噬嗑 → 蠱
Hexagram 21: Biting Through → Hexagram 18: Work on the Decayed
䷔
噬嗑
Biting Through
Fire / Thunder
→
䷑
蠱
Work on the Decayed
Mountain / Wind
Changing LinesStable Lines
Changing Lines
This transformation involves 4 changing lines (lines 1, 2, 3, 4).
Trigram Changes
Upper TrigramFire → MountainThe Clinging → Keeping Still
Lower TrigramThunder → WindThe Arousing → The Gentle
Yilin Verse
蜎飛蠢動，各有配偶；小大相保，咸得其所。
Wriggling insects and creeping creatures, each has its mate; small and great protect one another -- all find their proper place.
— Jiao Yanshou, Yilin (Forest of Changes), 1st century BCE
The Six Lines app includes all 4,096 Yilin verses, each with original ink brush artwork and full commentary. Download on the App Store