

Attribution of things to the five elements
Man lives in nature. The natural environment,
such as weather changes and geographic conditions, greatly influences his
physiological activities. This fact is manifest in man's dependence on the
environment, but also in his adaptability to the environment. This is known
as correspondence
between
man and nature. Proceeding from this recognition, traditional Chinese medicine
comprehensively connects the physiology and pathology of the zang-fu organs
and tissues with many important natural environmental factors. These factors
are classified into five categories on the basis of the five elements. Similes
and allegories are used to explain the complicated links between physiology
and pathology as well as the correlation between man and the natural environment.
The following table shows the five categories of things classified according
to the five elements.