classification of qi

Classification of qi: Generally speaking, the qi of the body is originated from essential qi stored in the kidney, essential qi of water and grains transported by the spleen and stomach, and clear qi inhaled by the lung. It is formed by combing the three by the functions of internal organs, such as the lung, spleen, stomach, kidney, etc. There are many kinds of qi according to the constituents, distribution, and features of action of qi, among which the primordial qi mainly consists of the essential qi stored in the kidney and flows throughout the body via the triple energizer; the chest qi is composed of a combination of the refined matter from foods and clear qi of the nature, and it gathers in the chest to promote the respiration and the circulation of qi and blood; the nutritional qi mainly originates from the essential qi of water and grains and flows together with blood in vessels; the defensive qi also originates from the essential qi of water and grains but flows outside the vessels; furthermore, there are the visceral qi and meridian qi.