What is the mystery of the Book of Changes?

The Book of Changes is an ancient book in China, which is called "the heavenly book". It consists of knowledge and skills, involving philosophy, history, military, medicine and folk customs. Among them, the Daoism in the Book of Changes has developed from generation to generation, and so far, four pillars, eight diagrams, six sirens, Daoism, Taiyi Shenshu, Meihuajiu, Wei Zi Doushu, physiognomy, palm reading, astrology and other techniques have all blossomed and borne fruit. It can be said that The Book of Changes is the earliest encyclopedia in China.

The Book of Changes is a wonderful book throughout the ages, the king of all classics and an unparalleled masterpiece. The ancients used the Book of Changes to learn to look up at astronomy, overlook geography, understand the feelings of all things, and use it to explore the unknown universe and the great truth of life changes. The so-called "when studying heaven and man, we can change from ancient times to today." The eight trigrams in the Book of Changes are: Gan, Kun, Zhen, Xun, Kan, Li, Gen and Hui. Sixty-four hexagrams originated from eight diagrams, and each hexagram is actually a cumulative change of symbols "-(Yang)" and "-(Yin)". "-"stands for Yang, Gang, Xiong, Jin and odd numbers 1, 3, 5, 7, 9, etc. , a symbol of positive things; "-"stands for yin, softness, weakness and even numbers 2, 4, 6, 8, 10, which symbolizes negative things. The change of parity between Yin and Yang represents various internal relations between "image" and "number".