Andrew Yao’s BaZi chart 姚期智
Computer scientist · Turing Award, 2000 · born 24 December 1946, Shanghai, China · date source: Wikipedia
Western zodiac sign: Capricorn.
No birth time has been published. The date fixes three of the four pillars; the fourth is one of twelve. Below, everything the date settles is computed, and everything that turns on the hour is cast all twelve ways — without picking one on anyone’s behalf.
In short
Andrew Yao’s day master is Yang Water: the Ocean.
Deep and far-reaching, with a plan for everything. The day master comes from the day of birth alone; about one person in ten shares it.
Quick answers
- What is Andrew Yao’s day master?
- Yang Water, the Ocean: born on a Water Monkey day (Ren Shen, 壬申).
- What is Andrew Yao’s zodiac sign?
- The Dog: born in a Fire Dog year (Bing Xu, 丙戌), counted from the Start of Spring.
- What is Andrew Yao’s bone weight?
- 2.7 liang to 3.7 liang, depending on the hour, which is not public. How it is worked out ›
- Is Andrew Yao’s birth time known?
- No published time, so the hour pillar is cast all twelve ways below.
Compare your chart with Andrew Yao’s
Birth dates only: day masters, day pillars and signs.
The three pillars the date fixes
Year
Indirect Wealth
丙 Yang Fire
戌 Dog
Month
Indirect Resource
庚 Yang Metal
子 Rat
Day
Day Master
壬 Yang Water
申 Monkey
Hour
?
?
one of twelve — see below
What the labels mean
Each pillar is two characters: a stem on top (an element, yin or yang) and a branch below (one of the twelve zodiac animals). The day stem is the day master — the person. The label above each other stem is its ten god (Shi Shen, 十神): what that element is to the day master.
Each animal also hides stems of its own, strongest first: the Dog hides Yang Earth (戊, Seven Killings), Yin Metal (辛, Direct Resource), Yin Fire (丁, Direct Wealth); the Rat hides Yin Water (癸, Rob Wealth); the Monkey hides Yang Metal (庚, Indirect Resource), Yang Water (壬, Friend), Yang Earth (戊, Seven Killings).
- Indirect Wealth (Pian Cai, 偏财)
- What you control, same polarity. Wealth that comes sideways rather than by salary — the uneven kind.
- Seven Killings (Qi Sha, 七杀)
- What controls you, same polarity. Pressure with nothing softening it: demand, risk, and whatever you answer to whether you chose it or not.
- Direct Resource (Zheng Yin, 正印)
- What produces you, opposite polarity. Straightforward support: what teaches, shelters and backs you.
- Direct Wealth (Zheng Cai, 正财)
- What you control, opposite polarity. Wealth held steadily — earned, kept, accounted for.
- Indirect Resource (Pian Yin, 偏印)
- What produces you, same polarity. Support of an indirect kind — the tradition treats it as nourishment that can also crowd out the Eating God (食神).
- Rob Wealth (Jie Cai, 劫财)
- Same element, opposite polarity. A peer who takes rather than shares — the tradition reads it as what draws on your resources through people close to you.
- Friend (Bi Jian, 比肩)
- Same element, same polarity as you. A peer: someone standing where you stand, competing for the same thing and equally able to share the load.
Day master
What the classic Di Tian Sui (滴天髓) says of this stem, word for word
Yang Water (壬) runs through to the river and can drain the qi of Metal. Its virtue is hardness within; it flows round and does not stagnate. Rooted below and Yin Water (癸) showing above, it charges heaven and rushes the earth. Transformed it has feeling; following, it makes good the other.
壬水通河，能泄金气，刚中之德，周流不滞，通根透癸，冲天奔地，化则有情，从则相济。
Born in a Rat month (Zi, 子), when Water rules the season. In that season Yang Water is thriving (Wang, 旺): the season is its own. (One of five seasonal states, Wang Xiang Xiu Qiu Si, 旺相休囚死, after the San Ming Tong Hui, 三命通會, book 2.)
Day pillar: Water Monkey (Ren Shen, 壬申)
The classic San Ming Tong Hui (三命通会) gives each of the sixty day pillars an image, its sound element (Na Yin, 纳音). For this one it is Metal of the Sword’s Edge (剑锋金), and it says:
Spear and halberd; greatly likes the Rat, Horse, Rabbit and Rooster.
