The 10 Wings of the I Ching: Understanding the Appendices

The I Ching you read today — hexagrams plus a small library of commentary — is a two-part construction. The old core is the 64 hexagram texts from the Zhou dynasty; wrapped around it are ten essays of commentary that turned a divination manual into the “Classic of Changes” studied by every educated East Asian for two millennia. Those ten essays are the Ten Wings (十翼, Shi Yi). This guide explains what each Wing is, who wrote them, how they changed the book, and how to read them without getting lost.

Why “Wings”?

The metaphor is exact: the old hexagram texts are the body; the ten commentaries are the wings that let it fly. Without the Wings, the Zhouyi is a laconic omen list — superb, but cryptic. With them, it becomes a coherent cosmology, an ethics, and a manual of statecraft. Chinese tradition said it plainly: the Changes without the Wings is like a body without limbs. The honorific title “Yijing” itself — the Classic of Changes — is arguably a product of this commentary culture: texts became “classics” by acquiring the commentary apparatus that schools built around them.

Who Wrote the Ten Wings?

Tradition gives the authorship to Confucius (551–479 BCE), following the early historians’ claim that in his later years “he delighted in the Changes” and wrote commentaries on it. Modern scholarship, built on philology and the archaeological finds of the last century, distributes the authorship across the Warring States and early Han periods (roughly the 4th to 2nd centuries BCE), from several strands of the Confucian school — with the Great Commentary likely the latest and most philosophical. The attribution question matters for history, not for practice: the Wings cohere into a single interpretive voice regardless of whose hands held the brush.

The Ten, One by One

The Wings are conventionally numbered Tuan 1–2, Daxiang 1–2, Xiaoxiang 1–2 (each in Upper and Lower halves matching the two canons of hexagrams), then Wenyan, Xugua, Shuogua, and Zagua:

The Great Commentary (Dazhuan, part of the Xici wings included in most numbering schemes as Wings within 5–6 or as separate essays) deserves its own headline: it contains the famous formulation — “In change there is the Great Primal Beginning” — the yin-yang cosmology, the theory of the divination act itself (“the number of the Great Expansion makes fifty”), and lines that Western philosophy departments now assign alongside Heraclitus.

How the Wings Changed the Book

1. From omen to ethic

The Zhouyi’s judgments sometimes read as bald predictions. The Wings reframe every outcome as a response to conduct: good fortune follows rightness of position and timing, misfortune follows excess and mistiming. The oracle becomes a mirror rather than a sentence — the interpretive move that makes the book morally serious.

2. The invention of the “superior man”

The Great Images append to every hexagram a prescription beginning “Thus the superior man…” — cultivating character as the stable response to any circumstance. Waiting? “The superior man eats and drinks, is glad and of good cheer.” Standstill? “The superior man withdraws into his inner worth.” This layer, more than any other, is why the book reads as wisdom literature. You can see the pattern in action in the hexagram guides: Qian, Tai, Pi.

3. Structural explanation

The Tuan commentary teaches readers to derive meanings from structure — why yang-below-yin is Peace and its inverse Standstill; why the fifth place is the ruler’s. The positional grammar that modern interpreters rely on (correctness, correspondence, centrality — mapped in The Structure of the I Ching) is largely the Tuan and Small Images teaching it.

4. A cosmology of change

The Great Commentary universalizes the book: change is not a topic the text discusses, it is the medium the text performs. Its famous sequence — “that which is, cannot be fully named; movement and rest have their laws” — laid the groundwork for both Neo-Confucian metaphysics and Daoist appropriation.

Reading the Wings Without Getting Lost

Practical counsel for a first pass:

1. Start with the Great Images. They are short, self-contained, and immediately applicable. Read one hexagram’s image a day alongside its judgment.
2. Use the Shuogua (trigram discussion) as a reference card. It is the fastest way to internalize the eight trigrams — the vocabulary underlying all 64 hexagrams.
3. Save the Great Commentary for later. It is the book’s philosophy at full altitude; it lands better after you’ve cast and read for a few months.
4. Know the voice shifts. When your translation suddenly turns homiletic (“Thus the superior man…”), you are in a Wing. When it turns lapidary and strange (“Nine at the beginning: hidden dragon. Do not act”), you are in the core text. The seams are the book’s layers made audible.

For the historical arc of how this two-thousand-year reading culture traveled from Zhou court scribes to Jung’s study, see I Ching Through History; for the Wing that turned the oracle toward depth psychology, I Ching and Carl Jung.

Frequently Asked Questions

Did Confucius really write the Wings?

Almost certainly not all of them, and possibly none in the literal sense — the attribution is earliest-attested centuries after his death, and the linguistic evidence points to Warring States authorship. But the tradition’s instinct is not baseless: the Wings do voice a recognizably Confucian ethic. Read them as the school of Confucius rather than the man.

Can I practice the I Ching without the Wings?

Yes — the Zhouyi stands alone, and purists enjoy its starkness. But you’d be skipping the layer that made the book durably useful; the Images in particular are the most quotable, applicable sentences in the whole corpus.

Why do hexagrams 1 and 2 get special treatment?

The Wenyan — the only Wing confined to two hexagrams — gives Qian (pure yang) and Kun (pure yin) extended essays, because they are the generative poles from which the other 62 are mixed. Master those two and the system’s logic follows; see Hexagram 1 and Hexagram 2.

Do all translations include the Wings?

Most integrate the Tuan and Image commentaries into the hexagram text (sometimes with confusing seamlessness). The full set — including the Great Commentary — is complete in Wilhelm/Baynes and in scholarly editions like Lynn’s The Classic of Changes. Check a translation’s table of contents before buying if the Wings matter to you.

Related: the structural grammar the Wings teach in The Structure of the I Ching; interpreting the core text itself in Understanding Lines and Judgments.