What is the meaning of yin-yang imbalance in traditional Chinese medicine?

It is the floorboard of imbalance between yin and yang in human body. It refers to the pathological changes in the process of diseases in which yin and yang lose their relative balance, yin does not control yang, and yang does not control yin due to pathogenic factors. The imbalance of yin and yang is also a summary of the imbalance of qi and blood relationship between zang-fu organs, meridians and collaterals, inconsistency between exterior and interior, fluctuation and other qi disorders.