乾 → 夬
Hexagram 1: The Creative → Hexagram 43: Breakthrough
Changing Lines
This transformation involves 1 changing line (line 6).
Line 6
上九 亢龍有悔。
Nine at the top means: Arrogant dragon will have cause to repent.
Trigram Changes
Yilin Verse
孤竹之墟，失婦亡夫。傷於蒺藜，不見少妻。東郭棠姜，武氏以亡。
The ruins of Guzhu; husband lost, wife gone. Wounded by caltrops; the young wife unseen. Dongguo Tang Jiang; the Wu clan thereby perished.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
The ruins of Guzhu — the ancient state of Boyi and Shuqi — a place where husbands and wives are lost to each other, where thorns of tribulus pierce the traveler, and the young wife vanishes. Then the verse names a concrete case: Dongguo and Tang Jiang, for whose sake the house of Wu was destroyed. According to the Zuo Zhuan, Cui Zhu of Qi married Tang Jiang, the beautiful widow of Tang Gong, despite receiving an inauspicious divination. Duke Zhuang of Qi had an affair with her; Cui Zhu killed the duke but his own clan was subsequently annihilated. From Creative to Breakthrough, the lake surges above heaven — accumulated pressure erupts. The verse warns that desire unchecked leads to the decisive rupture that Guai represents.
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