Chinese Numerology: Numbers, Lo Shu, and the Kua Number

Introduction

Chinese numerology is not a single school but two distinct layers that are constantly conflated in popular accounts. The first layer is the classical "study of symbols and numbers" (xiang shu): a philosophical system of ancient China connected to the I Ching, the trigrams of the bagua, and the five phases of wuxing. The second is folk homophonic symbolism: a number is considered "lucky" or "unlucky" depending on which word it sounds like (8 sounds like "prosper," 4 sounds like "death"). Standing apart are feng shui practices involving the Kua number and the Lo Shu Square, as well as the modern commercial method known as su cai, which has no connection to the classical tradition.

It is important to distinguish Chinese tradition from Western schools right away: there is no "life path number" in the Pythagorean sense — a birth date is not reduced to a single "destiny" number (see the section "Differences from Western Schools" for details). Chinese numerology should also not be confused with the Chinese zodiac based on twelve animals: that is astrology, not numerology.

What Is Chinese Numerology?

"The Study of Symbols and Numbers" (Xiang Shu)

In ancient China, numerology (象数之学, "the study of symbols and numbers") was not fortune-telling in the modern sense but a universal theoretical system applied in philosophy, astronomy, divination practices, and music theory. According to the Russian-language Wikipedia, it operates with four groups of objects:

• Symbols — trigrams, hexagrams, yin-yang, the five phases of wuxing, and taiji;
• Heavenly stems — ten signs;
• Earthly branches — twelve signs (corresponding to years and hours);
• Decimal group characters — numbers from 1 to 10.

The earthly branches and heavenly stems, combined with each other, form 60 pairs of cyclical signs — a system that still underlies the traditional Chinese calendar. The key classification principle is yin-yang: odd numbers were considered masculine (yang) and even numbers feminine (yin). The foundations of this doctrine are laid out in the ancient texts Zuo Zhuan, Guo Yu, Hong Fan, and Xi Ci Zhuan; in Russian-language scholarship, it has been systematically studied by sinologist A. I. Kobzev.

Folk Homophonic Tradition

Parallel to the philosophical system exists a folk layer: in the Chinese language, numbers sound like other words, and this pronunciation determines whether a number is considered lucky. The principle is expressed by the pair of concepts 吉利 jílì — "auspicious" and 不吉 bùjí — "inauspicious." Six and eight are widely considered lucky, while four is unlucky. It is important to understand that homophony works differently in different dialects, so the same digit may "sound" fortunate in one region and unfortunate in another — this is discussed in more detail in the section on the number 4.

Lucky and Unlucky Numbers in Chinese Tradition: Meanings of 0–9

The table below is compiled from the folk homophonic tradition (source: English Wikipedia). The meanings are based on pronunciation in Mandarin or Cantonese; where the dialect matters, it is noted.

Details on key numbers:

• 2 — in Cantonese, the number two is a homophone for "easy" (易) and "bright" (亮). This gives rise to combinations: 24 (Cantonese yih sei) — "easy to die" (bad), while 28 (Cantonese yih baat) — "easy to prosper" (good).
• 3 sounds like "life" (生, shēng) — a plus, but simultaneously like "parting" (散, sàn) — a minus; the assessment depends on context.
• 5 — "I" (吾, wú) in Mandarin and "not" (唔, m̀) in Cantonese: 53 can be read as "my life" or "not born," 58 as "I will prosper" or "no prosperity."
• 7 — "together" (齊, qí) — good for relationships; "rise" (起), "vital energy" (氣). But the seventh month of the lunar calendar is the "Ghost Month"; seven also resembles "deceive" (欺); in Cantonese it has a vulgar reading.
• 8 — sounds like 發 fā ("prosper"); visually, 88 resembles the character 囍 ("double happiness"). Examples: the 2008 Beijing Olympics opening ceremony began on 08.08.08 at 8:08:08 PM; Sichuan Airlines purchased the phone number +86 28 8888 8888 for 2.33 million yuan in 2003; a building at 39 Conduit Road in Hong Kong skips 43 intermediate floors. More on this in the number 8 card.
• 9 — historically associated with the emperor (the dragon and its nine sons, nine honors, nine forms of execution); sounds like "longevity" (久, jiǔ) — often used at weddings. In Cantonese, nine, like seven, has a vulgar reading.

Number Combinations

Homophony also works at the level of combinations — popular combinations from English Wikipedia:

The Number 4 and Tetraphobia

Four is the primary "unlucky" number of China, and around it has developed an entire layer of cultural practices known as tetraphobia — the irrational fear of the number 4, widespread in East Asian countries (China, Japan, Korea). The reason is linguistic: the character for "four" (四) is pronounced almost identically to "death" (死), with the words differing only in tone. In Korean and Japanese, this association was inherited from Chinese with modifications.

In practice, tetraphobia manifests as follows (based on the "Tetraphobia" article in Russian Wikipedia):

• hospitals and institutions almost always omit floors ending in 4 (sometimes 13 is also skipped as a "nod to the West");
• phone numbers containing 4 are sold at lower prices;
• Nokia did not use the digit 4 in model numbers intended for Asian markets.

