Wen Wang Gua (Liu Yao): Reading the I Ching with Six Lines
The I Ching gives a hexagram and a short classical judgement. That is enough for a reader who wants to sit with a text, and not always enough for a practitioner who has been asked a specific question with a specific stake. Wen Wang Gua (文王卦) is the method that fills the gap: it uses the same sixty-four hexagrams but attaches a stem, a branch and an element to every line, and then reads the figure the way a BaZi chart is read — by relation and by strength, not by commentary.
The method is also called Liu Yao (六爻), "six lines", and the technical name for its apparatus is najia (納甲), the "receiving of stems". It is the working divination of the Chinese tradition: the form most often used when the question is concrete, and the one most often met in practice abroad under one of its two names. The text itself is covered in The I Ching; this article is about the technique built on it.
1. What the method is
1.1 The same hexagram, read differently
Both approaches begin with the same cast, made the same way. Then they part. A textual reading asks what the hexagram as a whole, and any changing lines, say about the situation; it leans on the received judgements and the commentarial tradition. Wen Wang Gua ignores the written judgement almost entirely and reads the figure as a structure: which element sits on which line, how those elements relate to the palace the hexagram belongs to, which line carries the subject of the question, and which lines are moving.
1.2 What has to be known before the cast
The method expects the practitioner to have three things in hand: the stems, the branches and their elements; the assignment of the sixty-four hexagrams to the eight palaces; and the naming of the relations between elements. All three are shared with other systems — the stems with BaZi and the calendar, the elements with the Five Elements that underlie the whole tradition. Wen Wang Gua does not invent a new alphabet; it applies the existing one to a question.
The important shift is from text to structure. In a textual reading, the hexagram's name and judgement are the substance. In Wen Wang Gua they are a label: what is read is the relation between lines, the palace they belong to, and the strength of the line that stands for the thing asked about.
2. Making the cast
2.1 The three coins
The usual method is three coins, thrown six times, once for each line. Heads counts as three and tails as two, so each throw totals six, seven, eight or nine. The lines are written from the bottom upward, which is the order in which a hexagram is always read. Nothing about the apparatus is unusual; the same cast serves both this method and the textual one.
2.2 The yarrow alternative
Yarrow stalks, the older procedure, produce the same four results by a slower route and are preferred by some practitioners for that reason. The choice of instrument does not change the technique that follows — the cast always yields six lines, each in one of four states.
2.3 The four states of a line
- Six — three tails — is old yin, a broken line that will change.
- Seven — two tails and a head — is young yang, a solid line that stays.
- Eight — one tail and two heads — is young yin, a broken line that stays.
- Nine — three heads — is old yang, a solid line that will change.
Old and young matter here more than in a textual reading. A moving line is not only a point of change in the situation; it is a line whose element and branch are read twice — once in the hexagram as cast, and once after it transforms.
2.4 Assembling the hexagram
The six lines are written in order and the hexagram is identified: lower trigram below, upper trigram above. The hexagram's identity gives two things at once — its place among the sixty-four, and its place in one of the eight palaces, which is the next step and the one that most distinguishes the method.
3. The eight palaces of Jing Fang
The classical arrangement attributed to Jing Fang (京房) sorts all sixty-four hexagrams into eight palaces, one for each of the eight trigrams. Every hexagram therefore has a home palace, and every palace carries the element of its trigram: the palace of Qian is Metal and so is the palace of Dui, the palace of Kan is Water, the palaces of Zhen and Xun are Wood, the palace of Li is Fire, and the palaces of Kun and Gen are Earth.
3.1 Why the palace matters
The palace supplies the point of view. In the same way that a BaZi chart is read from its Day Master, a Wen Wang Gua chart is read from the element of its palace: every line on the chart is measured by how its element stands to that one. Without the palace there is no way to say what a line's element means, because "Metal" on its own is neither help nor harm.
3.2 The palace as a family
Each palace also contains eight hexagrams in a fixed sequence of transformations, and practitioners use that sequence to read how a situation may evolve from its present figure into a related one. The sequence is the part of the method most often learned by table rather than by derivation, and lineages differ over how much weight to give it.
4. The Six Relatives
With the palace element fixed, every line is given a relative — one of the household roles through which the chart speaks. The relations are not assigned by the hexagram's story but by the Five Element relation between the line and the palace, and the classical formulation is compact.
| The line's element … | Relative | What it stands for |
|---|---|---|
| generates the palace element | Parent (父母) | support, protection, documents, the source of things |
| is the same as the palace | Sibling (兄弟) | equals, peers, kin, competitors |
| is generated by the palace | Child (子孫) | what the subject produces, descendants, relief from trouble |
| is controlled by the palace | Wealth (妻財) | property, income, resources — literally "wife and wealth" |
| controls the palace element | Official or Ghost (官鬼) | authority, office, illness, threat, the opposing party |
4.1 Reading the relatives as a set
A chart is rarely read line by line. The practitioner looks for which relative appears where, how many lines carry it, and whether the lines bearing it are strong or weak — because a relative present on several lines is a different statement from one appearing once. The relatives are also what makes the method suitable for concrete questions: a question about money, a job, a dispute or an illness each has a natural relative that carries the subject.
