Changing Lines and the Relating Hexagram, Explained

If the primary hexagram is a photograph of your situation, the changing lines are the parts of the photograph that are blurred with motion. They show where the energy is, where the pressure is building, and where the situation is about to turn into something else. Learning to read them well is the single biggest step from beginner to confident reader.

What makes a line "change"

In the three-coin method each toss totals 6, 7, 8 or 9. The numbers 7 and 8 are young lines: stable, solid (7) or broken (8). The numbers 9 and 6 are old lines. An old line has reached its extreme, and in the logic of the Book of Changes anything at its extreme turns into its opposite:

9, old yang, is solid now and becomes broken.
6, old yin, is broken now and becomes solid.

This is the heart of the book's philosophy. Yang at its peak yields to yin; yin at its depth gives rise to yang. The changing lines are where you see that process happening in your own question.

Why changing lines carry the most weight

Each of the 64 hexagrams has a judgment for the whole figure and six line statements, one for each position. When you receive a hexagram with no changing lines, only the judgment and image apply. When a line is changing, its own statement becomes active — and line statements are much more specific than the judgment. They talk about a particular moment: the hidden dragon, treading on frost, a fox that wets its tail.

So a practical rule: read the changing line texts first, slowly, and expect them to speak most directly to you.

Line positions have meaning too

Positions are counted from the bottom.

Line 1 — the beginning, the foundation, something not yet visible.
Line 2 — the inner centre; often a subordinate or private role, generally favourable.
Line 3 — the threshold between inner and outer; often a place of strain.
Line 4 — entering the outer world; close to authority, needing care.
Line 5 — the outer centre; the ruler's place, usually the strongest line.
Line 6 — the end of the situation, overshooting, or stepping beyond it.

Knowing the position lets you see where in the situation the movement is.

Forming the relating hexagram

Take the primary hexagram, flip every changing line, and keep the rest. The result is the relating hexagram (之卦, zhi gua, sometimes called the "future" or "resulting" hexagram).

Example: you cast Hexagram 1, The Creative, with only the bottom line changing (a 9). Flip it to broken and you get Hexagram 44, Coming to Meet. The reading is: Creative force, at its very beginning, should not yet act (the hidden dragon) — and the situation is moving toward an unexpected encounter.

Read the relating hexagram's judgment as the direction or context of change. Usually you do not read the line statements of the relating hexagram — the changing lines are read in the primary hexagram.

How many changing lines? A traditional guide

What if you get three or five changing lines? The Song-dynasty scholar Zhu Xi set out a widely used convention, summarised here:

Changing lines	What to emphasise
0	The judgment of the primary hexagram
1	That one changing line
2	Both lines, with the upper one as the main voice
3	The judgments of both the primary and relating hexagrams
4	The two unchanged lines, read in the relating hexagram
5	The one unchanged line, read in the relating hexagram
6	For Hexagrams 1 and 2, the special "all lines" text; otherwise the relating hexagram's judgment

You do not have to follow this mechanically. Many modern readers simply read every changing line and look for the thread that connects them. Our result page shows all of them so you can choose your approach.

A practical reading order

Primary judgment and image — the overall situation.
Each changing line, bottom to top — where the movement is.
Relating hexagram — where things are heading.
One sentence — write down, in your own words, what the three together suggest.

Common misunderstandings

"The relating hexagram is my fixed future." It is a direction, not a verdict. The line texts often say if you persist… or no blame — the outcome depends on how you act.

"No changing lines means a weak reading." Not at all. It means the situation is relatively stable, and the judgment applies in full.

"Six changing lines is an error." It is rare (1 in 4,096 with coins) but meaningful: the whole situation is turning over.

Try it

Cast a hexagram and look at the red-marked lines on your result page, or explore how each hexagram's six lines read in the 64-hexagram library. For a full line-by-line example, see our reading of Hexagram 1, Qian.