The name 名
Gé 革 originally means a hide stripped of its hair: raw skin treated until its nature is wholly changed. Hence it comes to mean transformation and replacement. The Miscellaneous Notes say simply, “Gé casts off the old.”
The image 象
Lake 兌 above, Fire 離 below: water over flame, each quenching the other; they cannot coexist for long, and something must give. The Tuan adds a human image: the middle daughter (Fire) and the youngest (Lake) under one roof, each bound for a different household, their aims never quite aligned. Inner Fire is clarity and culture, outer Lake is gladness: good change is done openly and wins glad assent.
Layers of images 層
A gua can be read on several levels at once: the trigrams as members of a family (father, mother, eldest to youngest sons and daughters), the six lines as ranks in an organisation (from newcomer to ruler), and as forces of nature and animals. Each extra level adds meaning to the line texts.
Read as a family
Gé uses the same two sisters as Kuí: Lí the middle daughter and Duì the youngest. In Kuí the elder sister is on top; fire rises and the lake sinks, and the two drift apart into separate lives. Gé puts the younger sister on top: water above, fire below, pressing straight against each other with no way to avoid it. So Kuí is separation, while Gé is change that can no longer be put off. Think of two grown sisters still sharing the family home: either one moves out, or they sit down and rewrite the house rules.
Line 1, “bound fast with the hide of a yellow ox”: the line belongs to the lower Lí. Lí is the middle daughter, and her central yin line comes from Kūn, the cow, whose colour is yellow, the colour of the centre. Change has barely begun: wrap yourself in the toughest hide and do not move yet.
Line 3, “to march is ominous; persisting is dangerous; when talk of change has gone round three times, there is trust”: the third place tops the lower trigram, the exposed middle manager most tempted to rush. Talk the reform through three times, act once people believe in it; charging ahead is risky even if you are right.
Line 4, “regret vanishes; with trust the mandate is changed; good fortune”: lines 2–4 form a nuclear Xùn, wind and command; lines 3–5 form a nuclear Qián, heaven. Heaven over command is the mandate of heaven. Line 4 stands where the two meet and has just crossed into the upper trigram, so this is the line that can change the mandate.
Line 5, “the great person changes like a tiger,” and the top line, “the noble one changes like a leopard; the petty change their faces”: the upper Duì sits in the west on the later-heaven compass, the quarter of the White Tiger. A tiger’s new autumn coat is bold and obvious; a leopard’s markings are finer. Change at the top must be as plain to see as a tiger’s stripes, convincing without any need to divine; ordinary people at least change their outward manner.
Turn Gé upside down and you get Dǐng, the cauldron. The Za Gua says Gé removes the old and Dǐng takes up the new. Gé clears away; Dǐng cooks the new order and serves it. When you draw Gé, ask the next question too: once the old is gone, what goes into the pot?
Gé’s nuclear trigrams are Xùn below and Qián above, which make Gòu, the unexpected meeting, where a single yin line quietly appears at the bottom. That is often the inner process of change: one unforeseen event, one small new force, sets the whole situation turning, and it grows quickly.
In sequence 序
井道不可不革，故受之以革。
The Sequence says: “The way of the well must be renewed; hence Revolution follows.” A well in long use silts up and must be dredged and renewed from time to time. Institutions and habits are wells too: in time they accumulate faults, and so comes Gé 革.
The judgment 辭
革：已日乃孚，元亨。利貞。悔亡。
Only on the 已 day is there trust; then: beginning, passage, fitness, steadfastness; regret vanishes. 已日 is usually read as 己日, the sixth of the ten heavenly stems: the first of the second half, meaning the midpoint has passed and more than half the people trust you; only then may change begin. And since a 己 day comes only once in ten, change must not be hurried. Every reform has its losers, so regret is unavoidable; done rightly, it fades. The four virtues of Qián 乾 appear here to mark an entirely new beginning.
Commentary on the judgment 彖
彖曰：革，水火相息，二女同居，其志不相得，曰革。已日乃孚；革而信也。文明以說，大亨以正，革而當，其悔乃亡。天地革而四時成，湯武革命，順乎天而應乎人，革之時義大矣哉！
The Tuan first gives the cause: water and fire extinguish each other, two daughters under one roof whose aims do not agree. Then the method: change must be trusted; clear and glad, greatly penetrating through what is right; when change is fitting, regret disappears. Then it rises from nature to history: “Heaven and earth change, and the four seasons are completed; Tang and Wu changed the Mandate, in accord with Heaven and in answer to the people.” Legitimate change follows Heaven and answers the people; hence, “Great indeed is the timing and meaning of Revolution!”
The great image 象
象曰：澤中有火，革；君子以治歷明時。
“Fire within the lake: Revolution. The noble person sets the calendar in order and makes the seasons clear.” Ordering the calendar attends to Heaven's timing; clarifying the seasons arranges human affairs. Change must serve both at once. The turning of the seasons is the greatest change of all, and one must first understand its rhythm.
