What is Three Squares and Four Corners?
Three Squares and Four Corners (sān fāng sì zhèng) is the basic structural perspective for interpreting a Zi Wei Dou Shu chart — the “three directions” refer to a given original palace plus its two “trine palaces” (arranged according to the Earthly Branch trine relationships); the “four corners” refer to the original palace plus its opposite palace (the Earthly Branch that clashes with it directly opposite). Together, the term Three Squares and Four Corners denotes the three associated palaces that must be examined alongside the original palace — two trine palaces and one opposite palace — plus the original palace itself, making four palaces in total.
The logic of Three Squares and Four Corners derives from a fundamental principle of Zi Wei Dou Shu interpretation: the fortune or misfortune of a single palace is determined not only by its own stars but also by the combined radiance of stars in its trine palaces and opposite palace. Reading the original palace alone yields only a partial picture; placing the original palace within the overall framework of its Three Squares and Four Corners produces a complete interpretive unit. This is one of the most significant differences between Zi Wei Dou Shu and methods that analyze a single palace in isolation.
How to find your Three Squares and Four Corners
Using the Life Palace as an example:
- Identify the original palace: Determine which palace is being interpreted (here, the Life Palace).
- Identify the trine palaces: Find the two trine positions based on the Earthly Branch of the original palace — for example, if the Life Palace is at Yin, its trine positions are Wu and Xu (the Yin-Wu-Xu trine of the Fire phase). The Wu position is the Career Palace (four positions forward from the Life Palace), and the Xu position is the Wealth Palace (four positions backward from the Life Palace).
- Identify the opposite palace: The palace six positions directly across from the original palace is its opposite palace. The opposite palace of the Life Palace is always the Travel Palace.
- Read the four palaces together: Examine the main stars, auxiliary stars, baleful stars, and transformational stars across the original palace, the two trine palaces, and the opposite palace.
- Assess the nature of the combined radiance: The four palaces together form the “energy field” of the original palace — many auspicious stars indicate an auspicious conjunction, many baleful stars indicate a harmful conjunction, and a mix requires detailed analysis.
In unMing’s Zi Wei tool, selecting a palace automatically highlights the four palaces of its Three Squares and Four Corners, making it easy to read them simultaneously.
Types and key features of Three Squares and Four Corners
Classified by palace and geometric position.
By palace combination — four main Three Squares and Four Corners groups
The twelve palaces can be grouped into several main combinations based on their Three Squares and Four Corners: Life, Wealth, Career, and Travel (self, wealth, career, and movement) — this is the most central group, describing the native’s career and personal momentum; Spouse, Children, Friends, and Fortune (equivalent to — taking the Spouse Palace as the original, its 三方四正); Parents, Siblings, Health, and Property, and so on. Every palace has its own independent Three Squares and Four Corners.
By auspicious or harmful conjunction
Different star combinations within the Three Squares and Four Corners produce different types of conjunctions: Auspicious conjunction — many auspicious stars, with Transformation Stars for Prosperity, Authority, and Excellence seated in the Three Squares and Four Corners — the original palace is strengthened; Harmful conjunction — many baleful stars, with the Transformation Star for Obstruction clashing — the original palace is under pressure; Mixed auspicious and harmful — both auspicious and baleful stars — the original palace has both gains and losses, which is the most common situation in most actual charts.
By main star conjunction relationships
Conjunctions between main stars form specific combinations — “Zi Wei and Tian Fu meeting together” (Zi Wei and Tian Fu mutually present within the 三方四正) indicates a grand structure; “Ji, Yue, Tong, Liang” (Tian Ji, Tai Yin, Tian Tong, and Tian Liang mutually conjoining) indicates literary talent and stability; “Sha, Po, Lang” (Qi Sha, Po Jun, and Tan Lang mutually present within the 三方四正) indicates intense upheaval and dramatic swings. These main star combinations are among the traditional structural configurations of Zi Wei Dou Shu.
How Three Squares and Four Corners shapes the native
The structure of Three Squares and Four Corners almost entirely determines the level of detail in interpreting each palace.
For the Life Palace interpretation
The Three Squares and Four Corners of the Life Palace is “Life, Wealth, Career, Travel” — the native is assessed not only by the Life Palace but also by the support or clash from the Wealth, Career, and Travel palaces. If the Wealth and Career palaces are auspicious, the native naturally receives more assistance; if the Travel Palace is auspicious, the native has more opportunities abroad and external support.
For the Spouse Palace interpretation
The Three Squares and Four Corners of the Spouse Palace is “Spouse, the palace corresponding to Travel, Fortune, and Career” — the specific corresponding positions depend on the Earthly Branch of the Spouse Palace. This combination describes the external environment of the native’s marriage and emotions — marriage is not just a matter of two people but is jointly influenced by social circles, work status, and spiritual life.
For the Wealth Palace interpretation
The Three Squares and Four Corners of the Wealth Palace is “Wealth, Life Palace, Career, and Fortune” — wealth is not just about earning money but also involves the native’s own drive (Life Palace), career platform (Career Palace), and tendency toward enjoyment (Fortune Palace). Reading the Wealth Palace alone only shows “whether one can earn”; reading it within its Three Squares and Four Corners reveals “how one earns, keeps, and spends.”
For luck period interpretation
The fortune or misfortune of any palace during a given Major Life Cycle or Annual Flow must be assessed by looking at the overall conjunction of that palace and its Three Squares and Four Corners at that time — when the Annual Flow’s Transformation Star for Obstruction clashes into the Three Squares and Four Corners of the original palace, the original palace is under pressure that year; when the Major Life Cycle activates auxiliary stars in the Three Squares and Four Corners of the original palace, the original palace receives support during that period.
