需 → 震
Hexagram 5: Waiting → Hexagram 51: The Arousing Thunder
Changing Lines
This transformation involves 4 changing lines (lines 2, 3, 4, 5).
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 3
九三 需于泥。致寇至。
Nine in the third place means: Waiting in the mud Brings about the arrival of the enemy.
Line 4
六四 需于血。出自穴。
Six in the fourth place means: Waiting in blood. Get out of the pit.
Line 5
九五 需于酒食。貞吉。
Nine in the fifth place means: Waiting at meat and drink. Perseverance brings good fortune.
Trigram Changes
Yilin Verse
卷領遁世，仁德不舍。三聖攸同，周家茂興。
In rolled collars, withdrawing from the world; benevolent virtue is not abandoned. The three sages act together; the house of Zhou thrives and flourishes.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
Clouds above heaven meet doubled thunder — the Arousing's explosive emergence. One who wraps his collar and retreats from the world nevertheless does not abandon benevolent virtue. The 'Three Sages' are united in purpose, and the house of Zhou flourishes. The 'wrapped collar' (卷領) suggests a figure in humble garb withdrawing from public life, yet his virtue endures. The 'Three Sages' likely refers to the founding trio of Zhou: King Wen's moral foundation, King Wu's martial decisive action, and the Duke of Zhou's institutional consolidation. Their combined virtues propelled Zhou from a small western fief to dynastic supremacy. From Waiting to The Arousing, hidden virtue gathers until it can no longer be contained — like thunder that accumulates underground before shaking the world awake.
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