The meanings of Xiang（ image

象） in traditional Chinese medicine Xiang-Thinking can be classified as physical state

function

commonness

and law from the development of human understanding of things and also can be classified as objects

tools

and cognition from the constituent elements of human mind. Xiang is the overall information of objects and its reflection and creation in human brain. Xiang can be divided into natural image and artificial image in general and the latter includes concept image and symbol image.