There are twelve hexagrams in the Book of Changes, corresponding to twelve months of a year. How to understand them?

There are twelve hexagrams in the Book of Changes, corresponding to twelve months of a year. How to understand them? The Book of Changes has twelve hexagrams, which are called twelve hexagrams. Twelve hexagrams is an inductive method of ancient astronomy in China, which is summarized into twelve hexagrams by combining the laws of the universe and the changing laws of the four seasons every year. The ancients extracted twelve hexagrams from Fuxi's sixty-four hexagrams to show the changing law of solar terms. These twelve hexagrams are twelve bi hexagrams, also called twelve news hexagrams, twelve December hexagrams and twelve waiting hexagrams. They are: Fu Gua, Lin Gua, Tai Gua, Da Zhuang Gua, Bi Gua, Gan Gua, Qi Gua, Negative Gua, Official Gua, Stripping Gua and Kun Gua.

Among the twelve hexagrams, from heavy hexagrams to dry hexagrams, yang hexagrams were born one after another, that is, the position of yang hexagrams rose from the initial hexagrams: heavy hexagrams meant that the initial hexagrams were yang hexagrams; The pro-divination is the first divination, and the second divination is the yang divination; Thai hexagrams are the first, second and third hexagrams. Great strength means that the first, second, third and fourth are yang; He is the first, second, third, fourth and fifth. All divination is yang. On the contrary, from divination to Kun Gua, Yin gradually rises.

The twelve hexagrams correspond to November, December, January, February, March, April, May, June, July, August, September and October.