The eight trigrams

By the Tao Arcana editors

A trigram is a stack of three lines, each one either solid (yang) or broken (yin). Three positions with two choices each gives eight combinations, and those eight are the working symbols of the I Ching. If you have read how the trigrams arise from yin and yang, you already know why there are exactly eight; this page is about what each of them means.

Two things are worth knowing before the list. First, read the lines from the bottom up — the lowest line is the first one, the way a plant grows from its root. Second, each trigram carries a family of associations: an image from nature, a member of a family, a direction, a season, and one of the five Chinese elements or phases. We will give you the core handful, the ones that actually help when you read a hexagram. The two pure trigrams, all-solid Qian and all-broken Kun, are the parents; the other six are read as their sons and daughters, which is a tidy way to remember them.

The eight, one by one

☰ Qian — Heaven (乾)

Three solid lines. Element: Metal. Pure yang, undivided strength. Qian is the sky, the creative force, the active principle that initiates and drives. As the father of the family it stands for leadership, persistence, and the kind of energy that gets things moving. In a reading it points toward action taken with integrity rather than force for its own sake.

☷ Kun — Earth (坤)

Three broken lines. Element: Earth. Pure yin, complete receptivity. Kun is the ground that receives the seed, carries weight without complaint, and gives form to what Heaven sets in motion. As the mother it stands for nurture, support, and yielding strength — not weakness, but the power of devotion and patience. It counsels following rather than leading when the moment calls for it.

☳ Zhen — Thunder (震)

One solid line at the bottom, two broken above. Element: Wood. A single yang line surging up beneath the yielding ones — the shock of thunder, a sudden arousing, the burst of growth in early spring. As the eldest son, Zhen is movement and the jolt that breaks inertia. It can be alarming, but it shakes things loose and starts new life.

☵ Kan — Water (坎)

One solid line between two broken. Element: Water. Yang held in the middle, hidden inside yin on both sides — the image of a gorge with the dangerous current running through it. Kan is water, the abyss, the deep, and risk. As the middle son it speaks of plunging into difficulty, but also of water's persistence: it flows around obstacles and always finds the low ground. Danger here is something to move through with a clear head, not avoid.

☶ Gen — Mountain (艮)

One solid line on top, two broken below. Element: Earth. Yang settled at the summit, everything beneath at rest — the still mountain. Gen is stopping, stillness, meditation, the moment of holding your position. As the youngest son it teaches when to stand firm and say no further, and how to find quiet at the right time rather than pushing on out of habit.

☴ Xun — Wind (巽)

One broken line at the bottom, two solid above. Element: Wood. Yin gently entering underneath the firm lines — wind, and also wood that grows by slowly working its roots into the ground. Xun is the gentle, penetrating influence that gets its way not by force but by patience and repetition, the way wind eventually wears stone. As the eldest daughter it stands for soft persistence and gradual, almost invisible progress.

☲ Li — Fire (離)

One broken line between two solid. Element: Fire. Yin at the centre, yang clinging on either side — fire, which has no substance of its own and shines only by holding to the fuel it burns. Li is light, clarity, brightness, awareness, and what we see by. As the middle daughter it speaks of clear seeing and beauty, with the reminder that brightness needs something solid to cling to in order to last.

☱ Dui — Lake (兑)

One broken line on top, two solid below. Element: Metal. Yin opening pleasantly at the surface above the firm lines — a calm lake, an open mouth, the image of joy and exchange. Dui is pleasure, conversation, encouragement, and the satisfaction of things shared. As the youngest daughter it brings lightness and good feeling, the easy openness that makes people glad to be together.

How pairs of trigrams build the 64 hexagrams

Eight trigrams is a useful vocabulary, but the I Ching does its real work with six-line figures. To make one, you stack two trigrams: a lower trigram and an upper trigram. Eight choices below times eight choices above gives sixty-four, and those sixty-four hexagrams are the chapters of the book.

Reading a hexagram becomes far easier once you can name its two halves, because the meaning often grows directly out of how the images interact. Water (☵) sitting above Fire (☲), for instance, gives a hexagram about things in their proper order, the kettle over the flame; reverse them, Fire above Water, and you get a picture of energies pulling apart, the heat rising away from the water that should temper it. Thunder (☳) under the still Mountain (☶) suggests movement penned in below stillness. You do not have to memorise all sixty-four meanings to start; if you know the eight images, you can usually feel your way into a hexagram by reading its two trigrams as a small scene.

The standard sequence of all sixty-four — the order our reading tool follows — is the King Wen arrangement, traditionally credited to King Wen of Zhou, who is said to have set the hexagrams in their familiar order while imprisoned. It is one of several possible orderings, but it is the one the classic text is built around.

Where to go next

You now have the alphabet. The next step is to see it in motion: how a cast produces six lines from the bottom up, why some lines "move," and how a second hexagram can grow out of the first.

Next: how the I Ching works, or go straight to cast a hexagram and watch the trigrams assemble. For reflection and insight, not fortune-telling — see our disclaimer.