需 → 革
Hexagram 5: Waiting → Hexagram 49: Revolution
Changing Lines
This transformation involves 2 changing lines (lines 2, 4).
Line 2
九二 需于沙。小有言。終吉。
Nine in the second place means: Waiting on the sand. There is some gossip. The end brings good fortune.
Line 4
六四 需于血。出自穴。
Six in the fourth place means: Waiting in blood. Get out of the pit.
Trigram Changes
Yilin Verse
昧旦乘車，履危蹈溝。亡失裙襦，摧折兩軸。
Setting out in darkness by carriage; treading danger, falling into ditches. Losing skirt and tunic; both axles snap and break.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
Clouds above heaven meet the lake with fire within it — Revolution's transformative upheaval. Setting out before dawn by carriage, one stumbles into danger and falls into a ditch. Skirts and jackets are lost; both axles snap. Everything about this journey goes wrong: the timing (predawn darkness), the terrain (rutted and treacherous), the vehicle (broken beyond repair). Haste before the proper hour produces not transformation but wreckage. From Waiting to Revolution, the patient clouds give way to the fire-in-the-lake that demands radical change — but revolution attempted without preparation destroys the vehicle of change itself. The broken axles cannot carry one forward; the lost garments signal the stripping away of all dignity.
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