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Formation of Life Force
In theory, the purpose of a conception pillar is to establish what the Qi/energy is like when life starts to form within the mother’s womb.
Derivation of Conception Pillar
From《三命通会》, the derivation of the conception pillar is based on this line “胎元之取,唯有一法,以當生前三百日爲十月之氣,乃是受胎之正.”
Alternatively;

Chart generated from MyBazi.com
The Early Heaven Pillars
Together with the natal Ba Zi chart, the conception pillar and the life pillar can be considered as the Early Heaven (“先天”) while the luck pillars are the Later Heaven (“后天”).
It is used commonly to divine what happens to a child after he or she is born. To a certain degree, this depends on the synchronicity and affinity of the reader with the child.
Application of Conception Pillar
In 《鬼谷子》, a hint of its application “if the birth sits on prosperous, one will be born in a wealthy family; if it meets on emptiness, poverty will give birth to complaints and resentment.”
In modern day applications, it is commonly used by practitioners to ascertain if a child will suffer from mental retardation, deformity or any other form of birth defects before he or she is born (caesarean births).
However, there are also concerns about the use of conception pillar because:
- Ø not everyone is born after 10 months
- Ø intercalations are not accounted for









may I ask.. if the baby is born before 10 months.. OR this child has caesarean birth, is the cpnception pillar still applicable?
Hi Giggs,
Yes, condition is you must know the month of conception. The whole idea is to know which 60JiaZi Pillar rules when the baby is conceived. Say if a baby is 1 month premature, then the conception pillar is now 9 months backwards.
cheers!
Zoe
Hi
My friend, a twin born in the late Zi hour. So is it correct for her to use the following day as DM ? Thus her conception pillar will be different from her twin brother?
Please enlighten. Many thanks.
Hi CJ,
For twins there are a few classical schools of thoughts and treatment for Day, Hour, Conception and Life Pillars.
For me, the crux lies on progressive Qi 進氣 and regressive Qi 退氣. A topic that is not well discussed in the market…
Here, I assume our members and readers understand that Yin-Yang 5 Elements are essentially talking about 5 essential life-animating energies each with its Yin-Yang stages/cycles.
I.e. In GENERAL terms, 甲 prefers progressive Qi flow. While, 乙 prefers regressive Qi flow. There are finer definitions when we consider 10-God Structures and each 60JiaZi.
In yr fren’s case, I assume they are adults or at least are well beyond 1st 10-yr luck pillar. Hence, Conception and Life palaces methods of moving one pillar forward or backward should not apply in technical BaZi analysis. They are Early Heaven Pillars.
cheers!
Zoe
Dear Zoe,
All my friends are confirmed Adult
I’ll take note of progressive Qi and regressive Qi and see how it relates to my wonderful life thus far
For my friend case, if I move forward the hour from late rat to early rat, logically, the day must also move forward right? I’ll check with her again and assess which chart is more accurate & share my findings.
Have a great week ahead!
Cheers
CJ