The original Chinese
戈戟，大喜子午卯酉
This is what the book says of every Ren Shen day, not of Andrew Yao. The Ren Shen day pillar › (what the classic says at each birth hour, what the branch holds, and others born on one)
Elements in the six known characters
None of the six is Wood. The hour pillar’s two characters may supply it or may not — that depends on the hour. Hidden stems are not counted here.
All twelve hours, cast one by one
In all twelve hours the Yang Water day master reads strong. Whatever the hour, the support-and-restrain method favours Wood, Fire, Earth — the date alone settles it.
| Hour | Solar time | Hour pillar | Its ten god | Three tests | Strength | Favoured |
|---|---|---|---|---|---|---|
| Rat (子) | 00–01 | 庚子Metal Rat | Indirect Resource (偏印) | in season rooted backed | strong | Wood, Fire, Earth |
| Ox (丑) | 01–03 | 辛丑Metal Ox | Direct Resource (正印) | in season rooted backed | strong | Wood, Fire, Earth |
| Tiger (寅) | 03–05 | 壬寅Water Tiger | Friend (比肩) | in season rooted backed | strong | Wood, Fire, Earth |
| Rabbit (卯) | 05–07 | 癸卯Water Rabbit | Rob Wealth (劫财) | in season rooted backed | strong | Wood, Fire, Earth |
| Dragon (辰) | 07–09 | 甲辰Wood Dragon | Eating God (食神) | in season rooted outnumbered | strong | Wood, Fire, Earth |
| Snake (巳) | 09–11 | 乙巳Wood Snake | Hurting Officer (伤官) | in season rooted outnumbered | strong | Wood, Fire, Earth |
| Horse (午) | 11–13 | 丙午Fire Horse | Indirect Wealth (偏财) | in season rooted outnumbered | strong | Wood, Fire, Earth |
| Goat (未) | 13–15 | 丁未Fire Goat | Direct Wealth (正财) | in season rooted outnumbered | strong | Wood, Fire, Earth |
| Monkey (申) | 15–17 | 戊申Earth Monkey | Seven Killings (七杀) | in season rooted backed | strong | Wood, Fire, Earth |
| Rooster (酉) | 17–19 | 己酉Earth Rooster | Direct Officer (正官) | in season rooted backed | strong | Wood, Fire, Earth |
| Dog (戌) | 19–21 | 庚戌Metal Dog | Indirect Resource (偏印) | in season rooted backed | strong | Wood, Fire, Earth |
| Pig (亥) | 21–23 | 辛亥Metal Pig | Direct Resource (正印) | in season rooted backed | strong | Wood, Fire, Earth |
Each row is exactly what the full calculator would say for a birth in that hour. Strength comes from three tests: in season (De Ling, 得令) — born in the season of the day master’s own element; rooted (De Di, 得地) — the same element hidden in a branch; backed (De Shi, 得势) — as much support around it as drain. Two of three reads strong. The favoured elements come from support and restrain (Fu Yi, 扶抑): a strong day master wants draining, a weak one wants support. There are three other methods for the useful element — climate (Tiao Hou, 调候), bridging (Tong Guan, 通關) and disease and cure (Bing Yao, 病藥) — each from its own text; see the useful god page. Hours are solar time at the birthplace, so a clock time needs correcting first; and a birth after 23:00 falls in the late Rat hour, where the two schools disagree about whether the day has turned.
Andrew Yao’s bone weight (Cheng Gu, 称骨)
Lunar date: day 2 of the 12th month, Fire Dog year (丙戌年腊月初二). Its weights: year 0.6 liang, month 0.5 liang, day 1.0 liang — 2.1 liang before the hour. Over the twelve hours that makes 2.7 liang to 3.7 liang.
Bone weighing is a folk almanac sum over the calendar positions of the year, month, day and hour — not the elements, and not the chart above. How heavy is heavy? The tables and the spread ›
And yours?
You have your own birth time, so your chart needs no table of twelve — all four pillars, corrected to true solar time with the timezone actually in force where and when you were born.
About this page
This page computes; it does not interpret. The birth date is public and its source is linked; the birth time is not, so the hour pillar and everything that depends on it are set out all twelve ways.
Nothing here claims that anyone is who they are because of a chart, and nothing here forecasts years, health or lifespan for anyone living.
Your own 2027, month by month
The full report reads 2027 month by month from your own birth date, time and place.
US$9.88 launch price · US$12.88 from 6 February · 82 days left