*Basic Substance : Doctors of traditional Chinese medicine (abbreviated to TCM) believe that vital energy - moving and energetic particles, state of blood, and body fluid are the essential substances that compose together to form the human body, and the basis for internal organs to process. They are channeled along a network within the body - Jing Luo as their channels. On the physical side, vital energy serving to promote and warm belongs to the properties of yang, and blood and body fluid to moisten possesses the properties of yin.
===Five Phases theory===
[[File:420px-Wuxing en.svg.png|thumb|350px300px|left|Oregon GrapeInteractions of Wu Xing]]
Five Phases (五行), sometimes also translated as the "Five Elements" theory, presumes that all phenomena of the universe and nature can be broken down into five elemental qualities – represented by wood (木), fire (火), earth (土), metal (金), and water (水).In this way, lines of correspondence can be drawn: