From the Turtle to Fuxi: The Origins of the I Ching

It all begins with a turtle and a river. More than 5,000 years ago, long before the invention of writing, long before the first historical dynasties, a man — half human, half divine — is said to have observed the markings on the shell of a turtle emerging from the waters and deciphered in them the very language of the universe. That man was Fuxi. And what he read on that shell would become the foundation of the I Ching (Yi King), the oldest book of wisdom known to humanity.

The story of the origins of the I Ching is inseparable from Chinese mythology. It blends the marvelous and the sacred, fantastical animals and magical numbers. But beneath the veil of myth lies a profound truth: that of a civilization which, from its very first breath, sought to understand the hidden order of the world.

The He Tu: The Map of the Yellow River

Tradition holds that the first "book" of Chinese civilization was not written on paper or bamboo. It was the He Tu — the "Map of the Yellow River" — and it was discovered on the back of an extraordinary creature.

During the reign of Emperor Fuxi, a dragon-horse — a fabulous being, half horse, half dragon — emerged from the turbulent waters of the Yellow River (Huang He). On its flank, one could discern a configuration of dots arranged in a precise pattern. This was not a drawing in the way we understand it, but an arrangement of white and black circles forming numerical groups.

The He Tu is a cosmological diagram. The odd numbers — 1, 3, 5, 7, 9 — are represented by white circles (yang). The even numbers — 2, 4, 6, 8, 10 — by black circles (yin). Their arrangement is not random: it maps the four cardinal directions plus the center, creating a symbolic map of the universe.

For Fuxi, this map was not a mere decorative pattern. It was a message from Heaven, a diagram revealing the fundamental laws governing the cosmos — the interaction of yin and yang, the perpetual dance of complementary forces.

The Lo Shu: The Magic Square of the Turtle

The second sacred document of Chinese tradition is the Lo Shu — the "Writing of the Lo River" — and this is where the famous turtle enters the story.

According to legend, a giant turtle emerged from the waters of the Lo River, a tributary of the Yellow River. On its shell, one could observe markings arranged in a 3-by-3 square — nine cells containing numbers from 1 to 9. The odd numbers were represented by white circles (yang), the even numbers by black circles (yin).

What made this arrangement extraordinary was that it formed a perfect magic square:

• Each horizontal row totals 15
• Each vertical column totals 15
• Each diagonal totals 15

The number 15 is not insignificant: it corresponds to the number of days between the new moon and the full moon. The Lo Shu is therefore a mathematical model of cosmic harmony — a universe where all forces are in equilibrium, no matter from which angle you examine them.

"The I Ching contains the measure of heaven and earth; that is why it enables one to embrace and put in order the Tao of heaven and earth."
— I Ching, Great Appendix (Xi Ci)

The turtle holds a central place in Chinese cosmogony. Its body is a microcosm: the round shell above represents Heaven, the flat plastron below represents the Earth. The turtle is thus, by its very nature, a bridge between the world above and the world below — a perfect messenger to transmit cosmic wisdom to humans.

Long before the I Ching, in fact, the Chinese practiced scapulimancy — divination by bones. They heated flat bones or turtle shells over fire and interpreted the cracks that appeared. The oldest specimens found, the "oracle bones" of the Shang dynasty, date from the fourteenth century BCE and are among the earliest examples of Chinese writing.

Fuxi: The sovereign with dragon scales

Who was Fuxi? The answer depends on which layer of tradition one consults. For history, he is a mythical figure, probably the crystallization of centuries of oral culture. For Chinese tradition, he is the first of the Three Augusts (San Huang), the divine sovereigns who civilized humanity.

His reign is said to have taken place between the 5th and 3rd millennia BCE — a period so remote that it escapes all historical verification. But the account of his life is rich with supernatural details that reveal his exceptional nature.

His mother, Hua Xu, conceived Fuxi miraculously. Walking through the marshes, she found a strange stick and touched it — or, according to other versions, she placed her foot in the footprint of a giant. She carried the child for twelve months — one month for each zodiacal sign, one month for each moon of the year. When Fuxi was finally born, he had a human head and a body covered with scales, and dragons attended his coming into the world.

This hybrid body is not a gratuitous detail. It signifies that Fuxi belongs to two worlds: that of humans and that of primordial forces. He is the mediator between wild nature and nascent civilization.

The inventions of Fuxi: From survival to culture

Tradition attributes a staggering number of inventions to Fuxi, making him the true founder of Chinese civilization:

• Fishing and hunting — He taught humans to make nets by observing spiders weaving their webs, lifting them out of primitive gathering.
• Agriculture — He showed how to domesticate animals and cultivate the land.
• Writing — He created the first notation systems, replacing the knotted strings that had served as memory until then.
• Marriage rites — He established the institution of marriage, organizing society beyond the clan.
• Music — He invented the se, a stringed instrument, civilizing the ear as much as the mind.

But of all these inventions, the greatest — the one that would traverse the millennia — was the creation of the eight trigrams.

The eight trigrams: The Pa Kua (Ba Gua)

By observing the He Tu and the Lo Shu, by contemplating heaven and earth, the traces of birds and the footprints of animals, Fuxi conceived a system of breathtaking simplicity and depth: eight figures of three lines, the trigrams (in Chinese gua).

Each line is either solid (yang ——) or broken (yin — —). With three positions and two possibilities per position, one obtains exactly 2 x 2 x 2 = 8 combinations. These eight figures represent the eight fundamental forces of the universe:

• ☰ Qian — Heaven: three yang lines. Pure creative force, primordial energy. Family: the father. Animal: the horse. Direction: south (in Fuxi's arrangement) or northwest (King Wen's arrangement).
• ☷ Kun — Earth: three yin lines. Receptivity, the nurturing matrix. Family: the mother. Animal: the cow. Direction: north or southwest.
• ☳ Zhen — Thunder: one yang line beneath two yin lines. Awakening, sudden movement, spring. Family: the eldest son. Animal: the dragon. Direction: east.
• ☶ Gen — Mountain: one yang line above two yin lines. Stillness, meditation, stopping. Family: the youngest son. Animal: the dog. Direction: northeast.
• ☵ Kan — Water: one yang line between two yin lines. Danger, the abyss, depth. Family: the middle son. Animal: the pig. Direction: west or north.
• ☲ Li — Fire: one yin line between two yang lines. Clarity, illumination, attachment. Family: the middle daughter. Animal: the pheasant. Direction: east or south.
• ☴ Xun — Wind: one yin line beneath two yang lines. Gentle penetration, subtle influence. Family: the eldest daughter. Animal: the rooster. Direction: southeast.
• ☱ Dui — Lake: one yin line above two yang lines. Joy, openness, communication. Family: the youngest daughter. Animal: the goat. Direction: southeast or west.

This system is remarkably elegant. With only two symbols (the solid line and the broken line) and three positions, Fuxi created a universal language capable of describing all situations, all dynamics, all transformations of the natural and human world.

An abstract vision of the world

What Fuxi accomplished with the trigrams goes beyond the invention of a divination system. He created the first abstract vision of the world — a conceptual model where all of reality is reduced to combinations of two fundamental forces.

Each trigram is not merely a static symbol. It is a process, a moment in the cycle of transformations. Thunder is not just the sound of a storm: it is the energy of every beginning, every initiative, every first step. The Mountain is not just a block of rock: it is the principle of every halt, every pause, every meditation.

"The sage contemplates the movements of the universe and observes the points of meeting and articulation, in order to put the fixed laws into practice. He attaches judgments to each hexagram and to each line in order to know fortune and misfortune."
— I Ching, Great Appendix

This abstraction is comparable — all proportions considered — to the binary system that underlies modern computing. Leibniz, the German philosopher and mathematician of the seventeenth century, had recognized this: when he discovered the hexagrams of the I Ching, he saw in them an anticipation of his own binary numeration system. Yang and yin lines, like 1 and 0, are sufficient to encode infinity.

From myth to oracle

Fuxi's eight trigrams did not yet form the I Ching as we know it. It would take King Wen, more than a thousand years before our era, for the trigrams to be combined in pairs and form the 64 hexagrams — and with them, the text that accompanies each figure.

But the foundations had been laid. By contemplating the markings on a turtle shell and on the flank of a dragon-horse, Fuxi had grasped the essential: the universe is a system of perpetual mutations, governed by the alternation of yin and yang, and this system can be read, understood, consulted.

Whether Fuxi actually existed or whether he is the personification of a slow cultural evolution matters little. What matters is that somewhere in archaic China, human minds looked at the world — the rivers, the animals, the seasons, the stars — and saw in it an order. And they found a way to record it with ingenious simplicity: two types of lines, three positions, eight figures.

Five thousand years later, we still consult those figures. That is perhaps the finest proof of their accuracy.