Mysticism June 11, 2026 2 min read

Meaning of the Eul-Yu (乙酉) Pillar — Personality, Structure, and the 22nd Sexagenary Cycle

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OIYO Research Team Contributor

The Eul-Yu (乙酉) pillar is the 22nd in the sexagenary cycle, where the Heavenly Stem Eul (Yin Wood), representing a flexible, winding vine, sits upon the Earthly Branch Yu (the Rooster), representing precision. It is often likened to a wildflower blooming in a crevice of a rock—delicate in appearance, yet unbreakable.

At a Glance

CategoryContent
Hanja乙酉
CompositionHeavenly Stem Eul (Yin Wood) + Earthly Branch Yu (Rooster, Metal)
Nabeum (Phonetic Element)Cheonjungsu (泉中水)
12 Stages of Life (Ilji)Jeol (絶 - Severance)
10 Gods (Main Qi)Pyeongwan (偏官 - Seven Killings)
Relevant Years1945 · 2005
Key KeywordsAdaptability, Aesthetic sense, Resilience

Personality and Temperament

Despite a delicate outward appearance, the Eul-Yu pillar is a practical type with strong survival instincts. They possess an excellent aesthetic sense and are capable of carving out a place for themselves in any environment.

  • Strengths: Strong adaptability, exceptional aesthetic sensibility.
  • Points to Note: Because their nerves are sensitive, they are prone to suffering in silence. Developing a sense of “insensitivity” (resilience to stress) is beneficial for their well-being.

Structural Analysis — Saju Interpretation

The Eul (乙) Day Master sits upon the Yu (酉) Earthly Branch. Based on the main Qi of the Day Branch, the 10 Gods correspond to Pyeongwan (偏官), and the 12 Stages of Life correspond to Jeol (絶). Pyeongwan is the star of challenge and responsibility—it creates a vessel that is forged through enduring pressure. The position of Jeol indicates a dynamic structure characterized by repeated cycles of change and resurgence.

In terms of Nabeum (phonetic elements), it belongs to Cheonjungsu (泉中水), a classification frequently used in traditional Saju analysis to group pillars sharing the same Nabeum.

Learn More


While the pillar is the central axis of a Saju chart, it represents only two of the eight characters. Its manifestation varies significantly depending on its relationship with the other characters, so please use this as a starting point for self-understanding.

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OIYO Research Team

Research Team

The OIYO research team structures material from psychometric scales, statistics, and academic literature. We name both the popular framing and its scholarly limits, so each guide works as a tool for reflection rather than a verdict.