The eight trigrams

Mountain Trigram: 艮 ☶

Study gen when you want to understand endings, containment, restraint, and the structural role of stopping in the I Ching.

Updated April 1, 2026Produced by MahjongHouse

In short

Gen is open below and solid at the top. It often signals stillness, stopping, delimitation, and the moment when movement reaches a boundary.

Mountain Trigram: 艮 ☶. Diagram of the eight trigrams used as the wider structural context for this trigram entry.
The bagua is the reusable layer inside the oracle: once the eight trigrams are familiar, the sixty-four hexagrams become combinations rather than isolated symbols.

Three-line structure

艮 is written as ☶ and encoded as 001. Read from bottom to top, its lines are bottom yin, middle yin, top yang.

This matters because the I Ching is structural first. The character of 艮 begins with its exact line order, not just its later symbolic associations.

What 艮 contributes to a hexagram

Gen is open below and solid at the top. It often signals stillness, stopping, delimitation, and the moment when movement reaches a boundary.

When 艮 appears as a lower or upper trigram, it changes how the full hexagram is read by contributing its own pressure, orientation, and rhythm.

How to study it well

A strong way to study 艮 is to learn its line pattern, its natural image (山), and then notice where it appears inside hexagrams.

That approach keeps the trigram readable as structure, symbol, and part of a larger figure all at once.

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