However, the interpretation of four is not unambiguous, and this is fundamental. In the Teochew dialect and in historical tradition, 4 is a lucky number: even numbers were generally considered auspicious; fours appear in culture in groups (four mandarins, red envelopes of $4/40/44); in Singapore there is a house whose owners chose the number 44. In Cantonese, 54 reads as "will not die, will live forever" — essentially a wish for longevity. And in the Chinese musical scale, the note corresponding to four — "fa" — is phonetically close to 發 ("wealth"). Both traditions — "4 = death" and "4 = luck" — are real and regionally conditioned; a detailed analysis is in the number 4 card and the "Controversies" section.

Lo Shu Square

Lo Shu (洛書, Luòshū; "Writings of the Luo River," also "Diagram of the Nine Halls" 九宮圖) is an ancient Chinese diagram named after the Luo River near Luoyang (Henan Province). It is the only normal magic square of order three — a 3×3 grid with numbers from 1 to 9. Lo Shu traditionally forms a pair with the "River Map" (He Tu), associated with the Yellow River. The diagram was used in Chinese geomancy (feng shui), numerology, and philosophy, and served as the basis for planning cities, tombs, and temples.

According to legend, during a great flood a magical turtle emerged from the Luo River with a pattern of dots 1–9 arranged in a 3×3 grid on its shell; the legend links the appearance of the square to the Emperor Yu the Great. Dating in encyclopedic sources varies: according to Russian Wikipedia, the earliest depiction on a turtle shell dates to approximately 2200 BCE; according to English Wikipedia, early records from 650 BCE are ambiguous, the magic square is clearly mentioned by 80 CE, and an undisputed example dates to 570 CE.

Properties of the square:

• the sum of numbers along any row, column, or diagonal equals 15;
• the sum of all numbers is 45;
• since 5 is in the center, the sums of opposite cells equal 10;
• even numbers are placed at the four corners, odd numbers form a cross.

In Chinese cartography, north is traditionally shown at the bottom, so in the square 1 is at the bottom (north, trigram ☵ Kan, water) and 9 is at the top (south, trigram ☲ Li, fire); this arrangement corresponds to the "Later Heaven" bagua and is associated with feng shui. In the Western tradition, Lo Shu is called the "Seal of Saturn" (Sigillum Saturni).

Lo Shu and the Pythagorean Square: Do Not Confuse

The Lo Shu Square is often confused with the numerological "Pythagorean Square," but they are different things. In Lo Shu, what matters are the sums along the lines — it is a magic square. In the "Pythagorean Square" (psychomatrix), no sums are calculated: a 3×3 table records how many times each digit appears in the birth date, and each cell is read as a personal trait. More on the psychomatrix in the article on the Pythagorean Square, where Lo Shu is described as the "Seal of Saturn."

"Lo Shu by Birth Date" and Flying Stars

In modern popular practice, the Lo Shu Square is used differently than in the classical tradition. First, a "personal Lo Shu chart by birth date" is constructed — a method analogous to the psychomatrix but not described in encyclopedic sources (a popular feng shui adaptation, see "Controversies"). Second, the Lo Shu Square underlies "flying star" predictions — annual feng shui forecasts in which the positions of "star" numbers change from year to year; this explains the winter spike in searches for "lo shu 2026" and "lo shu square for 2027" (forecasts are published November–January). Both applications are modern feng shui practices, not the ancient static diagram.

The Kua Number

The Kua number (in feng shui literature also Ming Gua, 命卦) is a personal number used in the Eight Mansions Compass School of feng shui to determine favorable and unfavorable directions — a "personal compass": which way to orient your bed, where to place your desk, and so on. In encyclopedic sources, the term is recorded only in English Wikipedia, in the article on the Nine Star Ki system; there are no separate Wikipedia articles on "Kua number," "Ming Gua," or "Eight Mansions" (verified absences noted at the end of the article).

How to Calculate the Kua Number

Calculation formulas are not documented in encyclopedic sources — this is a popular feng shui practice, and different schools offer different variants. Below is one of the common variants, with an explicit note: one of several variants; schools differ.

1. The birth year is taken according to the Chinese solar calendar: the year begins in early February (midway between the winter solstice and the spring equinox), not on January 1 and not with the lunar New Year. Those born in January–early February need to check the year against the solar calendar.
2. The digits of the birth year are added together, and the result is reduced to a single digit from 1 to 9 (X).
3. For men: X is subtracted from 11 (in some schools, from 10). For women: 4 is added to X (in some schools, 5).
4. The resulting number is the Kua. A special case is the number 5: for men it is replaced by 2, for women by 8 (5 has no direction of its own; it is "substituted" by the destined Kua).

Example (using the selected variant): a man born in 1990: 1+9+9+0 = 19 → 1+9 = 10 → 1+0 = 1; 11 − 1 = 10 → 1+0 = 1. Kua = 1. A woman born in the same year: 4 + 1 = 5 → replaced by 8. Kua = 8.

