豫 → 頤
Hexagram 16: Enthusiasm → Hexagram 27: Nourishment
Changing Lines
This transformation involves 3 changing lines (lines 1, 4, 6).
Line 1
初六 鳴豫。凶。
Six at the beginning means: Enthusiasm that expresses itself Brings misfortune.
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 6
上六 冥豫。成有渝。无咎。
Six at the top means: Deluded enthusiasm. But if after completion one changes, There is no blame.
Trigram Changes
Yilin Verse
滕虵乘龍，宋鄭飢凶；民食草蓬。
The vine-snake mounts the dragon; Song and Zheng suffer famine and calamity. The people eat wild grasses.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
Commentary
Thunder rises from the earth, but a flying serpent rides upon a dragon — the natural hierarchy inverted, the lesser commanding the greater. The states of Song and Zheng suffer famine, and the people are reduced to eating wild weeds. The 'flying serpent riding the dragon' is a classical omen of misrule: when subordinates usurp their superiors, calamity follows. The famine in Song and Zheng makes the consequences visceral — not abstract political theory but empty stomachs and desperate foraging. From Enthusiasm to Nourishment, the transformation is bitterly apt: mountain over thunder, the image of careful feeding. When governance is inverted and nourishment fails, the people starve. Enthusiasm perverted into misrule produces the opposite of what Nourishment requires.
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