Saju, written as 사주 or 四柱, is Korea's traditional Four Pillars birth-chart reading. It begins with a person's birth year, month, day, and hour, then interprets the elemental pattern created by that moment.

The word literally points to four pillars. Each pillar holds a pair of signs that describe seasonal timing, elemental balance, and the way a chart tends to respond to pressure, support, visibility, and change.

A Saju reading usually looks at temperament, relationship pattern, career rhythm, money style, health tendencies in a general lifestyle sense, and timing cycles. The goal is not to force a fixed destiny but to make recurring patterns easier to notice.

For modern users, the most useful question is often practical: what kind of rhythm helps this person make better choices without fighting their own nature?

A horoscope often starts from the position of the sun or planets. Saju starts from the Korean calendar conversion of the full birth moment. The reading is built around pillars, stems, branches, and the five elements rather than zodiac signs alone.

This makes Saju feel more like a chart map than a daily prediction. Daily timing can be added, but the foundation is the structure of the birth chart.