The six lines 爻
Ruling line 六二 repeats the Judgment's “已 day” and, central and correct, answers 九五: it is the ruling line. 九五, the great person who changes like a tiger, central and correct in the seat of honor, is the one who brings the change to completion.
The path of the six lines, bottom to top
At Line 1 the time has not come: bind yourself in ox-hide and stay still. Line 2 is central and correct and answers Line 5; when the day for change arrives, it can set out. Line 3, at the hot top of the lower fire, is tempted to rush, and rushing is dangerous: keep talking the reform through until people trust it. Line 4 crosses into the upper trigram; regret falls away, and the mandate itself can now be changed. Line 5 is the great person’s tiger change, bright and evident, trusted without divination. The top line is the tail of the revolution: the noble refine, ordinary people adjust their faces, and the right move is to stop pushing and consolidate.
初九鞏用黃牛之革。
In plain words
Bound fast with the hide of a yellow ox.
Close reading
Yang in a yang place and correct, but only just entering the hexagram, and with 九四 also yang there is no partner and no outside help. The yellow ox comes from Fire, whose central line derives from Earth: ox, and yellow. Yellow-ox hide is the toughest binding: one must not move, nor show one's hand. The Small Image: “one may not act.” Like the hidden dragon of Qián 乾, the time is not yet; premature action would be crushed at birth.
One level deeper
Line 1, “bound fast with the hide of a yellow ox”: the line belongs to the lower Lí. Lí is the middle daughter, and her central yin line comes from Kūn, the cow, whose colour is yellow, the colour of the centre. Change has barely begun: wrap yourself in the toughest hide and do not move yet.
If you drew this line
The urge to change has arisen, but neither the time nor the support has come. Hold still, keep your counsel, and don't announce it.
King Wen Imprisoned at Youli
Ji Chang, Lord of the West, was known for virtue, and many lords turned to him. Marquis Hu of Chong slandered him to King Zhou, warning that his accumulated goodness boded ill for Shang, and the king imprisoned him at Youli. His ministers, Hong Yao and others, gathered beautiful women, fine horses and treasures and presented them through the king's favorite; the king, delighted, set him free. At this stage Zhou was far too weak to challenge Shang, and he could only endure and keep his edge hidden. “Bound fast with yellow ox-hide” is just this: holding oneself tightly in check until the time comes.
六二已日乃革之，征吉，无咎。
In plain words
On the 已 day, carry out the change. Advancing brings good fortune; no blame.
Close reading
Yin in a yin place, central and correct, in resonance with 九五, so advancing is auspicious. It is the center of Fire, which is brightness, and under the na jia correspondences Fire takes the stem 己, so this is precisely the 己 day, the ripe moment. Note the word 乃, “only then”: one acts once everything worth waiting for has been waited for. The Small Image: “action meets with excellence.”
If you drew this line
Long preparation has ripened; conditions and people are aligned. You may move the change forward, steadily.
九三征凶，貞厲，革言三就，有孚。
In plain words
Advancing brings misfortune; holding still is perilous. When the call for change has been confirmed three times, there is trust.
Close reading
Yang in a yang place, correct but past the center, at the seam between the trigrams where water and fire collide. Forward, 九四 and 九五 block the way, and haste is fatal; standing still is no better, for in a time of revolution one cannot simply stop. Its resonance with 上六 gives it an outlet. “Three confirmations” means the case has been tested again and again and opinion has matured. The Small Image: “Where else is there to go?” Once confirmed three times, it is time to act.
One level deeper
Line 3, “to march is ominous; persisting is dangerous; when talk of change has gone round three times, there is trust”: the third place tops the lower trigram, the exposed middle manager most tempted to rush. Talk the reform through three times, act once people believe in it; charging ahead is risky even if you are right.
If you drew this line
A narrow pass between moving and waiting. Don't be swept along by noise, and don't let hesitation waste the moment; test the case widely and move once trust is real.
The Review of Troops at Mengjin
After King Wu succeeded his father, he marched east to Mengjin to review his army. Eight hundred lords arrived unbidden, all saying, “Zhou can be attacked.” King Wu replied, “You do not yet know Heaven's Mandate; it is not yet possible,” and led his troops home. Two years later, King Zhou had grown more tyrannical still, killing Bi Gan and imprisoning Jizi, and only then did King Wu march east. A crowd's clamour is not the moment; the leader must judge whether the whole realm and the people's hearts have truly turned. Here is the fine line between 九三's “advancing brings misfortune” and its “confirmed three times.”
九四悔亡，有孚改命，吉。
In plain words
Regret vanishes. With trust, the Mandate is changed: good fortune.
