In Chinese Medicine, our bodies and minds work through interaction of the four Vital Substances Qi, Blood, Essence (Jing) and Body Fluids. These substances manifest in different degrees of “substantiality” ranging from totally material to totally non-material. Qi is the basis for all four vital substances, while the other three are all manifestations of Qi varying in degrees of substance (material to non-material). These four substances interact together to form an organism.
