How Are Thiên Thọ and Thiên Tài Placed and What Do They Say on a Chart?

What Are Thiên Thọ and Thiên Tài in Tử Vi?

Thiên Thọ and Thiên Tài are both auxiliary stars of the Earth element, but their roles differ. Thiên Thọ belongs to the group of auspicious stars, governing longevity, health, peace and protection. Thiên Tài has two faces: it is a supporting star that softens the influence of bad stars, and also a shadowing star that makes good stars lose some of their brilliance. In the common understanding among Tử Vi (Vietnamese astrology) practitioners, Thiên Tài is a star that "supports the declining and not the flourishing", meaning that when a chart is declining it lends a hand, while when the chart is flourishing it pulls it down.

Neither star is a principal star, so neither decides the structure of a chart. They only add a thin layer of information on top of the foundation that is already there. For this reason, reading Thiên Thọ or Thiên Tài on its own while ignoring the principal star in the palace is the easiest way to read a chart wrongly.

How to Place Thiên Tài and Thiên Thọ According to the Year Branch of Birth

Thiên Tài is placed according to the Mệnh palace and the earthly branch of the birth year. The method: set the Mệnh palace as the year Tý, then count clockwise through Sửu, Dần, Mão, Thìn, Tỵ, Ngọ, Mùi, Thân, Dậu, Tuất, Hợi until reaching the earthly branch of the birth year, then stop and place Thiên Tài in that palace. For example, a person born in the year Kỷ Mão has Mao as the branch of their birth year. If the Mệnh palace sits at Tý, we count Tý, Sửu, Dần, Mão, stopping at Mão, so Thiên Tài lies in the Mão palace.

Thiên Thọ is placed according to the Thân palace and the earthly branch of the birth year, counting in exactly the same way but starting from the Thân palace instead of the Mệnh palace. From the position of the Thân palace, set that as the year Tý, count clockwise to the birth year branch, and wherever it stops, place Thiên Thọ in that palace.

The direct consequence: when Mệnh and Thân share the same palace, these two stars must coincide in one palace. When Mệnh and Thân are in different palaces, they are offset from each other by exactly the distance between those two palaces. This is why many people find that Thiên Tài and Thiên Thọ always travel as a pair on their charts.

Which Palace Do Thiên Tài and Thiên Thọ Fall Into According to the Year Branch of Birth?

Thiên Tài is counted from the Mệnh palace, so it always falls into the same functional palace for everyone with the same year branch; Thiên Thọ is counted from the Thân palace, and since the Thân palace changes with the month and hour of birth, only the number of steps counted from the Thân palace can be recorded. The table at the end of the article gives the functional palace position of Thiên Tài and the number of clockwise steps from the Thân palace for Thiên Thọ, corresponding to each year branch of birth.

How to read the table: take your own year branch of birth and look at the second column to learn which functional palace Thiên Tài falls into. For example, a person born in the year Sửu has Thiên Tài in the Phụ Mẫu palace, because the twelve palaces are arranged counterclockwise from Mệnh, so counting one step clockwise from Mệnh gives Phụ Mẫu. The third column records the number of steps counted clockwise from the Thân palace for Thiên Thọ; to arrive at a specific palace you must know where the Thân palace sits on the chart and then count on from there. This table is generated from the calculation core of the Tử Vi chart plotting tool, not from a rule peculiar to any school.

Why Do Some Books Say Thiên Tài Starts from the Thân Palace?

This is where the sources do not agree, and a writer needs to state clearly which approach they follow. The translation of Đẩu số tinh thành, page 31, records Thiên Tài as starting from the Mệnh palace, and the original Chinese text there is also 命宫 (Mệnh palace). The three charts printed in Số Tử Vi Kinh Nghiệm all match the approach of starting from the Mệnh palace. But page 40 of the same translation records it as starting from the Thân palace, while the original Chinese text on that page is also 命宫. This is a place where the translation differs from the original text, not two opposing schools.

