兌 → 革
Hexagram 58: The Joyous Lake → Hexagram 49: Revolution
Changing Lines
This transformation involves 2 changing lines (lines 2, 3).
Line 2
九二 孚兌吉。悔亡。
Nine in the second place means: Sincere joyousness. Good fortune. Remorse disappears.
Line 3
六三 來兌凶。
Six in the third place means: Coming joyousness. Misfortune.
Trigram Changes
Yilin Verse
鳥鳴喈喈，天火將下。燔我館舍，災及妃后。
Birds cry in alarm; heavenly fire is about to descend. It burns my hall and lodging; disaster reaches the consort and queen.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
Paired lakes hold fire within — Revolution, the hexagram of radical transformation. Birds cry out in shrill alarm as heavenly fire descends, burning down the palace and its lodgings, the disaster reaching even the queen and consorts. The conjunction of birds crying and fire falling recalls the ancient omen tradition where unusual bird behavior presages calamity. From The Joyous to Revolution, the verse traces how joy's surface shatters under transformative violence. Fire within the lake is revolution's image — water and fire in the same vessel cannot coexist. The palace fire that reaches the queen signals a revolution so thorough that it consumes even the inner chambers of power.
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