How to Read Two Major Stars Sharing a Palace in Tử Vi, and Why Are There Exactly 24 Combinations?

Why do 14 major stars form only 24 same-palace combinations?

The 14 major stars are not placed freely across the 12 palaces. They are bound into six fixed groups, each headed by one star of the Tử Vi family, and the position of the whole group shifts only with the position of the Tử Vi palace. This constraint is what locks the number of two-major-star same-palace combinations at 24, no more.

The six groups are:

• Tu Vi-led group: Tử Vi, Thiên Cơ, Thái Dương, Vũ Khúc, Thiên Đồng, Liêm Trinh.
• Thien Phu-led group: Thiên Phủ, Thái Âm, Tham Lang, Cự Môn, Thiên Tướng, Thiên Lương, Thất Sát, Phá Quân.

The book Đẩu Số Tinh Thanh (volume 1) ranks Tử Vi and Thiên Phủ as the two strongest stars, followed by Thái Dương, Thái Âm, Vũ Khúc, Thiên Đồng, Thiên Tướng, Thiên Lương, Thiên Cơ, while Liêm Trinh, Tham Lang, Cự Môn, Thất Sát, Phá Quân form the group carrying an inauspicious flavor, decent when mieu or vuong, heavy when ham. This grouping matches the same-palace structure: the group traveling with Tử Vi mostly belongs to auspicious stars, while the group traveling with Phu contains Sát Phá Tham.

Because each pair appears only in certain earthly branches, learners need to memorize both the pair and the palace, not the stars in isolation. Below is a table of the 24 combinations, the branch pair where they share a palace, and the relative mieu/ham level of each star.

The levels in this table follow a common convention; some books differ in a few palaces, so use it for orientation only, not as a substitute for each school's own mieu/ham table.

Why exactly 24 pairs and not more?

Because each major star has only one fixed position relative to the Tử Vi palace, and two stars meet only when those positions fall in the same palace. If drawn out, each star in the Tử Vi group is offset by one palace from the next, and each star in the Phu group likewise, so they intersect exactly once at one branch pair. The 14 stars, combined by that rule, yield 24 same-palace pairs, no more and no less.

This has a practical consequence: when you see a chart with Tử Vi in Dan, you know for certain Thiên Phủ is also in Dan, and the Than palace will face that pair. No need to look up each star. For the same reason, pairs such as Tử Vi with Thái Âm or Vũ Khúc with Cự Môn do not exist in the system, even though beginners often mistake them.

How do the six Tử Vi and Phu groups differ?

The group traveling with Tử Vi leans toward a "ruling" mode: Tử Vi, Thiên Cơ, Thái Dương, Vũ Khúc, Thiên Đồng, Liêm Trinh. The group traveling with Thiên Phủ leans toward "storehouse and transformation": Thiên Phủ, Thái Âm, Tham Lang, Cự Môn, Thiên Tướng, Thiên Lương, Thất Sát, Phá Quân. The difference is not in fortune or misfortune but in how they operate.

According to Đẩu Số Tinh Thanh, when Khoa Quyền Lộc, Xương Khúc, Tả Hữu, Khôi Việt join in, the benign group of Tử Vi, Thiên Phủ, Thái Dương, Thái Âm, Vũ Khúc, Thiên Đồng, Thiên Tướng, Thiên Lương, Thiên Cơ clearly gains power; conversely, the group of Liêm Trinh, Tham Lang, Cự Môn, Thất Sát, Phá Quân, when properly combined, can still form a pattern of great wealth and honor. In other words, any group can be good; the question is where the pair sits and what it meets.

Reading each pair: do the two stars complement or pull each other?

Tử Phủ sharing a palace in Dan and Than

This is the pair most cited in old books. One reading holds that Tử Phủ sharing a palace in Dan or Than forms a good configuration, corresponding to the three talents and blessings. Another holds that this pattern brings long life and few storms, but requires Tả Phù, Hữu Bật, Thiên Khôi, Thiên Việt to fully manifest; without them, the native tends to be conservative, content, and lacking breakthrough.

These two stars complement each other: Tử Vi gives authority, Thiên Phủ gives storehouse and management. But they also pull each other because both favor stability, so this pair tends to produce someone who preserves an estate rather than someone who opens a path.

Tử Vi with Tham Lang, Thất Sát, Phá Quân

Tử Tham in Mao and Dau, Tử Sát in Ti and Hoi, Tử Phá in Suu and Mui. The book Tử Vi Kinh Nghiem, lower volume, records that when Vũ Phá sits in Ti or Hoi with Hóa Kỵ added, the native is often a person of many schemes and plans, suited to detective work; conversely, Tham Vũ traveling together in Suu or Mui is truly good only with Quyen and Loc accompanying, and often follows a path of poverty first, wealth later. Tử Vi here plays the role of restraining the destructive tendency but cannot erase it. This is the "active" group, with outcomes depending on the major period and the supporting stars that join.