The common placement, used by many books, is Thiên Tài starting from the Mệnh palace and Thiên Thọ starting from the Thân palace. This approach preserves the Mệnh, Thân duality that is the backbone of Tử Vi Đẩu Số, and it also matches the way of reading cause and effect presented by Master Thiên Lương. This article follows that approach. If a reader uses software that places them another way, the position of Thiên Tài may be off by a few palaces, so it is worth checking which approach the software uses before interpreting.

It is also necessary to distinguish clearly: Thiên Tài in Tử Vi is an auxiliary star of the Earth element, entirely different from Thiên Tài in the Ten Gods of Bát Tự (BaZi). In Bát Tự, Thiên Tài is one of the ten gods, referring to the relationship between the Day Master and other stems and branches, leaning toward unorthodox wealth. The two concepts share a name but belong to different systems and must not be confused.

Master Thiên Lương's Way of Reading Cause and Effect: Tho Is the Cause, Tai Is the Result

On the Ly so Viet Nam forum, member Long Đức summarised Master Thiên Lương's way of reading: Tho is the cause, Tai is the result; Thiên Tài starts from Mệnh, meaning destiny's addition and subtraction trims things down, subject to the root result that Thiên Thọ has produced. In other words, what we sow from the Thân palace (Thiên Thọ) decides the portion that is cut back or leniently treated at the Mệnh palace (Thiên Tài).

The passage Master Thiên Lương wrote about the two words Tai and Tho, quoted again on the same forum, expands further: Tai, besides meaning talent, also means to measure and cut back, while Tho means kindness. He interpreted the principle of Tai from Mệnh and Tho from Thân as the law of destiny's addition and subtraction, in which kindness is the part one trains in oneself. Taking an example of a chart for the year Đinh Hợi, he pointed out that Thiên Tài sits in the Bào palace with Cự Môn Hóa Kỵ, and Thiên Thọ sits in Phụ Mẫu in harmony with Thiên Lương, then read it as: this person bears the sacrifice of their own position because of a deficient Phúc Đức, so that their parents gain a gentle and virtuous reputation and their siblings live in peace.

The point to remember is that this way of reading is not a formula that yields a fixed result. It is a way of posing a question: which part of my life is being cut away, and which part am I making up for through my way of living. That way of asking is the useful part, not the palace numbers.

What Does Thiên Thọ in Mệnh and in Other Palaces Say?

Thiên Thọ in Mệnh usually gives a kind, gentle, humble, diligent person who lives by reason and dislikes noisy places. The downside is a lack of decisiveness, at times conservatism, and an aversion to friction that makes it hard to shoulder great responsibility. In career, such a person is patient and easy to work with, but also avoids risk and so advances slowly. In marriage, they are an attentive and readily forgiving partner. In wealth, they know how to accumulate but also easily spend money on others.

In other palaces, Thiên Thọ changes meaning according to the palace. In Phụ Mẫu, parents are gentle and likely to live long. In Phúc Đức, the family line is harmonious and ancestral blessings are abundant. In Điền Trạch, favourable for houses and land, especially when accompanied by Tả Phù, Hữu Bật, Văn Xương, Văn Khúc, Thiên Khôi, Thiên Việt. In Quan Lộc, work is light and official position is steady, though the person does not enjoy fighting for it. In Nô Bộc, one receives help from friends. In Thiên Di, one is calm when going out and rarely meets danger. In Tật Ách, it reduces illness, or if illness comes, one is rescued and treated in time; if it meets Thiên Lương, there are still disadvantages to health but misfortune often turns to good fortune.

What Does Thiên Tài in Mệnh and in Other Palaces Say?

