What do you mean by "three joints and six joints" in martial arts?

In martial arts, the human body and limbs are divided into "three sections", namely, the tip section, the middle section and the root section. In terms of the whole body, the head for the tip section, waist for the middle section, legs for the root section; in terms of the upper limbs, the hand for the tip section, elbow for the middle section, shoulder for the root section; in terms of the lower limbs, the foot for the tip section, knee for the middle section, crotch for the root section. Wushu has always been "three sections to be clear", that is, to master the laws of movement and the order of action. Such as punching the fist requirements of the tip section, the middle section with the root section; stirrups should be from the root section to the tip section, section through. Understand the three sections of the human body, through the coordinated movement of the sections to reflect the "four bodies and all the bones of the total for a section" of the holistic nature.

"Six Harmonies" refers to the internal and external harmonies of the human body when practicing boxing. The "internal triad" refers to the "heart, mind, and qi", i.e., "heart and mind, mind and qi, qi and force". "External Harmony" refers to the harmony of "hands and feet, elbows and knees, shoulders and hips", i.e. "hands and feet, elbows and knees, shoulders and hips". The internal and external unity, that is, six harmony.