The foundations

What is Yin and Yang (阴阳)?

Yin and Yang (阴阳) are the two complementary forces the Chinese tradition sees in everything — light and dark, active and still, giving and receiving. In Bazi (八字), every Heavenly Stem and Earthly Branch carries a yin or yang polarity, and that polarity shapes how your Ten Souls (十神) express themselves.

Yin and Yang are not opposites in conflict; they are two halves of one whole that turn into each other. The *I Ching* (易经) puts it simply: one yin, one yang — that is the Way.

Why polarity matters

In a Bazi chart, the same element can be yin or yang. A yang Wood (甲) expresses itself outwardly and directly; a yin Wood (乙) expresses itself subtly and adaptively. That single difference is what turns one elemental relationship into two distinct Ten Souls — the foundation of the system's precision.

Frequently asked

Is yang better than yin?

No. They are equal and complementary. Every person holds both; the balance between them is what matters.

How old is the concept of yin and yang?

It is rooted in the I Ching (易经), a tradition roughly 4,000 years old, and is the philosophical foundation of the 东方MBTI.

4,000-year tradition · Free to start · Private by design

See which of the ten Souls you are.

Take the free two-minute test. Your dominant Ten Soul appears instantly, and the full reading is sent to your email.