Classical sources: Three Squares and Four Corners in the canon
In judging a fate, one must examine the three directions and four corners; a reading based on a single palace cannot form a complete structure.
论命必看三方四正，单宫之论不成其体。
— General rule of Zi Wei Dou Shu interpretation (see Zi Wei Dou Shu Quan Shu)
This statement articulates the fundamental position of Zi Wei Dou Shu — the chart is a whole, and the interpretation of any one palace cannot be separated from the radiance of other palaces. “A reading based on a single palace cannot form a complete structure” emphasizes structural thinking — from the start, one must abandon the simplified method of “one palace, one answer.”
Once the three directions are united, fortune and misfortune are immediately determined.
三方一合，吉凶立判。
— Key formula of Zi Wei interpretation
This formula means that once the Three Squares and Four Corners of the original palace have been examined together (“the three directions are united”), the basic judgment of fortune or misfortune is already established. It is a condensation of Zi Wei Dou Shu’s structural thinking — interpretation does not proceed palace by palace in isolation but takes the Three Squares and Four Corners as the fundamental unit of reading.
Common misconceptions about Three Squares and Four Corners
A common error: Reading only the original palace and ignoring the Three Squares and Four Corners. In fact: Reading only the main stars of the original palace yields about 30 percent of the information; adding the combined radiance of the Three Squares and Four Corners produces the complete picture. This is especially true when the original palace is an “empty palace” (without a main star) — in that case, one must rely on borrowing stars from the opposite palace and on the Three Squares and Four Corners for support — ignoring the Three Squares and Four Corners means reading nothing at all.
A common error: Treating the Three Squares and Four Corners as absolutely decisive — “if the three directions are auspicious, the fate is auspicious.” In fact: The combined radiance of the Three Squares and Four Corners is only one layer of analysis for the original palace — a complete reading of the chart must also consider the Major Life Cycles, Annual Flows, and the overall structural configuration. The Three Squares and Four Corners merely clarifies the static configuration of a single palace; the dynamic effects of time must be analyzed through the Four Transformations and the movement of luck periods.
A common error: Directly equating Zi Wei’s Three Squares and Four Corners with the Earthly Branch trine combinations of Ba Zi. In fact: The two share the same geometric structure (both based on Earthly Branch trine relationships), but their applied meanings differ. Zi Wei uses Three Squares and Four Corners to examine the combined radiance of stars and analyze the overall energy field of a palace; Ba Zi uses trine combinations to examine the merging of Earthly Branches and analyze the condensation and direction of the Five Elements in the life configuration. Same geometry, two sets of interpretive rules.
Related terms
Twelve Palaces
Fourteen Main Stars
Trine Combination
Frequently asked questions
Which palaces are included in Three Squares and Four Corners?
Using the Life Palace as an example: the three directions of the Life Palace are the Wealth Palace (four positions backward from the Life Palace) and the Career Palace (four positions forward from the Life Palace); the four corners refer to the Life Palace plus its opposite palace (the Travel Palace, six positions directly across from the Life Palace). Together, these are called Three Squares and Four Corners — the four palaces of Life, Wealth, Career, and Travel. Every palace has its own Three Squares and Four Corners.
Why must one palace be read by looking at its Three Squares and Four Corners?
The interpretive principle of Zi Wei Dou Shu is that “one palace is influenced by three palaces” — the fortune or misfortune of the original palace is determined not only by its own main stars but also by the stars in its trine palaces and opposite palace. Reading only the main stars of the original palace is “reading a partial map”; reading the Three Squares and Four Corners is “reading the complete unit.”
How should one judge when the Three Squares and Four Corners contains both auspicious and harmful stars?
If the Three Squares and Four Corners contains many auspicious stars and few baleful stars — the original palace receives support from multiple directions and can be considered an “auspicious conjunction.” If baleful stars and the Transformation Star for Obstruction all clash — even if the original palace itself has auspicious stars, it will be suppressed, called a “harmful conjunction.” Situations in between — with both auspicious and baleful stars — are the norm. In such cases, one must examine the specific combinations and strengths of the stars.
Is the combined radiance of Three Squares and Four Corners related to the Earthly Branch trine combinations?
They are related at the root. The three directions of Zi Wei Dou Shu are arranged according to the Earthly Branch trine relationships (Shen-Zi-Chen, Hai-Mao-Wei, Yin-Wu-Xu, Si-You-Chou) — the three directions are the trine palaces. However, Zi Wei’s Three Squares and Four Corners is used to interpret the combined radiance of stars, while Earthly Branch trine combinations are used in Ba Zi for the merging of Earthly Branches — both borrow the same geometric structure but have their own interpretive rules.
Is the influence of the opposite palace always negative?
Not necessarily. The opposite palace is one of the “four corners” — it can both clash with the original palace and support it. If auspicious stars are seated in the opposite palace, it serves as “external support” for the original palace (external resources, partners); if baleful stars are seated there, it serves as “external clash” (external resistance). The nature of the opposite palace’s fortune or misfortune determines the direction of its effect — not every “clash” is destructive.
See your Three Squares and Four Corners in unMing
unMing’s Zi Wei Dou Shu tool automatically highlights the four palaces of a palace’s Three Squares and Four Corners when you select it. A worthwhile starting point: examine the overall main star configuration of your Life Palace’s Three Squares and Four Corners (Life, Wealth, Career, Travel) — these four palaces form the main axis of your life’s momentum. Then look at the Three Squares and Four Corners of whichever palace concerns you most (such as the Spouse Palace) — that combination describes the complete energy field of that area.