According to traditional Tử Vi belief, Thiên Tài in Mệnh gives an outgoing, quick, sharp person with talent, but one prone to arrogance and self-importance, and that very trait drains away some of their own good fortune. This source also stresses the cause-and-effect aspect: as you sow, so shall you reap, so deceit and moral wrongdoing should be avoided. In career, such a person manages and adapts well, but if overly confident or impatient, finds it hard to keep things stable. In love, they are attractive and communicate well, but love freedom and easily feel tied down. In wealth, they easily meet luck and earn from many sources, but also easily overspend or invest without enough care.

In other palaces, Thiên Tài in Phụ Mẫu gives intelligent and capable parents. In Phúc Đức, it is a reminder to tend graves, the ancestral altar, and the family line's talented members. In Điền Trạch, it is a reminder to pay attention to the feng shui of the home and to keep limited dealings with neighbours because of a proud nature. In Quan Lộc, academic ability stands out but one easily attracts envy. In Nô Bộc, friends are talented and share the same aims. In Thiên Di, one easily meets gossip and conflict because of a high ego. In Tật Ách, one is prone to nervous exhaustion and declining health, and if talented, may suit the medical profession in order to help others.

Should Thiên Thọ Be Read as a Promise of Long Life?

It should not. Thiên Thọ should be read as a soft signal, not a verdict or a promise. One way of interpreting holds that Thiên Thọ belongs to the group of longevity stars along with Long Đức, Phúc Đức, Thiên Đức, and that these stars support the lengthening of life "especially when a person practises good deeds and repays kindness and gratitude". That phrase "especially when" is a condition, not an automatic consequence.

Another way of interpreting shows that even the concept of longevity is graded: it cites Wang Chong in Lunheng, dividing long life into upper longevity of 90, middle longevity of 80, and lower longevity of 70, and mentions the notion of "not exhausting one's blessings", which makes even birthday wishes subject to taboos. The same book mentions the pair Thiên Đồng of the Water element and Thiên Lương of the Earth element as symbols of blessing and longevity, and states clearly that a person with those two stars shining on the Mệnh or on a period is usually regarded as blessed, living at ease and seldom ill, without ever asserting a specific number of years.

On the health side, another way of interpreting also mentions Hóa Khoa with the verse "Hóa Khoa dissolves calamity, when danger comes it turns to safety", and the resolving stars such as Thiên Giải, Địa Giải, Giải Thần, Thiên Quan, Thiên Phúc. That is, in practice, people do not read longevity from a single star, but from a whole network of resolving stars and longevity stars woven together.

How Should the Pair Thiên Thọ and Thiên Tài Be Read Correctly?

The reasonable way to read them is to place the two stars in three layers. The first layer is the palace position: where they sit, and whether they coincide with a strong or weak principal star. The second layer is the companion stars: meeting auspicious stars makes the good meaning clearer, while meeting malefic stars or Hóa Kỵ bends the meaning in another direction. The third layer is the whole picture: where Mệnh, Thân, Phúc Đức and the current period are heading.

One point very easily overlooked is Thiên Tài's quality of supporting the declining and not the flourishing. When a chart is strong, Thiên Tài can reduce the value of the good stars; when a chart is weak, it lends a hand. Therefore, with the same Thiên Tài in Mệnh, a person with a principal star in a bright and flourishing state and a person with a principal star in a fallen position will produce two different results. For the same reason, one should not say in absolute terms that Thiên Tài is a good star or a bad star.

With Thiên Thọ, two extremes should be avoided. One is turning it into a promise of long life, which easily makes the reader complacent about their health. The other is dismissing it entirely. The middle position is to treat it as an indication about one's way of living and way of behaving, in the very spirit that Master Thiên Lương wrapped up in the two words kindness.

Which Palace Do Thiên Tài and Thiên Thọ Fall Into According to the Year Branch of Birth?

Thiên Tài is counted from the Mệnh palace, so it always falls into the same functional palace for everyone with the same year branch; Thiên Thọ is counted from the Thân palace, and since the Thân palace changes with the month and hour of birth, the table can only record the number of steps counted from the Thân palace. Calculated by the exact placement method of the Tử Vi chart plotting tool.