The use spirit (用神) in Six Lines divination: how to choose the line that answers

In Six Lines (六爻) divination the use spirit (用神, yongshen) is the single line of the hexagram that stands for the matter you asked about: the job, the money, the other person, the document. Everything else in the chart is read in relation to it. Choose it well and the chart becomes a clear picture; choose it badly and you will be reading the right rules about the wrong thing.

This guide covers what the use spirit is, the classic choices for each kind of question, what to do when it appears twice or not at all, and the mistakes beginners make most often.

Where the use spirit comes from

Six Lines does not read the Zhouyi text. Instead it "dresses" the hexagram (裝卦): each line receives a stem and branch by the Najia method, the hexagram is placed in one of the eight palaces, and every line is labelled with one of the six relatives (六親) according to how its element relates to the palace element. There are only five relative types, and each covers a family of things:

• 父母 Parents — the element that produces the palace: parents and elders, teachers, documents, contracts, letters, houses and vehicles, anything that shelters or certifies you.
• 官鬼 Officer — the element that controls the palace: employers, authority, rank and position, pressure and trouble; for a woman, traditionally, the husband or male partner.
• 妻財 Wealth — the element the palace controls: money, goods, income, things you manage; for a man, traditionally, the wife or female partner.
• 子孫 Offspring — the element the palace produces: children, students and younger people, pets, and in the old texts the "spirit of good fortune" that relieves worry.
• 兄弟 Siblings — the same element as the palace: brothers and sisters, friends, colleagues, rivals and competitors.

The full logic of these labels is in the six relatives. Two further lines matter for every question: the 世 (shi) line, which stands for you, and the 應 (ying) line, which stands for the other side; see shi and ying.

The classic choices by type of question

The standard manuals of the Qing period, 《增刪卜易》 and 《卜筮正宗》, give long lists. The core is short:

• Work, career, a job offer, promotion, dealing with an authority — 官鬼.
• Money, income, a deal, goods — 妻財.
• Parents, elders, a teacher; a house, a contract, an application, a letter — 父母.
• An exam — the manuals usually take 父母 for the paper and the study itself; some readers also watch 官鬼 for the ranking or result. Know which part you are asking about.
• Children, students, younger relatives, a pet — 子孫.
• Siblings, friends, peers, a competitor — 兄弟.
• A partner — traditionally 妻財 for a man asking about a woman, 官鬼 for a woman asking about a man. For any couple the 應 line, as "the other party", is a sensible alternative.
• Yourself, your own state, a general question — the 世 line.

Once the use spirit is fixed, three supporting roles follow by the cycle of the five elements: the 原神 (the element that produces it, its source of help), the 忌神 (the element that controls it, its main obstacle) and the 仇神 (the element that controls the 原神, cutting off the help). A use spirit that is weak but receiving a moving 原神 is read very differently from one that is weak and being struck by a moving 忌神.

When the use spirit appears twice, or not at all

Because there are six lines and five relatives, at least one relative appears twice. If both copies are your use spirit, the manuals advise taking the moving one first; if neither moves, the one holding 世 or 應. Beyond that, practitioners differ, and many simply weigh both.

If the relative you need appears in none of the six lines, the tradition looks for it as a hidden spirit (伏神) under one of the lines, taken from the pure hexagram of the same palace. A hidden use spirit is not "no answer"; it says the matter is not yet in view and depends on whether it can come out from under the line that covers it (the 飛神).

How this site's reader chooses it

The in-depth Six Lines reading on our caster follows the Jing Fang Najia school as practised in 《增刪卜易》 and 《卜筮正宗》, and it lets you pick the kind of question before you cast. The mapping is deliberately simple: work goes to 官鬼; money to 妻財; study, home and documents, and parents and family to 父母; children to 子孫; friends and peers to 兄弟; a general question to the 世 line. For relationship questions it asks how you identify: a man's question goes to 妻財, a woman's to 官鬼, and "prefer not to say" uses the 應 line as the other party.

When the relative appears more than once, it prefers a moving line, then a line holding 世 or 應, then the stronger line; a final tie goes to the lower line, which is our own tie-breaker, not a classical rule, so every candidate is shown. When the relative is missing, it takes the strongest hidden spirit of that relative. There is deliberately no health category.

Common mistakes

• Choosing after you cast. Decide the use spirit while you frame the question. If you pick it after seeing the chart, you will drift toward the line that looks best. The same discipline applies to how you ask.
• Using 世 for everything. The 世 line is you. If you ask "will this contract go through", the contract is 父母; your own line only tells you how you stand toward it.
• Mixing up the person and the thing. "Will my manager approve my raise?" can be about the manager (官鬼) or the money (妻財). Pick the one you actually care about.
• Confusing it with BaZi's 用神. The same two characters mean something different in four-pillar astrology, where the "useful god" is the element that balances a day master. The words match; the concepts do not.
• Reading the line text instead. In a Zhouyi reading you read the words of a changing line. In Six Lines the use spirit is judged by element, season, day and moving lines, not by its line text. Both methods are legitimate; mixing them in one reading confuses both.

Putting it into practice

Before you cast, write your question in one sentence and next to it the relative you will treat as the use spirit. After the cast, find that line first. Ask four things in order: is it present or hidden; is it strong or weak in this month and on this day; is it moving, and does it change into something that helps or harms it; and are any moving lines acting on it as 原神 or 忌神. Then look at how it relates to the 世 line. Only after that is it worth reading the rest of the chart.

If you prefer to work with the text of the hexagram rather than its elements, read how to read the I Ching instead; the use spirit belongs to the Six Lines method, not to every way of consulting the book.