Gu · Repairing Decay

Judgment and Plain-Language Notes

Gu: Supreme success. It is beneficial to cross the great river. Three days before the jia day, three days after the jia day.

Commentary on the Judgment: “Decay: the firm above and yielding below; gentle penetration and stopping. Supreme success brings order to all under Heaven. Crossing the great river is beneficial, because there is work to undertake. Three days before jia and three days after: ending gives way to beginning, the movement of Heaven.” Commentary on the Image: “Wind beneath the mountain: Repairing Decay. The noble person rouses the people and nurtures virtue.” The Judgment attributes success to correcting accumulated problems and restoring order. Three days before and after jia show that reform needs time for preparation and review; the Image calls for renewed morale and cultivated virtue. (Zhouyi, Commentaries on the Judgment and the Image; public domain)

Gu has Xun below and Gen above. Wind beneath a mountain scatters vegetation, symbolizing problems accumulated over time. Gu originally means decay requiring repair, yet its judgment promises supreme success and a beneficial river crossing: confronting and repairing decay opens a new beginning. Many lines use repairing a father's decay to discuss inherited problems, requiring sincerity, balance, and acceptance of minor regrets and hardship. Three days before and after jia also call for preparation before reform and follow-up afterward.

The name means accumulated decay, and all six lines address inherited problems. The first warns of danger, the third of small regret, and the fourth of humiliation in advancing: the process is plainly difficult. Yet the judgment's supreme success and beneficial river crossing indicate that willingness to repair can restore progress. Danger and opportunity coexist, hence the rating: Neutral. This is the app's interpretation of the text, not a guarantee of outcomes.

Do: Find the source of accumulated problems, repair in stages, and examine effects before and after. Avoid: Treating only surface symptoms or blaming predecessors for everything.

Understand This Hexagram Through Its Structure

Gen above, Xun below: wind beneath a mountain — the structure of something left too long.

• Name the upper and lower trigram of Gu.
• Explain why wind beneath a mountain reads as accumulated decay.
• Say that swapping the halves turns Repairing What Has Decayed into Gradual Progress.

The lower trigram of Gu is Xun: a broken first line with two solid above. The upper is Gen: two broken lines with a solid one on top. The second, third and sixth lines are solid. Xun is wind and Gen is a mountain, so the image is wind trapped beneath a mountain.

Wind naturally moves; pressed beneath a mountain it cannot disperse. Structurally this reads as what should have been changed never being changed. The problem did not appear suddenly; it comes from a long absence of circulation. The hexagram is about repair, and its point is finding where the flow stopped rather than assigning blame.

A teaching example, not a prediction: a process document untouched for three years, with everyone quietly routing around it and nobody revising it. Gu describes that structure; it does not say the team is careless.

The Six Lines: Original Text and Reflection

Six at the beginning: Repairing the father's decay. Having a son honors the deceased father. No blame; danger, but good fortune in the end.

Commentary on the Image: “Repairing the father's decay: the intention is to carry on the father's work.” Taking responsibility for inherited problems continues the predecessor's undertaking. Though the process is dangerous, right intentions lead to good fortune in the end. (Zhouyi, Commentary on the Image; public domain)

Taking over inherited problems aims to continue rather than reject predecessors, so there is no fault. The process may be dangerous, yet can ultimately turn toward good fortune.

When taking over a role or household task with old problems, explain that you want to carry it forward properly, then address the backlog gradually. A demanding process is normal.

Are you taking this on to prove your predecessor wrong, or to truly put it right?

Nine in the second place: Repairing the mother's decay. Do not persist rigidly.

Commentary on the Image: “Repairing the mother's decay attains the middle way.” Do not insist rigidly when handling inherited maternal problems. The emphasis is a moderate, gentle approach. (Zhouyi, Commentary on the Image; public domain)

Some accumulated problems involve feelings and relationships, and cannot be resolved through unyielding confrontation. “Do not persist” reminds you to use a balanced and gentle approach.

When changing habits involving elders' or longtime colleagues' feelings, slow down, preserve dignity, and adjust in stages rather than overturning everything by force.

Is the real resistance about the method, or about feelings within the relationship that have not been considered?

Nine in the third place: Repairing the father's decay. Small regret, but no great blame.

Commentary on the Image: “Repairing the father's decay: in the end, no blame.” Slightly excessive firmness in correcting inherited problems causes minor regret. Yet the Image finds no blame ultimately, allowing small imperfections in a process with the right direction. (Zhouyi, Commentary on the Image; public domain)

The force used in repair goes slightly too far, leaving some regret. But because the direction is right, it does not amount to a major fault.

If you speak too harshly or move too fast during reform, explain or apologize afterward. One misstep need not mean abandoning the entire undertaking.

For the regret left by trying to do the right thing, does the method or the attitude need repair?

Six in the fourth place: Indulging the father's decay. Advancing brings humiliation.

Commentary on the Image: “Indulging the father's decay: advancing achieves nothing.” Leniently allowing inherited problems to continue brings no gain, hence the line's warning of humiliation. (Zhouyi, Commentary on the Image; public domain)

Continually tolerating and postponing accumulated problems may seem kind, but the problems only grow. The warning of humiliation shows that neglect is no solution.

If you know a process or habit is faulty but keep saying “let's wait and see,” set a clear deadline and owner so the issue actually begins to be addressed.

Is your tolerance of this problem compassion, or reluctance to face it?

Six in the fifth place: Repairing the father's decay. Receiving praise.

Commentary on the Image: “Repairing the father's decay brings praise because it is carried on through virtue.” Correcting inherited problems earns recognition through character, rather than tactical victory. (Zhouyi, Commentary on the Image; public domain)

Taking over and correcting old problems with virtue earns recognition. This line says that character in handling matters, rather than forcefulness, is what truly wins trust.

When reform works, return credit to the system and team. Build trust through consistent conduct instead of advertising personal tactics.

Do others recognize your results, or your way of working?

Nine at the top: Not serving kings or lords, holding one's undertaking in high esteem.

Commentary on the Image: “Not serving kings or lords: this purpose can be a model.” Choosing to preserve one's own purpose outside rulers' affairs is affirmed as exemplary self-possession and independence. (Zhouyi, Commentary on the Image; public domain)

At the end of repair, this line chooses to leave power and office aside, preserving a noble purpose. The Image affirms that such a choice can be exemplary.

When you are no longer needed, or further involvement only draws you into power struggles, you may withdraw and turn toward what you value more.

Are you staying in this position because work remains, or because you cannot bear to leave?

Try It Yourself

Swap the halves so Gen moves down and Xun moves up, and watch the name and the two halves change.

This page has a hands-on exercise. It is built into the Traditional Chinese page: open the interactive exercise.

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