Bazi

Astronomy & calendars

Bazi, or the Four Pillars, encodes year, month, day, and hour with the ten Heavenly Stems and twelve Earthly Branches. The resulting eight characters are read through correlative cosmology.

HISTORICAL RANGE: Medieval Chinese developments; major later schools
CULTURAL SETTING: China and East Asian cultural networks

Contemporary chart of twelve cyclical stages used in Four Pillars practice — A contemporary teaching chart showing one strand of Four Pillars vocabulary.
ZZANGGA05 / Wikimedia Commons · CC BY-SA 4.0

DOCUMENTED CULTURAL HISTORY

A sourced introduction.

Historical context, living practice, collection imagery, and further reading are presented together. Every image links to its source and license record.

Origin & historical context

Chinese birth-time methods changed across centuries. Later tradition associates influential models with Li Xuzhong and Xu Ziping, while received manuals reflect substantial Song, Ming, and Qing development.

Core symbols & methods

Each pillar contains a stem and branch. Interpreters compare seasonal strength, the five phases, relationships to the day stem, and cyclical periods; schools weight these factors differently.

Geography & cultural setting

China and East Asian cultural networks

Bazi, or the Four Pillars, encodes year, month, day, and hour with the ten Heavenly Stems and twelve Earthly Branches. The resulting eight characters are read through correlative cosmology.

Modern practice & interpretation

Bazi remains a living consulting and publishing tradition and has been widely digitized. Automated charts reproduce selected rules, not a neutral or complete tradition.

Sources & further reading

Cultural sensitivity notes

Birth data is personal information; examples should be fictional or used with consent.

CONTEXT, NOT INSTRUCTION

RESPONSIBLE CONTEXT

This page is intended for cultural and historical learning. It will not present the tradition as scientifically proven or make medical, financial, or supernatural guarantees.