Close reading
Yang in a yin place, out of position and unanswered by 初九; regret would be natural. But it has crossed the line between the trigrams into the stage of real change, so regret vanishes. Below it lies nuclear Wind, which is command; above it nuclear Heaven: Heaven's command, the Mandate, which here may be changed. The Small Image: “its aim is trusted.” People believe its purpose serves them, and so the change is auspicious. Lines three, four and five all speak of trust: sincerity is the root of revolution.
One level deeper
Line 4, “regret vanishes; with trust the mandate is changed; good fortune”: lines 2–4 form a nuclear Xùn, wind and command; lines 3–5 form a nuclear Qián, heaven. Heaven over command is the mandate of heaven. Line 4 stands where the two meet and has just crossed into the upper trigram, so this is the line that can change the mandate.
If you drew this line
The conditions for change are in place, and you can commit to a new direction. What matters is that others trust your motives, and that you keep your word.
九五大人虎變，未占有孚。
In plain words
The great person changes like a tiger. Even before divining, there is trust.
Close reading
Yang in a yang place, central and correct in the seat of honor: virtue with position, hence “the great person.” Lake lies in the west, the quarter of the White Tiger, hence the tiger, whose coat renews itself with vivid stripes. It corresponds with 六二, which lies in Fire, the tortoise whose shell was used in divination; so closely attuned are they that trust exists before any oracle is consulted. When a dynasty changed, so did its colors: Zhou honored red, and everything looked new. The Small Image: “its pattern is brilliant.”
One level deeper
Line 5, “the great person changes like a tiger,” and the top line, “the noble one changes like a leopard; the petty change their faces”: the upper Duì sits in the west on the later-heaven compass, the quarter of the White Tiger. A tiger’s new autumn coat is bold and obvious; a leopard’s markings are finer. Change at the top must be as plain to see as a tiger’s stripes, convincing without any need to divine; ordinary people at least change their outward manner.
If you drew this line
Your past conduct has already earned trust. You can carry the change forward openly and confidently, without endless second-guessing.
上六君子豹變，小人革面，征凶，居貞吉。
In plain words
The noble person changes like a leopard; the petty person changes his face. To advance brings misfortune; to stay put and be steadfast brings good fortune.
Close reading
Yin in a yin place, correct, answering 九三, but at the hexagram's end. 九五 holds rank and is called the great person; 上六, without the seat of honor, is the noble person. Tiger and leopard are kin, the leopard's coat a shade less splendid, so the one changes like a tiger, the other like a leopard; “its pattern is rich.” The petty may not be convinced at heart, but at least they comply outwardly: they change their faces, “following the ruler in compliance.” Chinese speaks of washing the heart and changing the face; the petty often manage only the second. Right after a revolution, stability matters most; to push on would leave Gé and invite disorder.
If you drew this line
The change is done; now consolidate. Don't launch another upheaval on the back of success; let people and order settle first.
Stories 典
After Muye: How King Wu Won Trust
Two years after the review at Mengjin, King Wu marched east with three hundred chariots and three thousand elite guards, joined the allied lords and swore his army to battle at Muye. King Zhou's forces had no will to fight and turned their weapons around; Zhou fled to the Deer Terrace and burned himself to death. Entering the Shang capital, King Wu at once had the treasures of the Deer Terrace distributed, opened the granaries at Juqiao to relieve the poor, freed the imprisoned Jizi, raised a mound over Bi Gan's grave and honored the gate of the worthy Shang Rong. To make people who had belonged to Shang trust Zhou took more than a victory; it took promises kept. That is why three successive lines of Gé speak of trust.
Mencius: I Have Heard of Punishing the Fellow Zhou
King Xuan of Qi asked Mencius whether it was true that Tang banished Jie and King Wu struck down Zhou. The records say so, Mencius replied. Then may a subject kill his ruler? Mencius answered: one who injures humaneness is a “thief,” one who injures rightness a “ruffian”; such a man is merely “a fellow.” I have heard of the punishment of the fellow Zhou; I have not heard of a ruler being murdered. For Mencius a throne is legitimate only while its holder fulfils the ruler's way; one who has lost the people is no longer a ruler. This is the spirit of the Tuan's “Tang and Wu changed the Mandate, in accord with Heaven and in answer to the people”: revolution rests not on force but on Heaven's Mandate and the people's hearts.
Insight 悟
Gé lays out change as a disciplined sequence: hold still, prepare, test the case again and again, change the Mandate, transform like a tiger, then settle and consolidate. At its heart is trust; reform without it breeds suspicion and turmoil. Nor is change merely overthrow: it must accord with Heaven and answer the people, with a ground beyond itself and the people's real support. Personal change is the same. When inner clarity shows outwardly as pattern, that is the tiger's or the leopard's change; altering the surface while the heart stays the same is only changing one's face.