Shih Ho / Biting ThroughThunder and Lightning

Hexagram 21 ·

When an obstacle to union arises, energetic biting through brings success. This is true in all situations. Whenever unity cannot be established, the obstruction...

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

This hexagram represents an open mouth (cf. hexagram 27) with an obstruction (in the fourth place) between the teeth. As a result the lips cannot meet. To bring them together one must bite energetically through the obstacle. Since the hexagram is made up of the trigrams for thunder and for lightning, it indicates how obstacles are forcibly removed in nature. Energetic biting through overcomes the obstacle that prevents joining of the lips; the storm with its thunder and lightning overcomes the disturbing tension in nature. Recourse to law and penalties overcomes the disturbances of harmonious social life caused by criminals and slanderers. The theme of this hexagram is a criminal lawsuit, in contradistinction to that of Sung, CONFLICT (6), which refers to civil suits.

Hexagram Judgment

BITING THROUGH has success. It is favorable to let justice be administered.

When an obstacle to union arises, energetic biting through brings success. This is true in all situations. Whenever unity cannot be established, the obstruction is due to a talebearer and traitor who is interfering and blocking the way. To prevent permanent injury, vigorous measures must be taken at once. Deliberate obstruction of this sort does not vanish of its own accord. Judgment and punishment are required to deter or obviate it. However, it is important to proceed in the right way. The hexagram combines Li, clarity, and Chên, excitement. Li is yielding, Chên is hard. Unqualified hardness and excitement would be too violent in meting out punishment; unqualified clarity and gentleness would be too weak. The two together create the just measure. It is of moment that the man who makes the decisions (represented by the fifth line) is gentle by nature, while he commands respect by his conduct in his position.

Tuan Commentary

There is something lodged between the jaws, and this is called Biting Through. Biting through and then succeeding means that the firm and yielding are distinguished, movement is joined with clarity, and thunder and lightning unite in brightness. The yielding attains the middle and rises upward; although not in the proper place, it is favorable to use legal proceedings.

Biting Through means there is something blocking the jaws. By biting through it, success becomes possible. Firm and yielding are clearly distinguished, movement is joined with clarity, and thunder with lightning make things manifest. Though the yielding line is not in its proper place, it is still favorable to use legal proceedings.

Great Image

Thunder and lightning: The image of BITING THROUGH. Thus the kings of former times made firm the laws Through clearly defined penalties.

Penalties are the individual applications of the law. The laws specify the penalties. Clarity prevails when mild and severe penalties are clearly differentiated, according to the nature of the crimes. This is symbolized by the clarity of lightning. The law is strengthened by a just application of penalties. This is symbolized by the terror of thunder. This clarity and severity have the effect of instilling respect; it is not that the penalties are ends in themselves. The obstructions in the social life of man increase when there is lack of clarity in the penal codes and slackness in executing them. The only way to strengthen the law is to make it clear and to make penalties certain and swift.

Line Judgments
FirstNine

Nine at the beginning means: His feet are fastened in the stocks, So that his toes disappear. No blame.

If a sentence is imposed the first time a man attempts to do wrong, the penalty is a mild one. Only the toes are put in the stocks. This prevents him from sinning further and thus he becomes free of blame. It is a warning to halt in time on the path of evil.

Small Image

His feet are fastened in the stocks, so that his toes disappear. He does not walk on the path.

Feet in stocks, toes gone, shows one who does not walk the proper path.

SecondSix

Bites through tender meat, So that his nose disappears. No blame.

It is easy to discriminate between right and wrong in this case; it is like biting through tender meat. But one encounters a hardened sinner, and, aroused by anger, one goes a little too far. The disappearance of the nose in the course of the bite signifies that indignation blots out finer sensibility. However, there is no great harm in this, because the penalty as such is just.

Small Image

Bites through tender meat, so that his nose disappears. He strikes on the yielding.

Biting tender meat, nose gone, shows necessary severity toward the yielding.

ThirdSix

Bites on old dried meat And strikes on something poisonous. Slight humiliation. No blame.

Punishment is to be carried out by someone who lacks the power and authority to do so. Therefore the culprits do not submit. The matter at issue is an old one—as symbolized by salted game—and in dealing with it difficulties arise. This old meat is spoiled: by taking up the problem the punisher arouses poisonous hatred against himself, and in this way is put in a somewhat humiliating position. But since punishment was required by the time, he remains free of blame.

Small Image

Bites on old dried meat and strikes on something poisonous. His position is not appropriate.

Biting old meat strikes poison because the position is not appropriate.

FourthNine

Bites on dried gristly meat. Receives metal arrows. It furthers one to be mindful of difficulties And to be persevering. Good fortune.

There are great obstacles to be overcome, powerful opponents are to be punished. Though this is arduous, the effort succeeds. But it is necessary to be hard as metal and straight as an arrow to surmount the difficulties. If one knows these difficulties and remains persevering, he attains good fortune. The difficult task is achieved in the end.

Small Image

It furthers one to be mindful of difficulties and to be persevering. He does not yet shine brightly.

Being mindful of difficulty and persevering means the light is not yet fully manifest.

FifthSix

Bites on dried lean meat. Receives yellow gold. Perseveringly aware of danger. No blame.

The case to be decided is indeed not easy but perfectly clear. Since we naturally incline to leniency, we must make every effort to be like yellow gold—that is, as true as gold and as impartial as yellow, the color of the middle [the mean]. It is only by remaining conscious of the dangers growing out of the responsibility we have assumed that we can avoid making mistakes.

Small Image

It furthers one to be mindful of difficulties. No blame. He receives the great mandate.

Being mindful of difficulty brings no blame because one receives what is fittingly entrusted.

TopNine

His neck is fastened in the wooden cangue, So that his ears disappear. Misfortune.

In contrast to the first line, this line refers to a man who is incorrigible. His punishment is the wooden cangue, and his ears disappear under it—that is to say, he is deaf to warnings. This obstinacy leads to misfortune.

Small Image

His neck is fastened in the wooden cangue, so that his ears disappear. He does not hear clearly.

Neck in cangue, ears gone, shows one who does not hear clearly or understand.

Frequently asked questions

What does Shih Ho / Biting Through mean in the I Ching?

When an obstacle to union arises, energetic biting through brings success. This is true in all situations. Whenever unity cannot be established, the obstruction...

How should I study Hexagram 21 on this page?

Start with the judgment and image, then read the line statements in sequence. If a sentence is imposed the first time a man attempts to do wrong, the penalty is a mild one. Only the toes are put in the stocks. This prevents him from sinning further and thus...

How can this hexagram be applied in a modern reading?

Biting Through means there is something blocking the jaws. By biting through it, success becomes possible. Firm and yielding are clearly distinguished, movement is joined with clarity, and thunder with lightning make thi...

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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Biting Through means there is something blocking the jaws. By biting through it, success becomes possible. Firm and yielding are clearly distinguished, movement is joined with clarity, and thunder with lightning make thi...

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