BaZi for Beginners: What Each of the Eight Characters of the Four Pillars Stands For
When someone sends me a BaZi chart to look at, my first sentence is always the same question: how did you fix your hour of birth?
Six times out of ten, the person cannot answer.
Eight characters are four pairs of stems and branches
BaZi is not mysterious; it is a timetable. The year, month, day and hour of birth are each converted into a pair of stem and branch — the year pillar, the month pillar, the day pillar and the hour pillar, four pairs and eight characters in all, which is why it is called the "Four Pillars" or the "Four Pillars and eight characters" (Source 1).
There are ten heavenly stems and twelve earthly branches, and paired two by two they form sixty combinations: the sixty stem-and-branch pairs (Source 2). So those eight characters are not random Chinese characters; they are four coordinates taken from the sixty-pair cycle.
The hour of birth matters a great deal: a day holds twelve two-hour periods, each of them two hours long. For people born around eleven at night to one in the morning, schools still disagree over whether to count the day that is ending or the day that is beginning — this is not a mystical question but a question of convention. Next time a chart is cast, get that cleared up first.
What each of the four pillars stands for
The year pillar: mostly used for family background and the circumstances of the era, that is, "what kind of year you were born in".
The month pillar: commonly read as the environment you grew up in and the influence of your parents; it is also the starting point for arranging the major fortune cycles.
The day pillar: its heavenly stem is "me", known in the terminology as the Day Master; its earthly branch is mostly associated with a spouse and marriage.
The hour pillar: mostly associated with later life and children, and it is the last pillar to be settled.
These correspondences are the common divisions used in fate calculation; schools differ on details, but the main framework is shared. My own experience is this: do not rush to look at the four pillars — first find the heavenly stem of the day pillar. Who "me" is on that chart is the premise of every reading that follows. I wrote my own four pillars on a sticky note and left it there for three months before I could, for the first time, look at a chart without counting my way to it.
"Top up whatever is missing" does not hold
The most popular line of recent years is "your BaZi lacks metal, so you have to top up metal".
But fate calculation looks at the overall strength and flow of the structure, not at topping up whatever is missing. The character that is missing may be precisely one your whole structure has no need of; and a judgment such as "weak Day Master" describes strength relationships within a five-phase structure and has no direct connection with whether your body is healthy.
A more practical way to use a chart: first look at whether the eight characters show an obvious skew — one kind of phase appearing far more, or far less, than the rest; then look at where the Day Master sits; only after that come the favourable and unfavourable elements. To skip the first two steps and jump straight to "what to top up" is to use a subject meant to be calculated as though it were a magic phrase.
The three positions to look at first on any chart
The first is the heavenly stem of the day pillar, that is, "me". The second is the month pillar, which fixes the solar term and the starting point of the major fortune cycles. The third is the place where the five phases are most unevenly distributed across the whole chart.
Once those three are clear, go back and read other people's interpretations, and you will find that many claims do not hold up — because they never even asked which two-hour period you were born in.
Tools on this site (for entertainment)
This site offers an entertainment-oriented process: describe your situation clearly → get a method suggestion → read the chart and the interpretation → export the result if you want to keep it. The content is for entertainment and self-reflection only; it promises no prediction and is not decision advice.
This article was last checked on 19 September 2026. Traditional divination has many schools and a long history, and their formulas and versions do not fully agree; the text relies on publicly verifiable sources, and for dates and calendars please refer to the latest official publication.
Disclaimer: This article covers traditional culture and folk custom. It is for entertainment and self-reflection only, and does not constitute medical, psychological, investment, legal or marital decision advice. Please do not submit sensitive personal information such as ID numbers or detailed addresses. If you experience persistent insomnia, anxiety or physical discomfort, please consult a doctor or a qualified professional.
Sources
- "BaZi" (《八字》) — Wikipedia: https://zh.wikipedia.org/zh-cn/八字 (accessed 19 September 2026)
- "Gan Zhi" (《干支》) — Wikipedia (the entry "heavenly stems and earthly branches" redirects here): https://zh.wikipedia.org/zh-cn/干支 (accessed 19 September 2026)
- Method page on this site: BaZi Chart: https://zhanbumizhi.top/en/methods/bazi (accessed 19 September 2026)