Conception: the first qi after Severance
Content version · · Sources & references
Conception is the eleventh cell of the twelve life stages, after Severance. Where the ten Day Masters land, the five stem pairs that swap Severance and Conception, the conception origin and "self-conceived gold".
The short version9 min read
Conception is the eleventh cell of the twelve life stages, right after Severance: Yang stems land on Rooster, Rat, Rabbit and Horse, Yin stems on Monkey, Pig, Tiger and Snake, and the Sanming Tiyao calls it "receiving the embryo", the picture of a sprout in the earth that has just begun to hold qi.
- Conception is one step after Severance, and ten Day Masters fall on eight branches. Inside each pair of stems the two cells swap: Yang Wood is severed at Monkey and conceived at Rooster, Yin Wood the other way round.
- The second entry of the Sanming Tiyao is "receiving the embryo": things sprout in the earth and begin to hold qi, as a person receives qi from the parents.
- The stage Conception sets a Day Master against a branch. The conception origin (胎元) is a pillar worked out from the month pillar, usually by moving the month stem one place and the month branch three.

Read first
Twelve Life Stages and Void Branches: Two Tables, Two References ↗
Strong and weak Day Masters: references, relationship directions and evidence ↗
Receiving the embryo: the first qi in the earth
Conception is the eleventh cell of the twelve life stages, with Severance before it and Nurture after it. The Sanming Tiyao (三命提要), quoted in the Sanming Tonghui (三命通会), writes one entry for each cell, and this is the second, named "receiving the embryo":
Receiving the embryo: heaven and earth's qi meet, mist and haze make things; the thing sprouts in the earth and begins to hold its qi, as a person receives the qi of the parents.
The cell before it, Severance, took its image from a womb with nothing in it yet. Here the empty place receives its first breath: the qi of heaven and earth joins, a seed sprouts in the soil, and the book compares it with a person receiving the qi of father and mother. The name moves from "nothing" to "something has begun", which is the position of Conception in the whole chain: Severance is empty, Conception holds qi, and only later does the thing take shape.
Landing sketch: positions come from the twelve-stage table of the site engine; Yang Fire and Yang Earth share the Rat, Yin Fire and Yin Earth share the Pig; each pair of arrows joins the Severance and Conception of one pair of stems.
Five pairs of stems: two branches, taken in turns
Set the five Yang and Yin pairs side by side and an orderly pattern appears: within one element, the Yang stem and the Yin stem use the same two branches for Severance and Conception, in opposite order.
Enlarge diagram · scroll sideways to read
The reason is "Yang forward, Yin backward". A Yang stem goes one step forward from Severance and a Yin stem one step backward, so the Severance of the Yang stem is exactly the Conception of the Yin stem of the same element, and the Severance of the Yin stem is the Conception of the Yang stem. Yang Wood is severed at Monkey, and Yin Wood is conceived at Monkey; Yin Wood is severed at Rooster, and Yang Wood is conceived at Rooster. Fire and Earth share one set of branches, which is why ten Day Masters occupy only eight branches.
In the sixty-cycle a Yang stem always pairs with a Yang branch and a Yin stem with a Yin branch, so only six day pillars put the Day Master on its own Conception branch: Bing Zi (丙子), Wu Zi (戊子), Ding Hai (丁亥), Ji Hai (己亥), Ren Wu (壬午) and Gui Si (癸巳). Pairs such as Yang Wood on Rooster or Yin Metal on Tiger do not exist among the sixty pillars. The Conception branch can of course appear in the year, month or hour pillar, and what is looked up is always the Day Master against that branch.
One word, two tables: the stage and the conception origin
Fate books have two things called "conception". One is the cell above: it takes the Day Master as its basis and asks what stage it is in on a given branch. The other is the conception origin (胎元), which takes the birth month pillar as its basis and works out one stem-branch pillar, standing for the month of conception. The Sanming Tonghui (juan 2) takes the second seriously and calls the conception month the "root and sprout of the four pillars".
Enlarge diagram · scroll sideways to read
The usual rule moves the month stem forward one place and the month branch forward three. For a Jia Yin month, Yang Wood moves to Yin Wood and the Tiger moves to the Snake, so the conception origin is Yi Si (乙巳). Counting from the Snake month to the Tiger month, both ends included, gives exactly ten months, the ten months of pregnancy.
