Fuxi's eight diagrams, also called innate gossip, were written before, and Fuxi lived in ancient times. King Wen discovered the eight diagrams created by Fuxi in the Middle Ages, that is, the Shang Dynasty, when Zhou Wenwang was in prison, which was very interesting and magical, and included everything in the world. So he wrote the words and rearranged the order. "As for why Wen Wang rearranged the gossip, it is said that Wen Wang joined his thoughts on politics at that time, that is to say, he had the meaning of anti-Shang Dynasty" and wrote the Book of Changes.
The Book of Changes spread to recent times, that is, the time when Confucius lived, and Confucius annotated the Book of Changes in classical Chinese. The Eight Diagrams of the Book of Changes were created by the three of them, so they are also called "three saints" and "three ancients". That is to say, the Eight Diagrams of the Book of Changes were created after three ancient times.
why did Wen Wang modify Fuxi innate gossip? Let's look at innate gossip first. In Fuxi era, it was believed that' heaven and earth are all up and down', that is, heaven is above and earth is below. Heaven moves and the earth is still', that is, moving is yang and static is yin. The hexagram is composed of'-'as the yang hexagram,'-'as the yin hexagram, the stem is composed of three yang hexagrams, and Kun is composed of three yin hexagrams, so innate gossip regards the stem as the heaven above and Kun as the earth below. Innate gossip treats heaven and earth (heaven and earth, men and women). As the saying goes,' Qi will eventually change', that is, when things reach the end (extreme), they will change to the opposite side, so it is particularly philosophical that the summer solstice is yin and the winter solstice is yang.
Eight trigrams are divided into successive days, and the eight trigrams of the day after tomorrow, also known as the eight trigrams of King Wen, are located in the east. Clockwise, it is Xun, Li, Kun, Dui, Gan and Kan (due north); Gengua, Northeast China. As a symbol of solar terms, the earthquake is the vernal equinox, Xun is long summer, Li is the summer solstice, Kun is beginning of autumn, and it is the autumnal equinox, dry is beginning of winter, Kan is the winter solstice, and Gen is beginning of spring. That is, the ordinal numbers are: Kanyi, Kuner, Zhensan, Xunsi and Wuzhong Palace, Ganliu, Duihui, Geba and Lijiu.