Hexagram 34 of 64
The Power of the Great
大壯 (Dà Zhuàng)
Great Vigor (dà zhuàng) — strength at full surge, power at its peak
Great StrengthAs shown in classical I Ching texts
Composition
Upper Trigram
Arousing, awakening, shocking — sudden movement from stillness
Outer situation / environment
Lower Trigram
Creative, initiating, strong — the power that begins things
Inner situation / your state
Interaction
Thunder above Heaven — storm meeting sky. The outer energy of thunder shapes the inner disposition of heaven.
Meaning
Great power must be tempered with right conduct. Only what is right has lasting power.
Classical Judgment
“The Power of the Great. Perseverance furthers.”
The classical judgment is the original oracle text — the answer the I Ching gives when this hexagram appears.
The Image
Thunder in heaven above. The superior one does not tread upon paths that do not accord with established order.
The Image is a nature scene associated with this hexagram — a symbolic picture that distils its essence. In classic texts, meditating on the Image was considered the proper way to absorb the hexagram's teaching.
Nuclear Hexagram
Lines 2–5 of this hexagram form an inner hexagram called the nuclear hexagram. It reveals the hidden seed or underlying dynamic within the situation — what lies at the core beneath the surface.
#43 — Hidden within
Break-through
夬 (Guài) · Resolution
In a Reading
When hexagram 34 appears in your reading, the I Ching is drawing your attention to the quality of great strength. Sit with the Image — “Thunder in heaven above” — and consider how this pattern is playing out in your current situation. The Judgment offers the oracle’s direct guidance on how to move with this energy rather than against it.
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