Hexagram 21 of 64
Biting Through
shi ke · 噬嗑
TL;DR
- ◈Hexagram 21, Biting Through, is summarized by the Judgment: Biting Through has success. It is favorable to let justice be administered.
- ◈Its structure is Fire above Thunder; read the trigram interaction before treating it as a simple label.
- ◈Core keywords: decisiveness, justice, obstacles, resolution.
By the Numbers
- #21
- King Wen Order
- Biting Through in the 64-hexagram sequence.
- 2
- Trigrams
- Fire above Thunder.
- 6
- Lines
- Each hexagram is read from bottom to top.
Classical Context
Hexagram 21, Shì Kè (噬嗑), is the hexagram of Biting Through — decisive action to remove obstacles and enforce justice. Composed of Lí (☲ Fire) above and Zhèn (☳ Thunder) below: fire and thunder combine — illumination reveals the obstruction, and decisive energy bites through it. The image is of jaws biting through something stuck between the teeth.
This expanded note is adapted from the long-form hexagram draft as cultural and textual context; a live reading still depends on the question, changing lines, and the full transformation pattern.
Six-Line Theme Map
I Ching lines are read from the bottom upward. This map runs from the initial line to the top line so the Judgment, Image, and moving-line position can be read together.
- L1
初九 · 履校灭趾
Wearing枷锁 on toes — early correction
- L2
六二 · 噬肤灭鼻
Biting skin, nose disappears — too harsh
- L3
六三 · 噬腊肉
Biting cured meat — encountering obstacles
- L4
九四 · 噬干胏
Biting dried sinew — perseverance rewarded
- L5
六五 · 噬干肉
Biting dried meat — difficult but fair
- L6
上九 · 何校灭耳
Carrying枷锁, ears destroyed — severe punishment
Deep Reading
Biting through the obstruction
Shi Ke uses the image of something stuck between the teeth. The situation can no longer flow around the obstacle; it must be identified and removed. Fire above reveals the obstruction, while thunder below supplies the force to act. Clarity and decisiveness need each other.
- •Fire without thunder sees the problem but does not act.
- •Thunder without fire acts before the facts are clear.
- •The Judgment's legal language points to formal correction, not private vengeance.
- •The line texts test whether correction is early, excessive, difficult, fair, or too late.
Clear penalties and proportional force
The Image says ancient kings made penalties clear and laws orderly. This is a restraint on force. Shi Ke does not simply say to be harsh; it says obstruction should be handled through visible standards, proportionate response, and perseverance when the matter is tough.
- •The first line shows early correction before harm grows.
- •The second line warns that even a soft target can be handled too harshly.
- •The fourth and fifth lines describe difficult cases that require perseverance.
- •The top line shows what happens when warnings are ignored until punishment becomes severe.
Reading Shi Ke in a live question
- Conflict or blockage
- Name the specific obstruction before acting. Shi Ke favors direct handling when the problem is real and avoidance is prolonging damage.
- Rules, compliance, or legal matters
- Use transparent procedures and appropriate advice. The hexagram's legal imagery is symbolic guidance, not a substitute for professional legal judgment.
- Personal boundaries
- A boundary may need to be stated plainly. Keep the response proportionate so correction does not become another injury.
Source Notes
- Primary text
- This reading follows the Zhouyi Shi Ke Judgment, Image, and line statements, especially legal proceedings, thunder and lightning, clear penalties, and the progression of biting through difficult material.
- Zhouyi: Shi Ke Judgment, Image, and line statements
- Method boundary
- Shi Ke should not be read as permission for vigilantism, intimidation, or legal conclusions. Formal disputes require qualified professional advice.
- CosmicTao editorial method note
Interpretation
Yes, with decisive action. Remove the obstacle.
Upper Trigram
Fire
Lower Trigram
Thunder
The Judgment (King Wen)
Biting Through has success. It is favorable to let justice be administered.
The Image
Thunder and lightning: the image of Biting Through.
Keywords
FAQ
What is Hexagram 21 (Biting Through)?
Biting Through has success. It is favorable to let justice be administered.
What is the geometric structure of Hexagram 21?
Hexagram 21 acts with the upper trigram Fire and the lower trigram Thunder.
What are the core themes of Biting Through?
The core themes and meanings include: decisiveness, justice, obstacles, resolution.