蒙 → 豫
Hexagram 4: Youthful Folly → Hexagram 16: Enthusiasm
Changing Lines
This transformation involves 3 changing lines (lines 2, 4, 6).
Line 2
九二 包蒙吉。納婦吉。子克家。
Nine in the second place means: To bear with fools in kindliness brings good fortune. To know how to take women Brings good fortune. The son is capable of taking charge of the household.
Line 4
六四 困蒙。吝。
Six in the fourth place means: Entangled folly bring humiliation.
Line 6
上九 擊蒙。不利為寇。利禦寇。
Nine at the top means: In punishing folly It does not further one To commit transgressions. The only thing that furthers Is to prevent transgressions.
Trigram Changes
Yilin Verse
猾夫爭強，民去其鄉。公孫叔子，戰於瀟湘。
Cunning men contend for dominance; the people leave their homes. Lords Gongsun and Shuzi battle at Xiao and Xiang.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
A spring beneath the mountain is churned to mud as warlords clash. Cunning strongmen vie for dominance, the people flee their villages. 'Gongsun' and 'Shuzi' — aristocratic titles suggesting feudal lords — do battle in the region of the Xiao and Xiang rivers, a landscape associated with southern exile and lamentation in Chinese poetry. The verse paints civil strife in its most destructive form: not foreign invasion but domestic rivals tearing the land apart. From Youthful Folly to Enthusiasm, the irony is grim. Thunder erupts from the earth in what should be joyous arousal, but here that energy is weaponized into factional warfare. Enthusiasm without guidance becomes violence.
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