Ta Chuang / The Power of the GreatThunder in Heaven

Hexagram 34 ·

The hexagram points to a time when inner worth mounts with great force and comes to power. But its strength has already passed beyond the median line, hence the...

First
Nine
Second
Nine
Third
Nine
Fourth
Nine
Fifth
Six
Top
Six
Quick Guide

The great lines, that is, the light, strong lines, are powerful. Four light lines have entered the hexagram from below and are about to ascend higher. The upper trigram is Chên, the Arousing; the lower is Ch’ien, the Creative. Ch’ien is strong, Chên produces movement. The union of movement and strength gives the meaning of THE POWER OF THE GREAT. The hexagram is linked with the second month (March–April).

Hexagram Judgment

THE POWER OF THE GREAT. Perseverance furthers.

The hexagram points to a time when inner worth mounts with great force and comes to power. But its strength has already passed beyond the median line, hence there is danger that one may rely entirely on one’s own power and forget to ask what is right. There is danger too that, being intent on movement, we may not wait for the right time. Therefore the added statement that perseverance furthers. For that is truly great power which does not degenerate into mere force but remains inwardly united with the fundamental principles of right and of justice. When we understand this point—namely, that greatness and justice must be indissolubly united—we understand the true meaning of all that happens in heaven and on earth.

Tuan Commentary

Great Power means that the great becomes strong. Through firmness in movement comes power. It furthers to be persevering, because the great must be right. When what is right is great, the nature of heaven and earth becomes visible.

Great Power means the great becomes strong. Through firmness in movement comes power. Perseverance furthers because greatness must be combined with rightness.

Great Image

Thunder in heaven above: The image of THE POWER OF THE GREAT. Thus the superior man does not tread upon paths That do not accord with established order.

Thunder—electrical energy—mounts upward in the spring. The direction of this movement is in harmony with that of the movement of heaven. It is therefore a movement in accord with heaven, producing great power. However, true greatness depends on being in harmony with what is right. Therefore in times of great power the superior man avoids doing anything that is not in harmony with the established order.

Line Judgments
FirstNine

Power in the toes. Continuing brings misfortune. This is certainly true.

The toes are in the lowest place and are ready to advance. So likewise great power in lowly station is inclined to effect advance by force. This, if carried further, would certainly lead to misfortune, and therefore by way of advice a warning is added.

Small Image

Power in the toes means he will certainly exhaust himself.

Power in the toes leads to certain exhaustion of strength.

SecondNine

Perseverance brings good fortune.

The premise here is that the gates to success are beginning to open. Resistance gives way and we forge ahead. This is the point at which, only too easily, we become the prey of exuberant self-confidence. This is why the oracle says that perseverance (i.e., perseverance in inner equilibrium, without excessive use of power) brings good fortune.

Small Image

Nine in the second place means perseverance brings good fortune, because he holds to the middle.

Perseverance brings good fortune because of holding to the middle.

ThirdNine

The inferior man works through power. The superior man does not act thus. To continue is dangerous. A goat butts against a hedge And gets its horns entangled.

Making a boast of power leads to entanglements, just as a goat entangles its horns when it butts against a hedge. Whereas an inferior man revels in power when he comes into possession of it, the superior man never makes this mistake. He is conscious at all times of the danger of pushing ahead regardless of circumstances, and therefore renounces in good time the empty display of force.

Small Image

The inferior man uses power, the superior man uses a refusal—the difference lies in their positions.

The difference between using force and refraining lies in their positions.

FourthNine

Remorse disappears. The hedge opens; there is no entanglement. Power depends upon the axle of a big cart.

If a man goes on quietly and perseveringly working at the removal of resistances, success comes in the end. The obstructions give way and all occasion for remorse arising from excessive use of power disappears. Such a man’s power does not show externally, yet it can move heavy loads, like a big cart whose real strength lies in its axle. The less that power is applied outwardly, the greater its effect.

Small Image

Perseverance brings good fortune, remorse disappears, because he can still go forward.

Good fortune comes because he can still advance when the hedge opens.

FifthSix

Loses the goat with ease. No remorse.

The goat is noted for hardness outwardly and weakness within. Now the situation is such that everything is easy; there is no more resistance. One can give up a belligerent, stubborn way of acting and will not have to regret it.

Small Image

He loses the goat in ease because his place is not the proper one.

Losing the goat happens because the position is not proper.

TopSix

A goat butts against a hedge. It cannot go backward, it cannot go forward. Nothing serves to further.

If one notes the difficulty, this brings good fortune. If we venture too far we come to a deadlock, unable either to advance or to retreat, and whatever we do merely serves to complicate things further. Such obstinacy leads to insuperable difficulties. But if, realizing the situation, we compose ourselves and decide not to continue, everything will right itself in time.

Small Image

He cannot go backward, he cannot go forward: this is unfortunate. But if he notes the difficulty, the blame will not last long.

Being stuck brings misfortune, but recognizing difficulty leads to quick resolution.

Frequently asked questions

What does Ta Chuang / The Power of the Great mean in the I Ching?

The hexagram points to a time when inner worth mounts with great force and comes to power. But its strength has already passed beyond the median line, hence the...

How should I study Hexagram 34 on this page?

Start with the judgment and image, then read the line statements in sequence. The toes are in the lowest place and are ready to advance. So likewise great power in lowly station is inclined to effect advance by force. This, if carried further, would certainl...

How can this hexagram be applied in a modern reading?

Great Power means the great becomes strong. Through firmness in movement comes power. Perseverance furthers because greatness must be combined with rightness.

Sources and Method

Primary text: Zhouyi / I Ching, including the Judgment, Image, line texts, and related commentaries.

Translation basis: public-domain and modern study references, with AI used only as a learning aid.

Zhouyi / I Ching primary text: The received text of the Book of Changes, including the Judgment, Image, and line statements.

The I Ching or Book of Changes, Richard Wilhelm / Cary F. Baynes: Princeton University Press translation used as a major English-language reference point for names, structure, and commentary framing.

The Sacred Books of China: The Texts of Confucianism, James Legge: Classical English reference used for comparative reading of source terminology and commentarial tradition.

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Great Power means the great becomes strong. Through firmness in movement comes power. Perseverance furthers because greatness must be combined with rightness.

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