I Ching hexagram
18. Repair
蠱Gǔ
Mountain over Wind
Also called Work On What Has Been Spoiled, The Symbol of Destruction, Decay, Arresting of Decay, Work after Spoiling, Fixing, Rectifying, Corrupting, Branch, Degeneration, Misdeeds "Can refer to heredity and psychological traits.” -- D. F. Hook

Hexagram 18, Repair (蠱 Gǔ) is formed by Mountain over Wind. It is also known as Work On What Has Been Spoiled, The Symbol of Destruction, Decay, Arresting of Decay, Work after Spoiling, Fixing, Rectifying, Corrupting.
Legge
Read as
The judgment
Legge
元亨,利涉大川。先甲三日,後甲三日。
Successful progress is indicated for those who properly repair what has been spoiled. It is advantageous to cross the great stream. One should consider carefully the events three days before the turning point and the tasks remaining for three days afterward.
The six lines
line 1 is at the bottom
- Line 1Yin
幹父之蠱,有子,考无咎,厲終吉。
To prevent stagnation, you need to reform outdated structures in your life. This may seem daunting, but with care, you can successfully navigate this change and foster new growth.
- Line 2Yang
幹母之蠱,不可貞。
You’re now aware of past errors that need to be corrected. Proceed with caution, as your changes could impact those you care about.
- Line 3Yang
幹父之蠱,小有悔,无大咎。
You're eager to fix past mistakes and move forward, but your haste may come off as inconsiderate to others. However, you won't face negative consequences for your actions.
- Line 4Yin
裕父之蠱,往見吝。
The environment has been disharmonious for a while, yet this has been accepted. If this continues, things will only worsen.
- Line 5Yin
幹父之蠱,用譽。
You have the chance to take charge of a long-overdue change. Go for it. People around you will support your efforts, and you will receive recognition and praise.
- Line 6Yang
不事王侯,高尚其事。
You have the potential to rise above the situation. Instead of getting bogged down by specific social issues, focus on broader goals and your personal or spiritual growth. Be careful not to adopt a cynical or condescending perspective, as this could hinder your progress.
When this hexagram changes
These are the moves that have come up most often in readings. Each page keeps the book text.
Use this hexagram in a reading
These are the same judgment and lines that appear when hexagram 18 comes up in a cast. Ask a question to see which lines change, or keep a journal of your readings. The throw uses the odds of three coins: how a reading is cast.