大壯 → 兌
Hexagram 34: Great Power → Hexagram 58: The Joyous Lake
Changing Lines
This transformation involves 2 changing lines (lines 3, 5).
Line 3
九三 小人用壯。君子用罔。貞厲。羝羊觸藩。羸其角。
Nine in the third place means: The inferior man works through power. The superior man does not act thus. To continue is dangerous. A goat butts against a hedge And gets its horns entangled.
Line 5
六五 喪羊于易。无悔。
Six in the fifth place means: Loses the goat with ease. No remorse.
Trigram Changes
Yilin Verse
嵩高岱宗，峻直且神，觸石膚寸，千里蒙恩。
Lofty Song, great Tai; steep, upright, and divine. Clouds rise from a hand-span of stone; a thousand li receive their grace.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
Thunder above heaven invokes the twin sacred mountains: Mount Song the lofty and Mount Tai the ancestral summit, both towering and divine. 'Touching the stone, spreading a fist's breadth' alludes to the classical description of how clouds form on sacred peaks — moisture gathers on the rock face, starting as a patch no wider than a hand, then spreading across a thousand li as rain that nourishes the realm. From Great Power to the Joyous, doubled lake in Dui reflects the image of friends sharing knowledge. The transformation reveals how concentrated, almost imperceptible power — the first wisp of cloud on stone — expands into universal blessing. Joy arises not from force but from the mountain's quiet gift: a thousand li of grace born from a single point of contact.
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