BAZI ARTICLE
Tai Yuan, Ming Gong and Shen Gong: Meanings, Worked Examples and Different Systems
Tai Yuan, Ming Gong and Shen Gong are auxiliary terms used in some traditions, not three missing birth pillars. Tai Yuan is associated with traditional conception ideas, Ming Gong is a derived life-palace position, and Shen Gong requires identifying the system first. Similar names do not make their different rules one hidden chart.
What do these three names refer to?
Separate the natal Four Pillars (the chart’s four birth-time columns: year, month, day and hour) from additional derivations. The pillars represent the birth year, month, day and hour under stated calendar rules; auxiliary positions depend on the chosen method rather than revealing three more birth times.
| Term | What to identify first | Do not equate it with |
|---|---|---|
| Tai Yuan | Month offsets, date back-counting or another rule | Actual conception date or clinical gestational age |
| Ming Gong | Month/hour inputs, start, direction and stem assignment | The Day Master or a complete Zi Wei chart |
| Shen Gong | Which tradition and explicit placement rule | A universal conclusion about later life |
How does a Wu-Chen month yield Ji-Wei Tai Yuan?
Under the common convention of advancing the month stem (the upper symbol in the birth-month column) by one and branch by three, Wu advances to Ji. After Chen come Si, Wu and Wei; the third branch is Wei. The result is Ji-Wei. This demonstrates a supplied month pillar (the two-symbol column for the birth month) without inventing a birthday.
That agrees with a Wu-Chen month/Ji-Wei Tai Yuan pair in Sanming Tonghui vol.6’s “Five Elements complete” examples. However, the inspected vol.2 Tai Yuan passage instead describes counting back roughly 300 days. The two-step convention is not its verbatim wording, nor does it establish agreement between all methods.
These are traditional rules, not conception records or medical measurements. A Tai Yuan entry cannot determine genetics, fetal health or an actual pregnancy date.
How is Ding-Mao obtained in the life-palace example?
Sanming Tonghui vol.2 gives a Jia-Zi year, third month and Xu hour. Place month one at Zi, two at Hai and three at Xu. Put the Xu birth hour at that Xu position, then advance both sequences until reaching Mao hour; the destination is Mao.
The Jia-year stem (the upper symbol in the birth-year column) rule gives Bing at Yin and Ding at Mao, producing Ding-Mao Ming Gong. This derives an auxiliary position rather than changing the birth month pillar. Application still requires stated month, hour and boundary conventions; an unknown hour leaves the dependent palace uncertain.
Why must you identify the system before calculating Shen Gong?
The “Placing body and life palaces” passage in Zi Wei Dou Shu Quan Shu uses another starting point: Yin for month one, forward to the birth month, then Zi hour at that location. Count hours backward for Ming Gong and forward for Shen Gong. In its ordinary first-month example, Zi hour places both at Yin; Chou hour gives Ming at Chou and Shen at Mao; Yin hour gives Ming at Zi and Shen at Chen.
This shows how opposite directions yield different locations; it does not require BaZi to adopt the Zi Wei palace chart. Zi Wei’s life palace, body palace and body-ruler star are separate items too. A shared character in their names does not make them identical.
If a BaZi report includes a separate Shen Gong, ask for its method and steps. A claim that it governs later life is an interpretation, not a life fact produced by the counting procedure.
Is a report necessarily incomplete without these three items?
No. A source using auxiliary positions and a report centered on the Day Master, month command (the seasonal conditions represented by the birth month) and Ten Gods (traditional labels for relationships to the birth-day element) can have different scopes. Understanding how the supplied information supports an explanation is more useful than equating more positions with greater accuracy.
Derived positions often reuse the same birth inputs; they are not independently acquired evidence. Using one to verify an uncertain birth hour still needs justification. A second output generated from an input cannot by itself establish that input as true.
Understanding these terms helps explain why reports differ and where a rule comes from. Health, family circumstances and later-life arrangements still require actual information.
Continue reading
- The life-palace walkthrough
Examine month/hour inputs and stem assignment.
- Lu Ming and Zi Ping references
Separate Na Yin (a separate named element classification for a complete pair of chart symbols), stem/branch and Day Master references.
- Input checks and an unknown hour
Distinguish consistency from a verified record.