From the Yi-ology

four elements are common in the medical books in the Qing dynasty

and is a subject with more rich connotations. Through systematically combing the medical books in the Qing dynasty

the expression of form of four elements can be divided into two categories of formula and herb four elements and human body four elements

including four elements of herbs

formula

zang-fu viscera

meridians and channels

constitution

dangong and daoyin. Thoughts of four elements in different scenarios are different and cannot be replaced

which played an important role in optimization and improvement of traditional medicine theory.