What do you mean by changing and unchanging?

Firstly, it introduces the basic structure of the Book of Changes. One hexagram consists of two kinds of hexagrams, that is, the second hexagram of "Gan San Lian" corresponds to the fifth hexagram of "Kun Liu Duan". Every article in the Book of Changes is divided into variants and invariants. The change is explained by the "dynamic" method mentioned in the Book of Changes, while the unchanged is regarded as static.

Change is one of the most important elements with variability and uncertainty in Yijing prose. Its essence is to consider from two angles of conditions and results, that is, the relationship between the change of words and the real events it represents. Through the interpretation of changes, we can predict the future development trend or guide people to deal with the current situation.

In the Book of Changes, invariance often appears in the case of small blessings and great disasters. When explaining it, we need to make it correspond to the change. First, judge the good or bad of the unchangeable change, and then comprehensively consider and interpret the corresponding change. At this time, the function of invariant words is mainly to help interpret and better understand and grasp the connotation of words.