Trigram ☳

Zhen 震: Thunder

Symbol

☳ 震

Natural image

Thunder

Quality

the arousing, movement

Family role

Eldest son

Lines, bottom to top

100 (1 = solid yang, 0 = broken yin)

A trigram is a stack of three lines. Each hexagram is two trigrams: one below (the lower, inner or earlier situation) and one above (the upper, outer or later situation). Zhen appears in sixteen of the sixty-four hexagrams, eight times as the upper trigram and eight as the lower.

Zhen as the upper trigram

• 16 Enthusiasm
• 32 Duration
• 34 Great Power
• 40 Deliverance
• 51 The Arousing
• 54 The Marrying Maiden
• 55 Abundance
• 62 Small Preponderance

Zhen as the lower trigram

• 3 Difficulty at the Beginning
• 17 Following
• 21 Biting Through
• 24 Return
• 25 Innocence
• 27 Nourishment
• 42 Increase
• 51 The Arousing

See also the eight trigrams.

Cite this page

The Free I Ching. "Zhen 震: Thunder." https://thefreeiching.com/trigrams/zhen (updated 2026-10-07).

The I Ching is a tool for reflection, not a prediction. Nothing here forecasts events or replaces professional advice. Short quotations with a link back are welcome. Please do not republish a page in full. The open data files at /data are licensed CC BY 4.0.

Updated October 7, 2026. Markdown version