大壯 → 益
Hexagram 34: Great Power → Hexagram 42: Increase
Changing Lines
This transformation involves 5 changing lines (lines 2, 3, 4, 5, 6).
Line 2
九二 貞吉。
Nine in the second place means: Perseverance brings good fortune.
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 4
九四 貞吉。悔亡。藩決不羸。壯于大輿之輹。
Nine in the fourth place means: Perseverance brings good fortune. Remorse disappears. The hedge opens; there is no entanglement. Power depends upon the axle of a big cart.
Line 5
六五 喪羊于易。无悔。
Six in the fifth place means: Loses the goat with ease. No remorse.
Line 6
上六 羝羊觸藩。不能退。不能遂。无攸利。艱則吉。
Six at the top means: A goat butts against a hedge. It cannot go backward, it cannot go forward. Nothing serves to further. If one notes the difficulty, this brings good fortune.
Trigram Changes
Yilin Verse
太姒之孫，周文九子，咸遂受成，寵貴富有。
The grandsons of Tai Si, the nine sons of King Wen of Zhou; all accomplished and received their patrimony, favored, noble, and wealthy.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
Thunder above heaven celebrates the progeny of Tai Si, consort of King Wen of Zhou. Her sons — tradition counts ten, though the verse says nine, possibly excluding the eldest Bo Yikao who was killed — all achieved success and received their inheritances, honored and wealthy. Tai Si represents the ideal mother whose virtue multiplied through her children to build the Zhou dynasty. From Great Power to Increase, wind and thunder reinforce each other in Yi: seeing goodness, one moves toward it; finding fault, one corrects it. The transformation reveals how dynastic power propagates through virtuous descendants. The increase is biological and moral simultaneously — each son carries forward both the bloodline and the ethical inheritance of the founders.
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