Hexagram 21 · King Wen order

No. 21 Biting Through

火雷噬嗑 · Shìkè · Thunder under Fire

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“Something blocks the way. Deal with it directly, then carry on.”

Lower trigram ☳ Thunder 震 — initiation & action

Upper trigram ☲ Fire 离 — clarity & brightness

Trigram: a three-line symbolic figure that forms one half of an I Ching hexagram.


Introduction

Thunder and lightning together: force with light on it. Biting Through pictures chewing through something hard to make the way clear.

In practice, this names a stretch where one obstacle has to be dealt with. Naming it plainly is most of the work.

The judgement

“Biting Through has success. It furthers one to let justice be administered.”

In plain words: dealing with the obstruction works here, and a fair process is what makes it clean.

Read it as a note about method. The bite has to be firm enough to break through and fair enough to hold afterwards.

Core themes

  1. One obstacle stands in the way. Find the exact one.
  2. Firmness works here. Avoidance does not.
  3. Handle it fairly, or it comes back in a worse shape.

Line-by-line overview

Six lines, read bottom to top — matching the figure above.

Each line describes one stage in an evolving situation. Line 1 marks the earliest, foundational beginning; line 6 shows where the pattern has run its course. Open a line to read it.

Line 1 初九
Feet in the stocks — stopped early

At the base, movement is blocked from the start, and the old line finds no fault in it.

A stop at this stage prevents a larger problem later.

Being halted early is cheaper than being halted late.

Line 2 六二
Biting through tender meat — the nose disappears

Here the obstacle is soft, and the bite goes deeper than it needs to.

The old image is a bite so deep that the nose vanishes.

Ease does that.

Line 3 六三
Biting old dried meat — something putrid turns up

At this level the obstruction is stale, and biting into it is unpleasant.

The old line allows a small humiliation and no great fault.

Old problems rarely open cleanly.

Line 4 九四
Biting dried gristly meat — metal arrows arrive

Here the obstacle is genuinely hard, and this line has the tools for it.

The old image is receiving metal arrows: something made for difficult work.

Persistence through the difficult bite is what this line asks for.

Line 5 六五
Biting dried lean meat — yellow gold arrives

At the centre, the bite lands and the result is valuable.

The old line adds that the danger is kept in view throughout.

Success here does not remove the need for care.

Line 6 上九
The cangue around the neck — this goes badly

At the top, the obstruction has closed around the whole person.

The old image is a wooden collar that hides the ears: no warning gets through.

Ignoring early stops tends to produce this line.

Summary

Read as a whole, this figure asks you to bite through one real obstacle. Name it exactly, act firmly, keep the handling fair, and do not wait until it closes around you.


Short reads from the blog. A changing line is a line that may shift as a situation moves.

If you would like to browse all 64 hexagrams, visit All 64 Hexagrams.

If you would like to learn about static hexagrams and the interpretation rules for changing lines within I-Ching, please visit our general guide: Understanding Changing & Static Lines.

How to use this page. Read the figure, then the judgement, then the lines in order. A reading ends with an observation about yourself — never with a verdict about what will happen.