Qi is the root of the whole body, & the body’s sections lack any fixed positions. The “Three Sections,” are Upper, Middle, & Lower. Applying it to the body for discussion, the head is the Upper Section, the body is the Middle Section, & the legs are the Lower Section. If we only speak of the Upper Section, then Tian Ting serves as the Upper Section, the nose is the Middle Section, & the tongue is the Lower Section. If we only speak of the Middle Section, then the chest is the Upper Section, the abdomen is the Middle Section, & the Dan Tian is the Lower Section. If we only speak of the Lower Section, the feet are the Tip Section, the knees are the Middle Section, & the thighs are the Root Section. Using the arm, the hands are the Tip Section, the elbows are the Middle Section, & the shoulders are the Root Section. Using the hand, the fingers are the Tip Section, the palms are the Middle Section, & the wrists are the Root Section. We need not discuss the feet, since the concept is clear. In that case, from the crown to the feet, everything has Three Sections. In brief, if you don’t divide things with the Three Sections, you lack the discipline of deliberate, thoughtful action. If the Upper Section is not clear, there is nothing to depend on, & nothing to draw on. If the Middle Section is not clear, the whole body is empty. If the Lower Section is not clear, you’ll suffer a fall. This can not be overlooked! As for how the Qi is mobilized, essentially in all cases the Tip Section moves, the Middle Section follows, the Root Section urges it on, & nothing more. Thus, the Sections exist because we divide the body & discuss them. If we speak of the body as a whole, then from the top to the bottom, the four limbs and numerous bones are all One Section. How can there be Three Sections? Furthermore, how could each Section also contain another Three Sections?