BaZi: birth data and personal timing.
A BaZi chart does not predict a life. It maps the materials a person arrived with.
BaZi is a sister discipline to feng shui, not a branch of it. Feng shui reads the place. BaZi reads the person. Treating them as the same thing is the error this cluster is built to prevent, and it is the reason we wrote a separate page for each.
What this page is not
This is not a fortune-telling page. It will not tell you when you will marry, what job to take, or what year your luck turns. Said once, calmly. Moving on.
The four pillars at overview altitude
A BaZi chart has four pillars: Year, Month, Day, and Hour. In the tradition, the Year pillar carries ancestry and inherited context. The Month pillar carries parents, the formative environment, and the season a person was shaped inside, and is the traditional pillar for career. The Day pillar carries the self, with the day branch read as the spouse palace. The Hour pillar carries children, late life, and hidden talent.
Each pillar is built from two characters. The upper character is a Tian Gan, "Heavenly Stem". The lower character is a Di Zhi, "Earthly Branch". Two characters per pillar, four pillars, eight characters in total, hence Ba Zi, "eight characters".
One technical caveat that catches February births. BaZi uses the solar calendar, not the lunar one. The year boundary sits at Li Chun, "start of spring", around 4 February. Anyone born in early February needs their pillars computed against the solar terms. Otherwise the chart gets miscast by a full year.
The day master
The Heavenly Stem of the day pillar is the chart's protagonist. Practitioners call it the day master. There are ten possible day masters, one for each stem, and the rest of the chart is read in relation to it.
A pillar you can name is a tendency you actually watch. The tradition reads a Yang Wood day master as upright and growth-oriented, the way a tall tree reaches. BaZi practitioners interpret Yin Water as adaptive and quietly persistent, the way a small stream finds its level. These are framing images, not verdicts. The day master does not make anyone anything. It names a tendency the tradition has watched for centuries.
The Ten Gods at overview altitude
The Ten Gods are the relational vocabulary BaZi uses to describe how the other seven characters relate to the day master. They group into five pairs: Self and Peer, Output, Wealth, Officer, and Resource. The names are structural rather than ethical. A Seven Killings star is a pressure pattern, not a person of seven crimes. Full treatment belongs to a future dedicated cluster on BaZi.
What BaZi can and cannot do
In the tradition, a chart can sketch temperament. It can name seasons of attention in the luck cycle. It can surface favourable elements. It can frame a decision a person already has to make.
It cannot predict events. It cannot choose a partner. It cannot replace due diligence. It cannot substitute for the lived life. Your future is not a thing a chart delivers. It is a set of tendencies and seasons the chart can surface.
How BaZi relates to feng shui
This is the load-bearing paragraph. BaZi reads the person. Feng shui reads the place. Together, a practitioner arranges the place to support the person. The Kua number arranges space and lives entirely on the Compass School side of feng shui. If you want the personal layer that belongs to feng shui itself, use the feng-shui-side Kua calculator, which arranges space rather than reading the person. For the broader frame, see what feng shui itself reads. BaZi is its own discipline with its own apparatus and is not a feng shui tool.
On "BaZi compatibility readings"
There is a gift-shop version of this discipline that promises marital outcomes from matching animal signs. The tradition does something quieter. It reads relational patterns between two charts as tendencies, not as verdicts on a marriage. Said once, calmly. Moving on.
Two things if nothing else
Find out your own day master using a reputable calculator or a practitioner. Hold whatever shows up as a working hypothesis, not a verdict.
Where to go next
Ten seconds: name the four pillars to yourself, Year, Month, Day, Hour.
Five minutes: find your day master with a reputable BaZi calculator.
An afternoon: read an introductory book by a serious practitioner.
Deeper: work with a practitioner over years, not months.
Return to where feng shui ends and the sister disciplines begin for the overview. The timing sibling of this discipline is covered on the page on Qi Men Dun Jia as date selection and strategic movement, which reads the moment rather than the person.