(1) Interoperability:

Under certain conditions, yin and harmony can be transformed into each other, yin can be transformed into yang, and yin can also be transformed into yin. Such as the transformation of cold syndrome and heat syndrome, the cold and heat properties of the lesion have changed, and its yin and yang properties have also changed. In the process of human body gasification, between biological substances and physiological functions, substances belong to yin and functions belong to yang. Under physiological conditions, they can be transformed into each other, substances can be transformed into functions, and functions can also be transformed into substances. Without this mutual transformation of matter and function, life activities cannot be carried out normally.

(2) Infinite separability:

Infinite separability of yin and yang means that there is yang in yin, yin in yang, and yin and yang in yin and yang, which are constantly divided into two or even infinite. For example, it is sunny during the day and cloudy at night. The morning is the yang in the yang, and the afternoon is the yin in the yang; The first half of the night is yin in yin, and the second half is yang in yin. With the change of opposites, Yin He was split again.

Everything that is interrelated in nature can be summarized as yin and yang, everything can be divided into yin and yang, and either side of yin or yang in anything can be divided into yin and yang. This opposite and interrelated phenomenon of things is endless in nature. Therefore, "there are as many as ten yin sums, as many as one hundred, as many as one thousand, and as many as ten thousand, but they need one" ("The Difference between Yin and Yang in Su Literary Theory"). This relativity of yin and yang attributes not only shows the regularity and complexity of yin and yang attributes of things or phenomena, but also shows that yin and yang summarize the universality of things or phenomena, that is, every thing or phenomenon contains yin and yang and is divided into two.