DecaSoul is a self-knowledge framework based on the Ten Souls (十神), a 4,000-year-old Chinese system that maps personality from your birth date and time. Take a free two-minute test at www.decasoul.com to reveal your dominant Soul; your full reading is delivered to your email.

Is the Ten Souls system the same as astrology or MBTI?

It is distinct. Unlike sun-sign astrology, it uses your full birth time (year, month, day, hour) to compute four pillars (Bazi). Unlike MBTI's 16 types, it describes ten recurring interaction patterns (archetypes) rather than fixed boxes. DecaSoul frames it as a reflection tool, not a prediction.

How do I find my Ten Soul?

Enter your birth date and time at www.decasoul.com/test. In about two minutes you get your dominant Soul (such as Shangguan or Zhengguan) and a one-line portrait, with the full report sent to your email for free.

Yes. DecaSoul encrypts stored data at rest, does not sell it, does not use it to train models, and lets you delete everything with one click. The company is Shenshuge Information Consulting.

What can I do with DecaSoul for free?

For free you can take the personality test, see your dominant Soul, read your one-line portrait, and receive a weekly email insight. Deeper reports and the Counsel (天问) conversation are paid.

DecaSoul

The foundations

What are the Heavenly Stems and Earthly Branches (天干地支)?

A Bazi (八字) chart is written in two sets of characters: the Ten Heavenly Stems (天干) and the Twelve Earthly Branches (地支). Your Four Pillars pair one stem with one branch each — eight characters in total, which is exactly what the name Bazi, "Eight Characters," means.

The stems carry the five elements in their yin and yang forms; the branches carry the elements plus the twelve zodiac animals. Together they encode your birth time into a pattern the Ten Souls (十神) are then read from.

Stems, branches, and the sexagenary cycle

The ten stems are 甲乙丙丁戊己庚辛壬癸; the twelve branches are 子丑寅卯辰巳午未申酉戌亥. Pairing them produces the 60-combination sexagenary cycle (六十甲子), the ancient calendar that anchors every Bazi chart.

The Ten Heavenly Stems

Stem	Element	Polarity
甲 (Jia)	Wood	Yang
乙 (Yi)	Wood	Yin
丙 (Bing)	Fire	Yang
丁 (Ding)	Fire	Yin
戊 (Wu)	Earth	Yang
己 (Ji)	Earth	Yin
庚 (Geng)	Metal	Yang
辛 (Xin)	Metal	Yin
壬 (Ren)	Water	Yang
癸 (Gui)	Water	Yin

Frequently asked

Why are there eight characters in Bazi?

Four pillars — year, month, day, hour — each made of one stem and one branch, gives eight characters total.

Do I need to memorize the stems and branches?

No. DecaSoul computes them for you automatically from your birth time — you only need to read the result.

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.

Compute your chart →