Breathe indoors and exercise your muscles and bones outdoors. Internal training strengthens internal strength and external training strengthens bones and muscles. Only by practicing both inside and outside can we succeed. China Wushu has always pursued both internal and external cultivation, with both form and spirit. The so-called "inner" and "spirit" refer to the inner, mental and spiritual content. The relationship between the external form and the internal God is that the external form is controlled by the internal God, and the internal God is manifested through the external form. That is to say, on the one hand, one or a series of martial arts movements are always performed or expressed in various ways through the coordinated activities of the nervous system on the limbs and trunk of the body under the control of the spirit and will of the martial arts practitioners; On the other hand, the spirit, essence and will of martial arts practitioners about this action are reflected by various martial arts actions composed of coordinated activities of limbs and trunk. The external forms of Wushu, such as one stroke, one style, opening and closing, can be taught and observed, while the internal spirit of Wushu can make its external body movements and internal sense of attack and defense achieve harmony and unity, and finally achieve the realm of "both form and spirit"