Mysticism June 11, 2026 2 min read

Meaning of the Eulsa (乙巳) Ilju — Personality, Structure, and the 42nd Pillar of the Sexagenary Cycle

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OIYO Research Team Contributor

The Eulsa (乙巳) Ilju is the 42nd pillar of the sexagenary cycle. It consists of the Heavenly Stem Eul (Yin Wood), representing a flexible, climbing vine, sitting atop the Earthly Branch Sa (Snake), representing insight. It evokes the image of a vine winding around a snake—a figure of brilliant, spreading wit.

At a Glance

CategoryContent
Hanja乙巳
CompositionHeavenly Stem Eul (Yin Wood) + Earthly Branch Sa (Snake, Fire)
Nabeum (Phonetic Element)Bokdeunghwa (覆燈火, Lamp Light)
Ilji 12 Stages of LifeMokyok (沐浴, Bathing)
Ilji 10 Gods (Main Qi)Sanggwan (傷官, Hurting Officer)
Corresponding Years1965 · 2025
Key KeywordsEloquence, Charm, Strategy

Personality and Temperament

The Eulsa Ilju is a strategic type with excellent eloquence and charm. With the talent and flexibility of the Sanggwan (Hurting Officer), they make their presence felt in any setting.

  • Strengths: Brilliant oratorical skills, charm, and flexible strategy.
  • Points of Caution: If words precede action, gossip may follow. The more silk-like the tongue, the more it needs a sheath.

Structural Reading — Myeongri Interpretation

The Eul (乙) Day Master sits atop the Sa (巳) Earthly Branch. Based on the main qi of the Ilji (Day Branch), the 10 God is Sanggwan (傷官), and the 12 Stages of Life is Mokyok (沐浴). The Sanggwan is the star of eloquence and creativity—the ability to break molds through expression is both their charm and the seed of potential gossip. Being in the stage of Mokyok (Bathing), it is a structure where senses and charm shine, but fluctuations also accompany them.

In terms of Nabeum (Phonetic Element), it belongs to Bokdeunghwa (Lamp Light), a classification often used in traditional Myeongri alongside other pillars sharing the same Nabeum.

Learn More


The Ilju is the central axis of a Saju chart, but it is only two of the eight characters. Its manifestation varies greatly 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.