Hexagram 49 · King Wen order

No. 49 Revolution

泽火革 · Gé · Fire under Lake

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“Change has its day. Wait for the day, then do the whole of it.”

Lower trigram ☲ Fire 离 — clarity & brightness

Upper trigram ☱ Lake 兑 — open exchange & shared ease

Trigram: a three-line symbolic figure that forms one half of an I Ching hexagram.


Introduction

In the lake there is fire: one element working on the other until it gives way. Revolution pictures a change that has ripened.

In practice, this names a stretch where something has to be replaced rather than repaired. Timing decides whether the change holds.

The judgement

“Revolution. On your own day you are believed. Success. Remorse disappears.”

In plain words: the change works once its day has come, and regret falls away after it.

Move too early and people argue you out of it.

Core themes

  1. The change itself is right. The day it is done decides everything.
  2. Being believed tends to matter more than being clever.
  3. Half-measures tend to leave the old thing alive underneath.

Line-by-line overview

Six lines, read bottom to top — matching the figure above.

Each line describes one stage in an evolving situation. Line 1 marks the earliest, foundational beginning; line 6 shows where the pattern has run its course. Open a line to read it.

Line 1 初九
Bound with the hide of a yellow cow

Nothing moves yet. That is not a failure here.

The old image is ox-hide, which holds fast rather than giving.

Holding still at the start is not the same as doing nothing forever.

Line 2 六二
On the appointed day the change is made — good, no blame

Here the day has come and the old line says acting now brings good.

Nothing about it carries fault.

Waiting for the right moment tends to be what removes the argument later.

Line 3 九三
Going ahead brings difficulty — talk first, then act

At this level, pushing early brings trouble, and the old line calls persistence risky.

It adds that once the case has been argued through three times, the people consent.

Discussion done first tends to buy later consent.

Line 4 九四
Remorse disappears — people believe him

Here regret goes because trust has arrived.

The old line says changing the whole arrangement brings good.

Credibility is the real currency in any overhaul.

Line 5 九五
The great man changes like a tiger

At the centre the change is unmistakable and nobody needs to check it.

The old line says he is believed before he consults anything.

Clear change tends to settle people faster than explained change.

Line 6 上六
The panther changes; small people change only their faces

At the top the change reaches everyone. Depth differs.

Setting out is said to bring difficulty; staying steady brings good.

Changing the surface alone tends to leave everything underneath exactly as it was.

Summary

Read as a whole, this figure asks you to check whether the day for this has come. Argue the case out first, make the change complete, and let conduct do the persuading.


Short reads from the blog. A changing line is a line that may shift as a situation moves.

If you would like to browse all 64 hexagrams, visit All 64 Hexagrams.

If you would like to learn about static hexagrams and the interpretation rules for changing lines within I-Ching, please visit our general guide: Understanding Changing & Static Lines.

How to use this page. Read the figure, then the judgement, then the lines in order. A reading ends with an observation about yourself — never with a verdict about what will happen.