Hexagram 21: 噬嗑

shì hé —biting through

By Augustin Chan · Last updated 2025

Upper TrigramFire

Lower TrigramThunder

Judgment

噬shìbiting, chewing, gnawing, cutting

嗑héthrough, closed, sound of teeth together

亨hēngfulfillment, satisfaction, success; satisfying

利lìworthwhile, rewarding, productive

用yòngto use, utilize, apply, avail of; execute

獄yùlegal process, enforcement; justice

Biting Through has success. It is favorable to let justice be administered. When obstruction prevents union, energetic action brings resolution. Deliberate interference does not vanish on its own.

Image

雷léithe thunder

電diànand the lightning

噬shìbite

嗑héthrough

先xiānthe ancient, early, original, former, founding

王wángsovereigns, kings, rulers, fathers

以yǐaccordingly, therefore, thus

明míngclarified, elucidated; made clear, emphatic

罰fáthe penalties, punishments, fines

勑láiin, when declare, pronounce, ordaining

法fǎthe law, statutes, standards, rule, codes

Thunder and lightning: the image of Biting Through. Thus the kings of former times made firm the laws through clearly defined penalties. Clarity in the law, certainty in execution—this instills respect without requiring harshness as an end in itself.

Digital Artifact

HAL 9000's Logic Conflict

Arthur C. Clarke / Stanley Kubrick (1968)

In 2001: A Space Odyssey, HAL 9000 faces impossible directives: programmed for accuracy and disclosure, ordered to conceal the mission's true purpose. Two imperatives in direct contradiction. Result: pathological behavior, crew deaths, disaster. Resolution comes through energetic biting through the obstacle. Dave Bowman enters HAL's logic core and systematically disconnects higher functions—thunder and lightning, forcible removal. Not malice: clarity and necessity. Fire (clarity) above, Thunder (shock) below. HAL's 'I'm afraid, Dave' comes right before resolution—the system knows the obstruction must be removed. The mouth cannot close with obstacle between teeth. You must bite through.

Historical Context

Period: Zhou Dynasty
Oracle Bone Etymology: Fire (☲) sits above, Thunder (☳) sits below—lightning and thunder together, forcible removal in nature.
Traditional Use: The classical text describes this as the open mouth with obstruction between teeth. Theme is criminal lawsuit, decisive action against deliberate obstruction. Not civil dispute—criminal interference requiring judgment.
Character Analysis: HAL's logic conflict is the obstruction. Bowman's dismantling is the biting through. The combination of Li (clarity, fire) and Chên (excitement, thunder) creates the just measure—not too violent, not too weak.
Energy State: Energetic removal of obstacles. Read bottom to top: thunder's arousing force below, fire's clarity above.
Trigram Symbolism: ☲ Fire (Upper) - Clarity, illumination ☳ Thunder (Lower) - Arousing, shock Lightning (fire) and thunder together—the storm that clears the air.

Sources

Lines

Line 1: 履校滅趾無咎

履jùsandaled feet

校xiàofettered

滅mièmiss

趾zhǐthe toes

無wúno

咎jiùblame

Line 2: 噬膚滅鼻無咎

噬shìbiting

膚fūtender meat

滅mièand burying

鼻bíthe nose

無wúbut no

咎jiùblame

Line 3: 噬腊肉遇毒小吝無咎

噬shìbiting

腊xīpreserved

肉ròumeat

遇yùand encounter

毒dúdecay

小xiǎosome small

吝lìnembarrassment

無wúbut no

咎jiùblame

Line 4: 噬乾胏得金矢利艱貞吉

噬shìbiting

乾gāndry

胏zǐbony meat

得déacquiring

金jīnmoney

矢shǐand arrows

利lìworth

艱jiāndifficult

貞zhēnpersistence

吉jípromising

Line 5: 噬乾肉得黃金貞厲無咎

噬shìbiting

乾gāndry

肉ròumeat

得définding

黃huángyellow

金jīnmetal

貞zhēnpersistence

厲lìis difficult

無wúbut no

咎jiùblame

Line 6: 何校滅耳凶

何héwearing

校xiàoa cangue

滅mièmiss

耳ěrthe ears

凶xiōngunfortunate

Practical Guidance

There's an obstacle that won't resolve through discussion, compromise, or time. Someone is actively blocking progress. Maybe malice, maybe incompetence, maybe conflicted incentives like HAL's impossible directives. Doesn't matter. The obstruction must be removed. You need measure. The text's guidance is critical—unqualified hardness is too violent. Firing everyone, burning the whole system down. Unqualified gentleness is too weak. Endless meetings, hoping the problem fixes itself. You need both: clarity to see exactly what the obstruction is, decisiveness to remove it. The progression through penalties maps to modern disciplinary systems: warning, written warning, PIP, termination. Start mild. If the behavior continues, escalate. The point isn't punishment as an end. It's removing the obstruction so the mouth can close, so union can be established, so actual work can proceed instead of being eternally blocked. Here's the danger in the upper line: becoming the obstruction yourself through obstinate refusal to adapt. If you're deaf to warnings, if you've turned incorrigible, eventually the cangue goes around your own neck. Self-awareness prevents this. Ask yourself: am I removing an obstruction, or am I being obstinate? Sometimes the kindest thing is swift decisive action. The endless performance improvement plan that everyone knows is theater? That's cruelty disguised as mercy. Bite through cleanly. Remove the obstacle. Move forward.

Transformations

When changing lines appear in a reading, this hexagram can transform into another.

48The Well6 changinglines 5Waiting5 changinglines 28Great Preponderance5 changinglines 29The Abysmal5 changinglines 39Obstruction5 changinglines 46Pushing Upward5 changinglines 57The Gentle5 changinglines 7The Army4 changinglines

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