Liêm Trinh and the Sát Phá Tham group

Vương Đình Chi Dam Đẩu Số points out that the relationship between Liêm Trinh and Sát Phá Tham splits into two: same palace and opposition. In Suu or Mui, Liêm Trinh always shares a palace with Thất Sát; in Mao or Dau, it always shares a palace with Phá Quân; in Ti or Hoi, it always shares a palace with Tham Lang; and in Dan or Than, Liêm Trinh opposes Tham Lang. Liêm Trinh inherently carries a romantic flavor, and meeting stars of transformation easily produces upheaval, so the major period and the tam phuong must be examined before judging good or bad.

Tử Vi Kinh Nghiem, lower volume, records that Liêm Sát in Suu or Mui is most ham, and with evil and killing stars it is very bad, prone to harboring resentment, reduced if Hóa Khoa is present. But this is where Vietnamese and Chinese books do not entirely agree: for the same Liêm Sát pair, one edition reads it as a prison fate, another treats it only as a toilsome pattern, and only with supporting stars can a conclusion be drawn.

Cơ Lương, Đồng Âm, Cự Nhật: the "Cơ Nguyệt Đồng Lương" group

Đẩu Số Tinh Thanh records a verse that Cơ Nguyệt Đồng Lương governs blessings and longevity, while Nhật Nguyệt Tả Hữu governs wealth and honor. This group includes Thiên Cơ, Thái Âm, Thiên Đồng, Thiên Lương, and the corresponding same-palace pairs are Cơ Âm in Dan and Than, Cơ Lương in Thin and Tuat, Đồng Âm in Ty and Ngo, Đồng Lương in Dan and Than, Cự Nhật in Dan and Than, Dương Lương in Mao and Dau.

Vương Đình Chi Dam Đẩu Số states clearly: when Thiên Lương and Thái Dương form a star system, this is the best structure, because Thiên Lương is inherently solitary and harsh, and Thái Dương dissolves it; therefore Thái Dương should be mieu or vuong, as in Ngo or Mao, better than Dau or Ty. Thiên Lương in Ty receiving Thái Dương from Ngo is better than Thiên Lương in Ngo receiving Thái Dương from Ty. The same pair, reversed in palace, changes in quality.

Some Tử Vi texts record that when Thiên Lương rules alone in Ti or Hoi, with Thiên Đồng opposite, this is a ham position; a person with this pattern who does not meet auspicious stars will struggle to achieve greatly, and mostly will not prosper much. Yet if born in the years At, Binh, Mau, Nham, even with many auspicious stars, they can still attain wealth and honor, only the career must pass through hardship, and early growth may be great while the whole life is toilsome.

Đồng Âm and the yin-yang flavor

Tử Vi Kinh Nghiem, lower volume, records that Thái Dương meeting Hóa Kỵ is still in position, called Khanh van phung Nhat; Thái Âm meeting Hóa Kỵ is also in position, called Khanh van phung Nguyet. But Âm Dương when ham is called phan boi, very bad for men, who must leave home and wander. The book also records a verse that many who fail to attain fame do so only because Nhật Nguyệt contend in Suu and Mui; yet if they meet Tả Hữu, Xương Khúc, their reputation still rises. This is a clear example that a star pair does not by itself decide fortune or misfortune.

How do the schools read differently?

Vương Đình Chi's Trung Châu school does not read by isolated star pairs but by the twelve-board "star system": each palace is a combination of stars, and the meaning lies in the whole system, not in the same-palace pair. Vương Đình Chi Dam Đẩu Số discusses Thái Dương by three general properties, comparing day and night palaces objectively, rather than assigning a fixed verse to each pair.

Vietnamese books such as Tử Vi Kinh Nghiem, lower volume, follow the verse-divination approach, assigning ready-made verses to each combination. This is easy to remember but easily altered by miscellaneous texts, turning a conditional verse into an absolute verdict. For example, "Liêm Tham Tị Hợi" is read as a prison fate, while the original only says this pair easily produces upheaval and must be checked against the major period.

The books also disagree on how much heavier same-palace is than opposition. Some treat same-palace as strongest, opposition about seven parts, trine about five parts; others treat opposition as nearly equal in force to same-palace. Learners should follow one convention and state clearly which convention they follow.

What must be examined to read a star pair correctly?

A star pair is only a tendency. To read it correctly, place it within tam phuong tu chinh: the Menh palace, the opposite palace, the two trine palaces, and the Than palace. Supporting stars decide most of it: the same Tử Phủ in Dan differs greatly with Tả Hữu Khôi Việt versus only Kình Đà.

Đẩu Số Tinh Thanh notes that strong stars combined into a high configuration are good at a high level, and the reverse is low; the power of a configuration does not lie in one star. Some Tử Vi texts also caution that when interpreting Tử Phủ sharing a palace, one must consider age, yin-yang forward or reverse, the relation between Menh and Cuc and the Menh palace; if those four factors are good, even a ham star is not worrisome, and if bad, even a good star is reduced.

Finally, do not read a star pair as a predetermined fate. The same pair, for two people born in different hours and months, gives two different charts in supporting stars and period cycles. Tử Vi is a system describing tendencies, not a verdict.