豫 → 比
Hexagram 16: Enthusiasm → Hexagram 8: Holding Together
Changing Lines
This transformation involves 2 changing lines (lines 4, 5).
Line 4
九四 由豫。大有得。勿疑。朋盍簪。
Nine in the fourth place means: The source of enthusiasm. He achieves great things. Doubt not. You gather friends around you As a hair clasp gathers the hair.
Line 5
六五 貞疾。恆不死。
Six in the fifth place means: Persistently ill, and still does not die.
Trigram Changes
Yilin Verse
虎飢欲食，為蝟而伏。禹導龍門，辟咎除患，元醜以安。
The tiger, hungry and wanting to eat, crouches before the hedgehog. Yu channeled the waters through Dragon Gate, opening a path to remove calamity and danger; all was set at peace.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
Thunder stirs the earth as a hungry tiger crouches, ready to feed — only to be subdued by a hedgehog's bristling defense. Then the scene shifts to Yu the Great carving open Dragon Gate, channeling the floods through the gorge to eliminate disaster and bring peace to the land. The hedgehog restraining the tiger echoes the 'hedgehog as Chief Clerk' motif from the Shiji: small but armored creatures controlling larger predators through defensive capability. Yu's engineering feat at Dragon Gate transformed chaotic floodwaters into navigable channels. From Enthusiasm to Holding Together, the verse traces how raw threats are neutralized and communities unified: water upon earth, the image of alliance, emerges when defensive wisdom and hydraulic mastery turn danger into shared prosperity.
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