A long time ago, ancient Chinese recognized that wood, fire, earth, metal and water were the basic elements necessary for life. Later, this abstract concept was gradually developed into the five-element theory of traditional Chinese medicine. 很久以前古代的中国人认为.木、火、土金、水是构成生命的基本要紊.后来.这种抽象的认识渐渐发展成为中医的“五行学说。