兌 → 蒙
Hexagram 58: The Joyous Lake → Hexagram 4: Youthful Folly
Changing Lines
This transformation involves 4 changing lines (lines 1, 4, 5, 6).
Line 1
初九 和兌吉。
Nine at the beginning means: Contented joyousness. Good fortune.
Line 4
九四 商兌未寧。介疾有喜。
Nine in the fourth place means: Joyousness that is weighed is not at peace. After ridding himself of mistakes a man has joy.
Line 5
九五 孚于剝。有厲。
Nine in the fifth place means: Sincerity toward disintegrating influences is dangerous.
Line 6
上六 引兌。
Six at the top means: Seductive joyousness.
Trigram Changes
Yilin Verse
天孫帝子，與日月處。光榮於世，福祿繁祉。
The Purple Star blazes, the imperial throne shines bright. On both banks of the Milky Way, colored clouds are born. The celestial ladder drops its golden thread — which mortal shall climb it?
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
Paired lakes open upward to the mountain spring below. The original verse names the celestial grandchild and imperial son dwelling with sun and moon, glorious in the world, receiving manifold blessings. 'Celestial grandchild' and 'imperial son' are standard Han-dynasty epithets for the heir to the throne, one born to heaven's mandate. From The Joyous to Youthful Folly, radiant favor meets the spring issuing from beneath the mountain — a young heir, still unformed, receives cosmic blessing before understanding its weight. The pattern suggests that true nourishment of potential requires not wisdom but trust in the mandate one has been given.
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