Yin-n-Yang : More ...

It is more than merely opposites such as hot-n-cold or hard-n-soft. It is a principle explained as the behavior of all organic and inorganic things that make up and are the "universe." It includes the "invisible energy" that is a part and parcel of everything in said universe down to what is discussed as a new science today, quantum physics. It incorporates creation, interaction and death of all things in an unending cycle or circular principle of all that is said to be "tao."

The basic elements of the cultures for Japan, China and Korea are very precise manifestations of the yin-n-yang principle. To see those cultures we see the principle as applied to male and females, seniors and juniors, and to all relationships and activities to include the food they eat and the actual order in which it is consumed.

This relationship is not "fixed." It remains active, it waxes and wanes much like the moon waxes and wanes as it circles the Earth as both circle the Sun. All cultures, with emphasis on Asian cultures here, where the culture tries to keep all yin-n-yang relationships in balance or harmony.

That balance is not what most think. It is not an equality in a relations where one might say it is the middle between and extreme hardness and an extreme softness but rather a balance that is acceptable to the parties involved - whether they are a balance liked or disliked by either and whether they are balanced do advantages or disadvantages by either - merely an acceptable state for both involved.

The human equation to yin-n-yang as to Chinese thought is human relations are situational. Absolute equality exists only in relative terms and only for the present moment - short period of time.

Bibliography:
DeMente, Boye LaFayette. "The Chinese Mind: Understanding Traditional Chinese Beliefs and Their Influence on Contemporary Culture." Tuttle Publishing. Rutland, Vermont. 2009.

DeMente, Boye LaFayette. "The Chinese Have a Word for It: The Complete Guide to Chinese Thought and Culture." McGraw Hill Publishing. New York. 1996.