The Structure of the I Ching
The whole symbolic architecture rests on one binary: yin (⚋, a broken line) and yang (⚊, a solid line). Stack three lines and you get the **8 trigrams** (2³ = 8) — Qian, Dui, Li, Zhen, Xun, Kan, Gen, Kun — each representing a natural force: heaven, lake, fire, thunder, wind, water, mountain, earth. Stack two trigrams and you get the **64 hexagrams** (2⁶ = 64), each composed of 6 lines.
The six lines of a hexagram are read from bottom to top. **Each line is either yin or yang, and each can be either "changing" or "stable".** A changing line is one that will flip in the near future — yin becoming yang or the reverse — so every reading yields both a primary hexagram (the current situation) and a derived hexagram (the trajectory). This is the clearest difference in granularity between the I Ching and tarot: a tarot card is a relatively fixed image, whereas a hexagram carries its own direction of motion built in.
When Leibniz independently invented binary arithmetic in the 17th century, he noticed the I Ching had the same structure — yin as 0, yang as 1. The parallel is a mathematical coincidence, not evidence that the I Ching is "a binary computer", but it does show that the combinatorial logic underneath it is clean.
The Three Meanings of 易
The single character 易 (yi) is traditionally read in three senses, known together as the "three changes" (三易). They are the entry point for understanding the whole system — and the deepest philosophical difference from tarot.
Bianyi · Change
Everything flows. No hexagram, no line, no situation is static. This is the outermost claim of the book — it is called the Book of Changes, not the Book of Constants.
Buyi · Constancy
Beneath the flow there are unchanging laws — the rhythm of yin and yang, the correspondence of above and below, the patterns of return. Change rides on a frame that does not change; without that frame there would be nothing stable enough for flow to mean anything.
Jianyi · Simplicity
For all its cosmological ambition, the I Ching speaks in the simplest possible signs — two kinds of line, eight trigrams, sixty-four combinations. Complexity arises by stacking simplicity.
The Wilhelm / Baynes Translation and Jung
The I Ching most Western readers encounter is the German translation by **Richard Wilhelm** (1873–1930), rendered into English by **Cary F. Baynes** and published in 1950 by Princeton University Press as Bollingen Series XIX. It remains the most influential English-language edition.
Wilhelm lived in China for many years, and his approach was not a line-by-line rendering but a generous commentary: each hexagram is followed by extended passages drawn from the Wings — the Tuan, the Xiang, the Xici. This structure is what first allowed Western readers to approach the I Ching as a readable philosophical text rather than only as a divination manual.
Carl **Jung** wrote the foreword to the Wilhelm/Baynes edition, and in it he tied the I Ching directly to his concept of **synchronicity**. For Jung, the mechanism of consultation — tossing three coins or dividing yarrow stalks — is not causal; it is a "meaningful coincidence" between the moment of the throw and the psychological state of the questioner. This framework has since been borrowed by tarot readers too, but it is worth noting it is Jung's interpretation, not a doctrine of either the I Ching or tarot itself.
Five Resonances — Not Equivalences
The following five pairings are Lunarcana's interpretive resonances, not a canonical correspondence. A hexagram is a six-line dynamic system; a tarot card is a single pictorial archetype. The granularities differ — what we can honestly say is that the two sometimes land in the same emotional or situational colour-band.
Qian (乾, Heaven over Heaven)
↔ Magician · SunPure yang · all six lines solid · creation, initiative
Qian's image is of "heaven in motion; the noble person strengthens ceaselessly" — pure yang is unimpeded creative force, though with the built-in warning of the top line, "the dragon that flies too high has cause for regret". That sense of "the full toolkit in hand, a clear intent in mind" resonates with the Magician's concentrated will and the Sun's unshielded manifestation.
Kun (坤, Earth over Earth)
↔ Empress · High PriestessPure yin · all six lines broken · receptivity, carrying
Kun's image is of earth as the bearer of all things — pure yin is not passivity but the capacity to hold, to nourish, to make room. The Empress's outward fruitfulness and the High Priestess's inward knowing touch two different sides of Kun: one grows into the world, the other rests deeper inside it.
