajun, the pusher. He released people with his abdomen quite vigorously, even more vigorously than ordinary people with their hands. In order to let us experience what is meant by "anger rising", the teacher once asked us to hit him hard in the abdomen in daily training, and also experienced how the teacher forced us out with his abdomen when pushing the hand. From 65438 to 0978, during the fourth delegation of Tai Ji Chuan, Japan visited China, my teacher taught some Japanese friends Tai Ji Chuan to push hands in Chongwen Gymnasium. Japanese friends didn't expect the teacher to be small and thin, but it was difficult to push. Later, the whole group 13 Japanese friends lined up and took turns to test their strength on the teachers. As a result, no one can push the teacher. Once a Japanese friend curiously opened the teacher's clothes and found that the teacher's abdomen was as hard as a stone. This is also the performance of Shen Dantian. It is more difficult to combine hip retraction with breathing in boxing training, which is one of the important secrets discovered by ancient people in China in constant practice. Summarize this experience here today, hoping to help you understand traditional Wushu, discuss, study and sort it out together, and better inherit the essence of this Chinese nation. (About the author: I graduated from the Philosophy Department of Renmin University of China in 2003, and now I am working in the Research Office of the Beijing Municipal Political Consultative Conference).