A hexagram about removing an obstruction by force. Biting Through describes a situation where something is lodged in the middle of things, and the text treats decisive, and specifically legal, action as the correct response.
Twenty-first in the King Wen order. The Sequence places it after Contemplation, reasoning that when there is something to look at there is union, and shi he means to bite until the jaws close.
The Judgement is two clauses: Biting through. Success. It is favourable to administer justice.
The second clause is unusually concrete. Most of the book gives conditions and postures; this one names an institution. The classical reading is that the obstruction described by the hexagram is not removed by patience or by influence but by a formal proceeding with a verdict at the end of it. That is a strong claim and it is worth noticing how narrow it is. The text approves of the process, not of any particular outcome, and it says nothing about who is in the right. Compare Conflict, which treats going to law as a warning rather than a recommendation.
The Image: thunder and lightning. Biting through. The ancient kings made the penalties clear and put the laws in order.
Thunder below and fire above give noise and light together, and the Xiang takes the pairing literally: lightning shows you what is there, thunder makes it unignorable. The conduct drawn from it is not judgement but publication. Clarify the penalty and write down the law, in advance, so that the biting through is predictable rather than arbitrary. It is a more procedural instruction than the Judgement's, and the two together describe a system rather than a decision.
The image behind this hexagram is a mouth with something stuck in it. A solid line at the bottom and another at the top are the jaws, the yielding lines between them are the gap, and the strong fourth line is the obstruction. Biting through is what you do to close the jaws: the blockage is removed by force applied deliberately, and there is no version of this figure where it dissolves on its own.
What sits in the middle is usually a person or a fact. Someone who will not be talked round, a debt that will not be acknowledged, a piece of behaviour everyone has decided to work around. The hexagram is unsentimental about this. Working around an obstruction is what produces the situation it describes, and the text has no patience for it.
The legal framing is explicit and it constrains the reading in a useful way. Justice here means a process with rules, evidence and a stated penalty, not the satisfaction of being right. What the question changes is whether you are the one biting or the thing being bitten. Asked by the person who wants the obstruction removed, this supports formal action. Asked by someone who has become the obstruction, the first and last lines are the relevant ones, and they describe punishment scaled to how long it went on. Compare Grace, this figure inverted, which is the same jaws attending to appearance instead.
In a relationship question Biting Through describes something that has to be said and has been avoided. The hexagram is built around an obstruction sitting in the middle of a structure that cannot close while it is there, and applied to two people that is usually one specific unresolved thing everybody has learned to talk past.
The text supports naming it directly. What it does not support is the register most people reach for. Justice here means clarity and a stated consequence, not a reckoning about who has been worse. The middle lines describe biting through progressively tougher material and occasionally meeting something poisonous, which is a fair description of what happens when the avoided subject is finally opened.
At work this is the problem everyone routes around. A person who does not deliver and is never told, a process that fails quietly, a contract nobody has enforced. The hexagram identifies the cost: the structure cannot close while the obstruction is in it, so every piece of work has to detour, and the detours are invisible because they have become normal.
The text supports formal action. Put it in writing, state the standard, name the consequence. The fourth and fifth lines both describe getting something valuable out of hard material, which the commentators read as the legitimate authority that comes from handling a difficult case properly. The top line is the warning: an obstruction left until it is severe attracts a punishment out of proportion to the original fault.
In money questions this describes something owed, disputed, or not being acknowledged. An invoice ignored, a deposit withheld, a shared cost one party has quietly stopped paying. The hexagram is the book's clearest endorsement of using a formal process rather than continuing to ask.
Two things limit it. It says nothing about the merits and nothing about what a process would cost, both of which are real and neither of which the text can assess. Nothing here is advice about a specific claim. What the hexagram identifies is the pattern: an unresolved obligation sitting in the middle of an arrangement, absorbing more effort each month it stays there than resolving it would.
Say the thing plainly, in writing, with the consequence attached. Not the hint, not the third conversation about it, and not a complaint to someone other than the person concerned. The Image is specific that the penalty is clarified before it is applied, so the useful version of this is a written statement of what needs to change and what happens if it does not.
A yang line in the bottom place, a yang position, correctly placed, and the lower jaw of the figure. The text: the feet are fastened in the stocks so the toes disappear. No blame.
A first offence and a minor punishment. Correction that arrives early can be small. This line and the top line are the two that describe punishment devices rather than eating, and they frame the hexagram: the difference between them is entirely a matter of how long the fault was allowed to run.
A yin line in the second place, a yin position, correctly placed and central in the lower trigram. The text: biting through tender meat so that the nose disappears. No blame.
