Short answer: Yes, almost. Korean Saju (사주팔자) and Chinese BaZi (八字) build the same eight-character chart from your birth year, month, day, and hour, using the 10 Heavenly Stems and 12 Earthly Branches. The calculation is essentially identical. The real difference is how the chart is read: Korean Saju leans on the Sip-sin (Ten Gods) and the Korean lunar tradition, while many Chinese BaZi schools emphasize the useful god (yong shen) and structural patterns. Same chart, different lens.
| Aspect | Korean Saju (사주) | Chinese BaZi (八字) |
|---|---|---|
| Chart format | Eight characters (saju palja) — 4 pillars × stem + branch | Eight characters (ba zi) — identical 4 pillars × stem + branch |
| Root | Tang-dynasty Four Pillars, transmitted into Korea | Tang-dynasty Four Pillars, developed in China |
| Calculation | Same 10 stems × 12 branches × Five Elements | Same — the math is the same |
| Main reading lens | Sip-sin (Ten Gods) — personality & relationships | Yong shen (useful god) — timing & luck structure |
| Cultural frame | Korean lunar calendar, life-cycle rites, naming | Classical Chinese metaphysics, Feng Shui pairing |
| Calendar / time | True solar time + lunar conversion | True solar time + lunar conversion |
The eight-character system yields roughly 2 million unique chart combinations down to a 2-hour birth window, and reads life in 10-year luck cycles (daewoon / da yun) across a 60-year sexagenary cycle.
Most English-speaking readers meet BaZi first because Chinese metaphysics has a longer English literature. So when they discover Korean Saju, it looks like a separate system. It is not — it is the same Four Pillars chart read inside a Korean tradition. The eight characters for a given birth moment are the same whether a Korean or a Chinese practitioner draws them.
What genuinely differs is emphasis. A Korean Saju reading foregrounds the Ten Gods (Sip-sin) — Companion, Output, Wealth, Officer, and Resource stars — which translate cleanly into plain language about character, work, money, and relationships. A classical BaZi reading often starts from day-master strength and the useful god, which is powerful for timing and luck-cycle calls.
Because the base chart is shared, this is a question of language and goal, not accuracy:
• Use Korean Saju if you want approachable self-knowledge — who you are, how you relate, what your next decade emphasizes — through the Ten Gods.
• Use Chinese BaZi if you want classical timing technique and a deep English study tradition.
Many serious students learn one and then study the other, precisely because the eight characters are identical and only the interpretive lens changes.
Whichever lens you choose, the Four Pillars is an interpretive map, not a forecast. It describes tendencies and timing windows based on centuries of recorded patterns. It is a tool for self-understanding — your decisions remain yours, and important matters still deserve professional advice.
Reference only — based on the classical Four Pillars (사주팔자 / 八字) tradition. Cheonmyeongdang generates readings from its Saju knowledge base; important decisions deserve professional consultation.