Zhun (屯, Water over Thunder)
↔ 3 of Wands · 5 of CupsThe difficulty of beginnings · thunder pressed below water
Zhun is the struggle of something trying to be born — a seed pushing through packed earth. It carries both the 3 of Wands' "I see the distance but have not yet crossed it" and the 5 of Cups' "something has already been spent". The quiet teaching of Zhun is that beginnings are never purely exciting; they always contain friction.
Weiji (未济, Fire over Water)
↔ Fool · WorldBefore completion · fire above water · near-fullness, not yet arrived
The Zhouyi opens with Qian and closes not with 既濟 (Jiji, "after completion") but with 未濟 (Weiji, "before completion"). That editorial choice is a philosophical statement in itself — the cycle never truly closes. The Fool (blank beginning) and the World (full closure) are likewise wrapped into each other in the Major Arcana. Both systems are saying the same thing: after fullness, another beginning.
Tai (泰, Earth over Heaven)
↔ Lovers · StarHarmony · earth above, heaven below · the two meet in the middle
Tai's image looks paradoxical — the heavy earth placed above the light heaven — but that is the hexagram's whole point: only when earth sinks and heaven rises do they meet and exchange. The Lovers' meeting between two parties and the Star's clear channel between high and low share this quality of "harmony in flow".
Three Example Questions
Each of the three questions below is given with an example hexagram and an example three-card draw, to show how the two systems ask differently of the same situation.
⚠ Note: These three pairings are examples, not real divination results. An actual consultation requires you to toss coins or divide yarrow stalks, or to draw cards in Lunarcana — the answer belongs to that specific moment, not to a copy on a teaching page.
· Example One · Should I take this new job? ·
A concrete choice — you want to see both "the current situation" and "the direction of the trend".
Example hexagram: Xu 需 (Water over Heaven) — "the wisdom of waiting", difficulty ahead but not a closed path.
Example tarot spread: Two of Pentacles (balancing) · Seven of Pentacles (patience) · The Hermit (inward review)
The I Ching view warns there is risk ahead but no dead-end — the lesson is to wait for the right window rather than force the move. The three tarot cards unpack that "waiting" into concrete psychological steps: weigh the balance, let things ripen, check inward. The two views are complementary — the hexagram names the shape of the situation, the cards name what to do within it.
· Example Two · A relationship has gone silent — what now? ·
A stuck relationship — you want to see how the energy is flowing between the two of you.
Example hexagram: Pi 否 (Heaven over Earth) — non-communication, above and below refusing to meet.
Example tarot spread: Five of Swords (a clash left unresolved) · The Moon (unspoken feeling) · Temperance (gentle blending)
Pi describes a structural problem — it is not that one party is at fault but that the positions have drifted out of contact. The Five of Swords and the Moon fill in the specific tensions hidden inside that silence; Temperance points the way out, through dilution and patience. The hexagram says why it is stuck; the cards show how to loosen it.
· Example Three · I am incubating a creative project — when do I start? ·
A question about timing — now, later, or still waiting.
Example hexagram: Zhun 屯 (Water over Thunder) — the difficulty of beginnings, thunder wanting to break out but water still covering it.
Example tarot spread: Ace of Wands (the spark) · The Hanged Man (a held pause) · 3 of Wands (looking into the distance)
Zhun says the momentum is there but the moment to break ground has not yet arrived. That state — "energy ready, window not open" — maps almost line for line onto Ace of Wands (spark lit) + Hanged Man (conscious pause) + 3 of Wands (watching for the wind). Both systems are saying the same thing in two languages: beginning is not always best begun early; there is a ripeness to timing.
The Lunarcana Stance
The I Ching and tarot are not the same system and do not need to be forced into alignment. The I Ching excels at dynamics — the rise and fall of a situation, the direction of a trend. Tarot excels at symbolism — the psychological texture of an archetype, the colour of a feeling. You can use only one, or use both on different kinds of question. What matters is not picking a side; it is knowing, before you ask, what shape of answer you are after.