The easiest bite in the hexagram, and the line best placed to make it. The disappearing nose is usually read as going in too deep because the material gave way faster than expected. Even the correctly placed line, working on soft material, overshoots. The text still finds no blame, and the pattern across the middle lines is that overreach is expected and forgiven while inaction is not.
A yin line in the third place, a yang position, so it is incorrectly placed: a weak line attempting a job it is not equipped for. The text: biting dried meat and meeting something poisonous. Slight humiliation. No blame.
The material has hardened and there is something wrong inside it. This is the line where an old grievance is finally opened and turns out to contain more than expected. The verdict is mild, and the commentators put that down to the attempt being right even though the position was wrong.
A yang line in the fourth place, a yin position, so it is incorrectly placed, and it is the obstruction itself: the strong line lodged between the jaws. The text: biting dried gristly meat and getting metal arrows. It furthers to persevere in difficulty. Good fortune.
The arrows are a legal deposit. In Zhou practice a party to a case lodged arrows before a hearing, so the line describes a dispute being formally entered rather than a prize being won. Changing this line gives The Corners of the Mouth, the same jaws with nothing stuck in them.
A yin line in the fifth place, a yang position, so it is incorrectly placed, and it is the ruling line, central in the upper trigram. The text: biting dried meat and getting yellow gold. Persevere in awareness of danger. No blame.
Gold, like the arrows below, is a court deposit rather than a reward. The line that presides over the case is a yielding one, which the commentators treat as the point: judgement is best exercised by someone who does not enjoy it. The instruction to stay aware of danger is attached to the ruler alone.
A yang line in the top place, a yin position, incorrectly placed, and the upper jaw of the figure. The text: he wears the cangue so that his ears disappear. Misfortune.
The cangue was a heavy board locked around the neck. Where the first line had the feet restrained and the toes hidden, here the head is held and the ears are covered, and the hexagram's only unambiguous misfortune is attached to it. The commentators read the covered ears as the reason rather than the punishment: someone who stopped hearing correction early enough that only this was left.
Zhen, thunder, sits below Li, fire. The Image reads the pair as thunder and lightning, and both trigrams are active rather than receptive, which gives the figure its unusual willingness to recommend force.
The more important structural reading is the whole shape. Solid lines at top and bottom with broken lines between them is the picture of an open mouth, and it is the basis of Hexagram 27, The Corners of the Mouth. This figure is that one with a strong line inserted at the fourth place, and everything the hexagram says follows from that single difference. There is something in the mouth. The jaws cannot close until it is gone.
The nuclear hexagram is Hexagram 39, Obstruction, which is the same idea stated as terrain rather than as appetite. What the nuclear adds is patience: Obstruction counsels turning back and working on yourself where the surface hexagram counsels biting. Held together they suggest that the obstruction is real and that forcing it is not always available.
This is one of the hexagrams where the oracle layer is most visibly about law. The line texts name two objects that were part of Zhou legal procedure: metal arrows and yellow gold, both of which parties deposited with the court before a case was heard. Read as a fee or a bond rather than as treasure, the fourth and fifth lines stop being about reward and become about entering a formal proceeding, which is a considerably drier and more plausible reading.
The punishment devices are equally concrete. The stocks in the first line and the cangue in the last were real, and the progression from restrained feet to a board around the neck is a description of graded penalties rather than a symbol. Very little in this hexagram was originally metaphorical.
The Ten Wings added the Image and its instruction to clarify penalties and set the laws in order, which converts a set of case notes into a theory of jurisprudence. Legge translated it in 1882 and Wilhelm into German in 1924. The opposite figure is The Well, where what is needed is drawn up rather than bitten through.
Biting Through is regularly read as permission to confront someone. The Judgement does not license confrontation; it licenses adjudication, and the difference is the whole content of the hexagram. Adjudication has rules, a stated standard and a proportionate penalty. What most people mean by finally saying something has none of those, and the figure that best describes it is not this one.
The second misreading is about the fourth line. It is the obstruction, and readers who identify with the biting throughout the hexagram tend not to notice that the strongest line in the figure is the thing being removed. If you drew this about a situation where you are the immovable element, four of the six lines are describing the effort other people are making to get past you.
The third is treating the arrows and the gold as reward. They are court deposits, which reverses the sense: those lines describe paying to enter a dispute, not profiting from winning one. English versions that render them as treasure produce a hexagram about being vindicated, which is a considerably more appealing text than the one that is actually there.
Put a real question to the coins.