BaZi History: How Four Pillars Began
BaZi (Four Pillars) uses a stem and branch for each birth year, month, day, and hour, forming eight characters that define the natal chart.
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BaZi (Four Pillars) uses one stem and one branch for each birth year, month, day, and hour—a total of eight characters. Stems and branches first recorded time and were only later used to discuss character and luck. See BaZi Charting for the charting steps.
Stems and branches first served the calendar
The ten Heavenly Stems and twelve Earthly Branches were already used to record days on Shang and Zhou oracle bones. One cycle contains sixty Jiazi. The Four Pillars simply apply the same symbols to year, month, day, and hour. Once the chart is set, the day stem represents the self. The other seven characters are read for support, control, and draining, then layered with major luck and annual luck.
From three pillars to Ziping
The Han dynasty Book of Han: Treatise on Arts and Letters listed divination texts, while Lunheng discussed “received qi,” linking the moment of birth with innate disposition. Tang scholar Li Xuzhong read destiny from the three pillars of year, month, and day. Around the Northern Song period, Xu Ziping added the hour pillar, completing the Four Pillars. Later scholars compiled the Yuanhai Ziping tradition, hence the name Ziping method. Modern charting software still uses this framework.
Sources differ on who first used the hour pillar. It is enough to follow the standard account that credits Xu Ziping with establishing the completed system; there is no need to force its invention back into remote antiquity.
Imperial catalogues are not scientific validation
The Ming Yongle Encyclopedia and Qing Complete Library of the Four Treasuries included fate-analysis books, and the Imperial Astronomical Bureau managed calendars and related arts. This shows that the material was catalogued as scholarship; it is not endorsement by modern experiments.
The month pillar follows solar terms, while the hour pillar may require longitude and True Solar Time corrections. See BaZi Charting.
Read in order: Heavenly Stems and Earthly Branches, Five Elements, Ten Gods, and Useful God. Charting: Ming Ming Guan Zhi BaZi.
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Friend combining Officer/Killings: students tense the moment they hear it. It is not that mysterious. Compare the structure before judging good or bad.
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The moment students hear Wealth combining Officer, they often think on the stems the Wealth star and Officer star will, like Friend combining Wealth.
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The moment students hear Wealth and Seal on the same stage, they easily jump straight to Wealth breaking Seal. Read it with the full chart and luck cycles.
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The moment students hear Officer/Killings, the face changes first. Books write lawsuits, petty people, illness and disaster.
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The moment students hear Killings generate Seal, they think this is a good pattern: there is pressure, there are noble people, one can become a great vessel.
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The moment students hear Output combining Officer/Killings, they often jump to Hurting Officer seeing Officer. Both words have Output, both have Officer.
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The moment students hear Indirect Seal taking Food, they think of harming children, harming appetite. The face looks worse than hearing Officer/Killings.
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