蒙 → 革
Hexagram 4: Youthful Folly → Hexagram 49: Revolution
Changing Lines
This transformation involves 6 changing lines (lines 1, 2, 3, 4, 5, 6).
Line 1
初六 發蒙。利用刑人。用說桎梏。以往吝。
Six at the beginning means: To make a fool develop It furthers one to apply discipline. The fetters should be removed. To go on in this way bring humiliation.
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 3
六三 勿用取女。見金夫。不有躬。无攸利。
Six in the third place means: Take not a maiden who, when she sees a man of bronze, Loses possession of herself. Nothing furthers.
Line 4
六四 困蒙。吝。
Six in the fourth place means: Entangled folly bring humiliation.
Line 5
六五 童蒙。吉。
Six in the fifth place means: Childlike folly brings good fortune.
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
愆淫旱疾，傷害稼穡。喪制病來，農人無食。
Excessive rain and drought and disease; they harm the planting and harvesting. Mourning rites, illness arrives; the farmer has nothing to eat.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
A spring beneath the mountain dries as the sky turns hostile. Excessive rain and drought alternate as disease strikes the crops. Mourning ceremonies coincide with illness; farmers have nothing to eat. The verse catalogs agrarian catastrophe in its fullest form — weather, pestilence, and human sorrow converging on the same harvest. When heaven's rhythms go wrong, the entire cycle of planting and reaping collapses. From Youthful Folly to Revolution, the transformation carries a dual edge. Fire within the lake signals the need for radical change — reforming the calendar, correcting the seasons. The naif confronts a broken world where mere endurance is insufficient; only a fundamental restructuring of the order can restore the cycle of growth.
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