The Sanming Tonghui is not content with that rule. Its example is the very chart of a Wu Zi (戊子) year and a Jia Yin month: people of its time often took Yi Si as the embryo straight away, without saying whether a leap month lay inside those ten months. The book argues for another count:
There is only one method: take the three hundred days before birth as the qi of ten months; that is the correct conception.
Three hundred days is exactly five rounds of sixty days, so the day pillar of the conception day equals the day pillar of the birth day; in the book's words, someone born on a Jia Zi day takes Jia Zi as the day of conception. A calendar check on one example: a person born on 20 February 2008 has the pillars Wu Zi year, Jia Yin month and Geng Yin (庚寅) day. Counting back 300 days gives 26 April 2007, and that day is a Geng Yin day too.
Enlarge diagram · scroll sideways to read
So one method hands back a month pillar and the other a date. Whenever the word "conception" turns up in a text, the first question is which of the two is meant.
"Self-conceived gold" in the Na Yin names: Gui Mao
The twelve stages are also applied to Na Yin: the Na Yin element of a pillar is put into the table to see which cell that element itself stands on. Ren Yin and Gui Mao both carry the Na Yin Gold Foil Metal (金箔金). Metal is born at Snake, so Metal is at Severance on Tiger and at Conception on Rabbit. In juan 1 of the Sanming Tonghui Ren Yin is called "gold that severs itself", and for Gui Mao the book cites a work called the Sanming Zuanju (三命纂局):
Gui Mao is gold that conceives itself. If it meets the furnace fire of Bing Yin or Ding Mao it is not counted as a ghost, because conceived gold becomes a vessel in the furnace.
Fire overcomes Metal, so fire is usually Metal's "ghost", the star that overcomes it. This line says that Gui Mao, a piece of gold standing on Conception, is not read that way when it meets the furnace fire of Bing Yin or Ding Mao, and the reason is "conceived gold becomes a vessel in the furnace": Conception is the start of receiving form, the gold has no fixed shape yet, and the furnace turns it into a vessel.
Three questions before reading
Ask for the basis first
When "conception" appears, decide whether it is the stage in the twelve-stage table or the conception origin worked out from the month pillar. The first asks about the Day Master, the second about the month pillar.
Then ask which element is looked up
The branches of the year, month, day and hour pillars can all be set against the Day Master; Na Yin is looked up with the Na Yin element itself, and the two methods can give different results.
A stage name is only a position
Conception is the eleventh cell of the table, not a pregnancy or a birth. Whether a chart has it and how much it weighs is read together with the other pillars.
Two exercises
The day pillar is Gui Si. Which cell is Yin Water on Snake?
Yin Water runs backward: its Severance is Horse, and one step further back is Snake, so it is Conception. Gui Si is one of the six day pillars with the Day Master on its own Conception cell.
The birth month pillar is Xin Chou. What is the conception origin?
The month stem Yin Metal moves one place to Yang Water and the month branch Ox moves three to Dragon, so the conception origin is Ren Chen (壬辰).
The cell before is Severance; the cell after is Nurture, which is the third entry of the Sanming Tiyao, "taking shape".
Questions readers ask next
Are Conception and the conception origin the same thing?
No. The twelve-stage Conception is a stage name that says where a Day Master stands on a given branch. The conception origin is a stem-branch pillar worked out from the birth month, for example Yi Si from a Jia Yin month. When the Sanming Tonghui talks about the conception month and the conception count, it means the second.
Why is Yang Wood conceived at Rooster but Yin Wood at Monkey?
Yang stems move forward and Yin stems backward. Yang Wood goes one step forward from Severance (Monkey) to Rooster; Yin Wood goes one step backward from Severance (Rooster) to Monkey. Two stems of one element use the same two branches in opposite order.
What does it mean if my day pillar sits on its own Conception cell?
Only six of the sixty day pillars put the Day Master on its own Conception branch: Bing Zi, Wu Zi, Ding Hai, Ji Hai, Ren Wu and Gui Si. That is a fact about position. A stage name predicts nothing, and its weight comes from the rest of the chart.
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Continue reading
Severance (绝): The Cell Where the Womb Is Still Empty, and Its Other Names ↗
Nurture (养): Ten Day Masters on Four Storehouses, and the Book's "Taking Shape" ↗
What is Na Yin in BaZi? Why Jia-Zi Gold in the Sea does not replace Yang Wood ↗


