大壯Da Zhuang.Great Power.
Thunder rises above Heaven: strong creative force moves outward with visible momentum. Da Zhuang asks whether power is governed by correctness, proportion and restraint—or merely released because it is available.
Use strength without allowing strength to use you.
Four firm lines rise beneath two yielding lines. Momentum is abundant, confidence is high and obstacles appear penetrable.
Yet the Judgment gives only one condition: correctness. Power becomes truly great when it refuses conduct that violates proportion, relationship or principle.
The central danger is confusing capacity with permission. The central discipline is restraint strong enough to direct force rather than merely suppress it.
Thunder above. Heaven below.
Creative force accumulates below and erupts into movement above. The configuration is powerful precisely where self-command becomes indispensable.
Recognise strength. Establish limits. Refuse improper movement. Advance without forcing.
Great Power is not validated by impact alone. Its legitimacy comes from what it refuses to violate.
Know the force available
Strong movement needs accurate awareness of its reach and consequence.
Make power correct
Capacity is beneficial only when governed by principle.
Do not tread beyond what is proper
Restraint proves strength more clearly than impulsive conquest.
Make greatness upright
Power becomes great by serving an order larger than appetite.
Image principle: Thunder above Heaven forms Great Power. The cultivated person does not tread where conduct is improper.
Great strength is beneficial only when correct.
The governing proposition
大壯：利貞。
Great Power. Correctness is beneficial.
The brevity is decisive: strength receives no blanket permission.
Strength joined to movement
大壯，大者壯也。剛以動，故壯。大壯利貞，大者正也。正大而天地之情可見矣。
In Great Power, what is great becomes strong. Firmness moves; therefore there is power. What is great must be correct.
Upright greatness reveals the character of Heaven and Earth.
Strength stops before impropriety
雷在天上，大壯；君子以非禮弗履。
Thunder above Heaven: Great Power. The cultivated person does not tread where there is no propriety.
Self-restraint is not weakness; it is power made governable.
Six tests of powerful momentum.
The lines move from premature force through centred correctness, aggressive collision, released obstruction, easy relinquishment and final entrapment.
Power in the toesMomentum moves before judgment · Changes to 32 恆
初九：壯于趾，征凶，有孚。
Force begins at the extremity and rushes forward. Confidence cannot rescue premature movement from misfortune.
小象傳 · 壯于趾，其孚窮也.Power in the toes exhausts the confidence placed in it.
Correctness brings good fortuneCentred strength does not need display · Changes to 55 豐
九二：貞吉。
Power remains balanced at the centre. Correctness, rather than escalation, is sufficient.
小象傳 · 九二貞吉，以中也.The second line is fortunate through correctness because it is centred.
The ram butts the hedgeAggressive strength entangles itself · Changes to 54 歸妹
九三：小人用壯，君子用罔，貞厲。羝羊觸藩，羸其角。
Brute force mistakes resistance for an invitation to push harder. The horns become trapped in the very barrier they attack.
小象傳 · 小人用壯，君子罔也.The lesser person uses force; the cultivated person does not.
The hedge opensCorrect strength advances without entanglement · Changes to 11 泰
九四：貞吉悔亡，藩決不羸，壯于大輿之輹。
When timing and structure are correct, the barrier yields. Power supports the vehicle instead of wasting itself against resistance.
小象傳 · 藩決不羸，尚往也.The opened hedge does not entangle, so advance remains possible.
Losing the ram with easeRelease aggressive attachment without regret · Changes to 43 夬
六五：喪羊于易，無悔。
Strength no longer needs the identity of forcefulness. Letting the ram go easily removes conflict and regret.
小象傳 · 喪羊于易，位不當也.The ram is lost with ease because the position does not call for force.
Unable to retreat or advanceAcknowledge difficulty to end the impasse · Changes to 14 大有
上六：羝羊觸藩，不能退，不能遂，無攸利；艱則吉。
Force has carried itself into entrapment. Honest recognition of difficulty permits correction; denial prolongs the bind.
小象傳 · 不能退，不能遂，不詳也；艱則吉，咎不長也.Recognising difficulty brings good fortune because blame need not endure.
Convert momentum into disciplined capability.
Work and leadership
Use Da Zhuang when authority, resources or confidence expand rapidly.
- Define non-negotiable limits before acting.
- Remove obstacles structurally, not theatrically.
- Let strength support the vehicle.
Relationships
Intensity does not grant relational permission.
- Respect boundaries even when influence is high.
- Do not weaponise certainty.
- Release the need to dominate.
Timing and decisions
Strong momentum magnifies both correct and incorrect direction.
- Pause before first movement.
- Advance when the hedge opens.
- Name entrapment before pushing again.
Da Zhuang is constructive when strength is proportionate, legitimate and self-governing.
Aligned expression
- Power remains answerable to principle.
- Momentum supports a defined purpose.
- Restraint is exercised before collision.
- Difficulty is acknowledged honestly.
Distorted expression
- Capacity is mistaken for permission.
- Resistance triggers greater aggression.
- Dominance substitutes for authority.
- Entrapment is met with more force.