Overview
Duration — 雷风恒 (Heng) — endurance.
The Hexagram
- Upper Trigram: Zhen Thunder
- Lower Trigram: Xun Wind
- Chinese Name: 雷风恒 (Heng)
- English Name: Duration
- Key Meanings: Endurance. Thunder and wind together — long-term commitment through complementary forces.
The Judgment (Guà Cí)
Duration. Success. No blame. Perseverance furthers. It furthers one to have somewhere to go.
The Image (Xiàng Cí)
Thunder and wind: the image of Duration. Thus the superior man stands firm and does not change his direction.
Symbolism Deep Dive
Thunder over Wind. Thunder (Zhen, arousal, the masculine, sudden force) above; Wind (Xun, penetration, the feminine, gentle persistence) below. Thunder and wind are the most dynamic pair in nature — one erupts, the other persists. Together they represent duration not as static permanence but as dynamic equilibrium. The marriage of sudden force and gentle penetration: the relationship, the career, the practice that lasts because it contains both intensity and steadiness.
Modern Application
Heng addresses the challenge of sustaining anything — a marriage, a career, a creative practice, a business. The insight: duration requires complementarity, not sameness. Thunder without wind becomes exhausting. Wind without thunder becomes aimless. Modern application: in relationships, balance passion (thunder) with daily kindness (wind). In work, balance intense projects with steady habits. The superior man ‘does not change his direction’ — not stubbornness, but the stable axis around which dynamic forces can safely turn.
Key Themes
- Each theme here extracted from the hexagram’s core teaching
“The I Ching Decoded” video series — Day 36.