Tian De and Yue De in BaZi: The Virtue Stars Made From the Leftover Degrees

A woman in her fifties brought me a printout with three characters highlighted. Two readers had told her she carried tian de, the heavenly virtue star, and she wanted to know what it protected her from. I asked what she did. She had run a family firm's office for nineteen years, and through most of that time she was the person everyone brought bad news to first.

Tian de (天德) and yue de (月德) are a pair of virtue markers in Chinese astrology, branch and stem positions the tradition reads as softening any malefic near them. They are also the only markers in the system computed from the part of the circle the twelve palaces cannot hold.

The chapter is 論天月徳 in the third juan of 三命通會, the Ming compendium first printed in 1578, and it opens with a definition most summaries skip.

What the book means by virtue

夫徳者，利物濟人，掩㓙作善之謂也.

Virtue is what benefits things and helps people, what covers the unlucky and does good. Protection never enters the sentence. The book files these markers under usefulness, which sits at the top of the chapter like a label on a bottle for readers hunting an exemption.

I open readings with that line because it moves the question from what you are spared to what you give.

A circle that refuses to divide

天徳者，謂周天有三百六十五度二十五分半.

The circle is 365 degrees and a fraction. Twelve palaces of thirty degrees come to 360, which leaves five and a quarter degrees with nowhere to go.

Chinese astronomers sized the du against the year, so a circuit of the sky carries the same count as the length of the year.

The compiler takes the surplus and hands it out. 散在十二佐宫，每宫各得四十四分. Each of the twelve assistant palaces receives about forty-four hundredths of a degree, and each one gets a name.

Then the phrase the whole idea rests on. 此十二位宫，能回㓙作善，乃曰天徳也，神藏煞沒. These palaces turn the unlucky toward the good because the spirit is hidden and the malefic is submerged, kept somewhere it cannot reach the surface.

The calendar had the same problem

A year of 365 and a quarter days does not divide into twelve lunar months either, and the calendar's answer was a thirteenth month inserted every few years.

The chapter draws on the 大統厯 for the tables further down, meaning the calendar in official use through the Ming, and takes its combination days from there.

Both solutions give the remainder a place instead of rounding it off. One adds a month to the year, the other adds a hidden name to each branch.

Where the sun and the moon meet

月徳者，乃三合所照之方，日月會合之辰.

Monthly virtue is the branch where a three-harmony group's light converges, the seat where sun and moon meet. Same furniture as the three harmonies piece, doing a different job. Each group meets in one branch, and the meeting leaves a stem behind.

申子辰會酉，出庚入垣於壬. The water group meets at 酉, its light leaves 庚 and enters the wall at 壬, so 壬 is its monthly virtue.

Two schemes wearing one name

The chapter prints a second derivation that disagrees with the first, credited to 壺中子. There, 天德 is the yang virtue and begins in the first month at 亥, one branch before the 乾 trigram, then walks forward month by month. 月德 is the yin virtue and begins at 未, one branch after 坤.

That version returns a branch for every month. The earlier method returns a stem for every group, and the compiler says so in one clause, 五星論天月徳，本後說，而以前為天月徳貴人干支之分也. Practice today follows the later account, and the earlier one is read as the noble's stem-and-branch assignment.

Two derivations, printed side by side, with no attempt to reconcile them.

What the chapter promises, and on what terms

The promise comes from 閻東叟. 貴神在位，諸煞伏藏，二徳扶持，衆㓙解散. When the noble holds its seat the malefics go into hiding, and the two virtues hold the chart up until the assembled disasters come apart.

Then the conditions, which the popular version of this material drops. 須要日上見，時上不犯尅衝刑破，方吉. The marker has to show on the day pillar, and the hour must not be attacking it with clash, punishment or destruction.

What it does once those hold is modest. 縱遇㓙禍，自然消散. Even meeting disaster, it dissolves on its own.

The class clause is the part I use most. 入貴格主登科甲，得君寵任 … 入賤格一生溫飽，福壽兩全. In a strong structure it reads as advancement, in a weak one as enough food, enough warmth, and full years. The class itself stays where it is. What the marker changes is how liveable that class feels, which for most people is the actual request.

One line from 子平賦 ranks the pair. 印綬得同天徳，官刑不犯，至老無殃，是天徳勝月徳也. Tian de outranks yue de because it works alongside the resource star.

The chapter also says 女命得之多為貴人之妻. I quote that to students as a dated assumption about who owned a woman's fortune, and leave it out of sessions.

The chapter keeps adding

After the two main markers the list grows. There are combination days, 天徳合 and 月徳合, then 月空, 月厭, 月煞, 歲干德, and 天赦日, four days a year on which heaven is said to pardon, followed by 天喜 and two spear-shaped markers. Every gap in a scheme gets a marker to fill it, and after enough filling the chart explains anything, which is the same as explaining nothing.

The ordering you cannot earn

Jung's synchronicity describes events that coincide in time, appear meaningfully related, and have no discoverable causal link. The virtue markers make a synchronistic claim in an old form. Nothing causes the disaster to dissolve, and the book never suggests anything does.

That page also carries the caution analytical psychologists attach to such claims, that a person has to take in the compensatory meaning of these experiences in order to enhance consciousness rather than merely build up superstitiousness. I keep that sentence where I can see it.

Marie-Louise von Franz described individuation as beginning with a wounding, after which the ego has to turn to a hidden regulating or directing tendency, an organizing center that Jung named the Self. The virtue markers read to me as this book's word for that center, a factor that orders a life from below your planning and cannot be earned by effort.

Then the book pulls its own idea back to earth with the definition it started from. 利物濟人. The marker works as a capacity, measured by what leaves you and lands on somebody else.

What I check in a reading

Three things. Which pillar carries the marker, whether the day stem answers to it, and what the person is currently doing for other people in the plain sense the chapter means.

The third sounds soft and it decides the reading. A man I saw in spring carried 月德 on the month pillar with a 壬 day stem. He managed a depot with forty staff and described his job as absorbing other people's panic before it reached the floor. 縱遇㓙禍，自然消散 was not a promise made to him. It was a description of his working day.

His wife asked me why he came home flattened every night, and he could not answer it himself. Nothing was attacking the family. The virtue was doing what virtue does, it had no off switch, and nobody had asked him to install one.

An exercise with the remainder

Take a sheet of paper and list the jobs you do that nobody assigned you. The one who remembers the birthdays. The one who tells the difficult client.

Under the list, answer one question. If this work disappeared tomorrow, whose week would break first. That answer points more reliably than the pillar does, and the BaZi calculator will show you which branch carries yours.

Back to the office

The woman with the highlighted characters needed to hear that the thing she called protection was a job, that she had been doing it unpaid since her thirties, and that the chart noticed before she did.

No chart predicts how a life goes. This one marks the place where the leftover gets a name, then asks who is holding it.

This article is offered for spiritual guidance and entertainment purposes only. It is not a substitute for medical, legal, or financial advice.