In traditional Wushu, it is often said to "strengthen internal cultivation". What's going on here?

It is often said in traditional martial arts to "practice internal strength". This is the true meaning of martial arts. To put it simply, for example, the Liuhe emphasized by Neijia Boxing means harmony in mind, spirit and strength. In order to break out and destroy internal and external forces.

There is also the Yijinjing method, which pays attention to the combination of dynamic and static. On the one hand, it emphasizes the compactness of dynamic and static combination in practice methods. On the other hand, it means to be "dynamic and quiet" when practicing, that is, to maintain a state of mental peace, concentrate and breathe naturally; When practicing static kung fu, we should "move in silence", that is, keep the harmony of breath movement in a quiet posture. Only the combination of motion and static, the coordination of heart, qi and body, can refine qi and generate spirit, nourish viscera and qi and blood internally and strengthen bones and muscles externally. Meditation can promote the tranquility and functional adjustment of the body.