5. The Six Spirits
In addition to the relatives, each line receives one of six spirits — Azure Dragon, Vermilion Bird, Gou Chen, Teng She, White Tiger and Dark Warrior — in the classical order. The starting spirit is fixed by the day stem of the cast, so the six always appear in sequence, one per line. The spirits do not change the elemental analysis; they colour it, adding a note about the manner of a thing rather than its matter, and different lineages give them different weight.
6. The moving line and its transformation
A line cast as old yin or old yang moves, and moving is the second half of the method. When a line moves, it inverts, and the six positions produce a second hexagram — the transformed figure, belonging to a palace of its own. The practitioner then reads the moving line twice: as it stands in the original chart, with its relative and strength, and as it becomes something else after the change.
This is where a Wen Wang Gua chart describes a situation rather than a snapshot. The moving line marks the point under pressure; the transformed chart says what that point is turning into; and the relation between the two often supplies the answer more directly than any single line.
7. The useful spirit
Before any of the analysis, one relative is chosen as the useful spirit (用神): the line that stands for whatever the question is about. A question about a house looks to the relevant relative, a question about an illness to another, a question about an absent person to another again. Choosing it well is the whole art, and choosing it badly is why two practitioners can read the same chart and reach opposite conclusions.
The useful spirit is then judged against everything else on the chart: whether it is strong or weak, whether it is supported or attacked by neighbouring lines, whether it moves, and how it relates to the line standing for the person asking. The rest of the chart is context for that one line.
8. Strength by month and day
A line is not judged in isolation. Its branch is read against the month and the day of the cast, which supply the season and the immediate moment, and the classical vocabulary for the result is the set of states known as wang, xiang, xiu and qiu (旺相休囚) — prosperous, supported, resting or imprisoned. Where a line sits in that scale decides whether its relative is capable of doing anything.
The practical consequence is that the month and day are not decoration. They can turn a well-placed useful spirit into a weak one, or a minor line into the one that carries the answer, which is why the date and time of the cast are recorded as carefully as the coins.
9. Where the tradition divides
It would be dishonest to present this as one settled procedure. There are several lines of transmission, and they differ on matters that matter: how the useful spirit is chosen when a question touches two subjects; how much weight the six spirits carry; whether the palace sequence is read at all; how many of the secondary markers are applied. Two practitioners trained in different lineages will not always agree on a chart, and the disagreement is usually about method rather than about the reading.
The safe position is the one the classical sources themselves suggest: learn one transmission thoroughly, know that others exist, and say which one you are using. Where this article gives a formulation — the derivation of the relatives, the order of the spirits — it gives the common one, marked here as in the received tradition where variants are known.
10. What this method is not
It is not a moral text. The I Ching's judgements are full of advice about conduct; Wen Wang Gua uses them as labels and reads structure instead, which is why it can be learned and applied without any interest in the philosophy of the book. It is also not a replacement for the I Ching — the text and its commentarial tradition stand on their own, and a reader who wants them should go to The I Ching rather than to this technique.
Nor is it a different art from BaZi. The two share the stems, the branches and the elements, and a practitioner who reads charts will recognise the vocabulary at once; the difference is what is being read — a life from birth data, against a question from a cast. If you want the chart side, the BaZi section is the place to start.
What the method claims is modest and useful: that a question, sincerely asked at a recorded moment, produces a figure whose internal relations can be examined. What it does not claim is that the answer removes the decision. The chart describes the ground; the person still chooses what to do on it.
11. Frequently Asked Questions
Do I need to memorise the eight palaces before I can read a chart?
Practically, yes — the palace gives the element every other line is measured against, so without it there is nothing to compare. The assignment is normally learned as a table of the sixty-four hexagrams in eight rows, and most practitioners know where a hexagram belongs before they remember what its judgement says.
What if my question does not fit any of the six relatives?
Every classical category of question is mapped onto one of them, so the usual problem is not a missing relative but a question that contains two questions at once. Ask one thing. If two subjects genuinely matter — a person and a sum of money, say — the tradition treats them as separate charts rather than one chart with two useful spirits.
Can I read a hexagram I obtained from the I Ching text?
You need more than the figure. Wen Wang Gua reads stems, branches, elements and relatives, and those are attached by the method, not by the text; the same hexagram reached by the same cast is read the same way in both approaches, which is why the instrument and the recording of the moment are the same. What differs is what the practitioner looks at afterwards.
How does a moving line change the reading?
It marks the point of the situation that is actually in motion, and it produces a second hexagram describing where that movement leads. The moving line is read in both figures — before and after the change — and the relation between them is often the most informative part of the chart. A chart with no moving lines is read as a stable situation rather than an unfinished one.
Is Wen Wang Gua the same as BaZi?
No, though they share the stems and branches. BaZi reads a person's life from the four pillars of the birth moment and never asks a question; Wen Wang Gua reads a single question from a cast made at a recorded moment. The vocabulary overlaps almost completely, which is why practitioners of the two arts can read each other's charts, but the inputs and the subjects are different. See the BaZi calculator for the chart side, and the glossary for the terms shared between them.