The so-called "Xici Zhuan" said that "the ancient Bao Xi family was the king of the world. He looked up and observed the phenomena in the sky...so he began to do Bagua..." This is the source of Fuxi's hexagrams.
"Tai Chi Picture", also known as "Xiantian Picture" or "Picture of Heaven, Earth and Nature", is the most mysterious picture in ancient Chinese culture. According to legend, the Tai Chi Bagua Diagram was first created by the ancient sage Fu Xi, and is recorded and explained in detail in the "Book of Changes" of the "Five Classics". The ancients believed that Wuji gave birth to Tai Chi, Tai Chi gave birth to two yin, two yin gave birth to four images, four images gave birth to Bagua, Bagua gave birth to sixty-four hexagrams. This is the basic theory that Tai Chi transforms into Bagua. Tai Chi Diagram is an important image in the study of "Yi", so it is also called "Yi Diagram". "Tai Chi Diagram" originated very early. It is said that the ancient "Tai Chi Diagram" was painted on pottery during the Xia and Shang Dynasties more than 3,000 years ago or earlier. There is an S-shaped curve drawn in the circle, and the black and white yin and yang points were added later. Today's "Tai Chi Diagram" is generally believed to be made by Zhou Dunyi in the Northern Song Dynasty. The ancient Chinese "Tai Chi Bagua Diagram" has made many contributions to modern science. The German mathematician Leibniz was the founder of the binary system of modern electronic computers. It was with the inspiration and help of the ancient Chinese Tai Chi Bagua chart that he came up with an idea and succeeded in one fell swoop. In the late autumn of 1701, while he was painstakingly studying the multiplication machine, a French missionary friend sent him the "Sequence Map of Fuxi's Sixty-Four Hexagrams" and "The Orientation Map of Fuxi's Sixty-Four Hexagrams" from Beijing. Leibniz was inspired by these two pictures. He was greatly inspired to discover that Bagua is the prototype of hieroglyphs. From the Kun hexagram through Gen, Kan, Xun, Zhen, Li, Dui to the Qian hexagram, it is precisely from zero to seven that a complete set of eight natural numbers is formed. Binary level number shape. The "—" in the Bagua is called the Yang Yao, which is equivalent to the "1" in the binary system, while the "＿＿" in the Bagua is called the Yin Yao, which is equivalent to the "0" in the binary system. Hexagram sixty-four is the complete binary number form of the 64 natural numbers from 0 to 63.
In mathematics, Bagua belongs to the eighth-order matrix