To reiterate: this is one variant of a popular practice. Discrepancies between schools (10 or 11, 4 or 5, treatment of zero in the year) are listed in the "Controversies" section. The calculator on the site uses this exact variant — with a note.

Eastern and Western Groups

According to popular feng shui practice, Kua numbers are divided into two groups:

• Eastern group: 1, 3, 4, 9 — traditionally considered harmonious with eastern directions (east, southeast, south, north);
• Western group: 2, 6, 7, 8 — harmonious with western directions (west, northwest, southwest, northeast).

The Kua number is also used to assess compatibility between people (it is traditionally believed that partners from the same group are more compatible). All of this is popular feng shui practice without encyclopedic documentation: the direction table and compatibility rules are not described in open sources.

Nine Star Ki

The related Japanese system Nine Star Ki (九星気学) was created in 1924 by Shinjiro Sonoda (1876–1961) based on Chinese methods: feng shui "flying stars," Ming Gua from the Eight Mansions school, Lo Shu, and the Later Heaven bagua. In this system, the "star" numbers are assigned elements according to the Later Heaven arrangement:

The stars are determined by the year (honmei) and month (getsumei) of birth according to the Chinese solar calendar.

Wuxing: The Five Phases and Numbers

The doctrine of the five phases (wuxing) — wood, fire, earth, metal, water — forms the foundation of Chinese numerical symbolism: the phases are linked both to trigrams and to numbers (as in the Nine Star Ki table above). In everyday practice, it is traditionally believed that numbers "corresponding" to a person's phase bring luck, so they are chosen for phone numbers, license plates, and apartment numbers ("feng shui meaning of numbers"). This everyday micro-layer has no encyclopedic documentation, so the interpretations are presented only as popular practice.

Su Cai: Modern "Digital Analysis"

The term "su cai" in search queries is closely associated with numerology ("su cai numerology" — about 490 impressions per month), but this method has no relation to classical Chinese numerology. Su cai is a modern commercial "digital analysis" method based on birth date, marketed as "Chinese" and promising to reveal money, talents, and destiny through numbers. The original source of the method is paid courses and marketing materials, not ancient texts; there are no open descriptions of its origins. More in the "Controversies" section. The site does not present su cai as a classical school: it is a separate modern branded method.

Differences Between Chinese Numerology and Western Schools

• No "life path number." Pythagorean and Vedic schools reduce the birth date to a single digit carrying character and destiny. Chinese tradition does not work this way: what matters is homophony and context (phone number, floor, year), not date reduction. A comparison with the Pythagorean method is in the article on Pythagorean numerology.
• The number hierarchy is different. In Chinese tradition, 8 and 9 are "maximally good" numbers; in Western schools, the hierarchies of 1–9 are built differently, and 8 and 9 do not carry the status of "prosperity" and "longevity."
• There are no master numbers. 11 and 22 are a feature of Western schools (master numbers that are not reduced). In Chinese tradition, "11" is simply a twin number: four ones in 11.11 gave rise to "Singles' Day," not a "dominant number."
• Kua number ≠ life path number. The Kua is not "destiny" but a feng shui tool: a personal compass of directions based on birth year and sex.
• Lo Shu Square ≠ Pythagorean Square. The difference between sums along lines and digit frequencies was explained above.
• The Chinese zodiac (12 animals) is astrology, not numerology: it has no direct connection to numbers and is a related but distinct topic.

A general overview of numerology as a practice is in the article "Numerology".

Critique and Scientific Status

From a scientific perspective, numbers do not influence human life. Critics (notably the Skeptical Dictionary) call numerology superstition and pseudoscience: the outward mathematical appearance of calculations does not make them scientific. Two tests of numerological principles have been conducted — in the United Kingdom (1993) and in Israel (2012, involving a professional numerologist and 200 participants, repeated twice) — both yielded negative results: predictions did not differ from random guessing.

The specificity of the Chinese tradition is that its "meanings" for numbers are primarily linguistic coincidences: the homophony of the Chinese language (few syllables — many homophones) makes the "luckiness" of numbers an inevitable consequence of pronunciation, not an inherent property of the numbers themselves. Xiang shu as a philosophical system is a historical fact of Chinese thought; its modern numerological applications are superstitious practice.

Controversies

Number 4: "Death" or "Luck"?

Both interpretations are real: in Cantonese and modern urban China, 4 is unlucky (tetraphobia, skipped floors, cheap phone numbers), while in Teochew, in historical tradition, and in music (the note "fa" ≈ 發 "wealth") 4 is lucky. The discrepancy is regional and dialectal; it has been deliberately left unsmoothed here.

Kua Number: Formulas Are Not Documented

Wikipedia knows only the term Ming Gua (in the article on Nine Star Ki). The specific formulas (11−X for men, 4+X for women, replacement of 5 by 2/8), the direction table, and the compatibility rules are popular practice with variant readings between schools. The year boundary is the Chinese solar New Year (early February), not January 1 and not the lunar New Year. The site's calculator uses the selected variant with a note about school discrepancies.

"Lo Shu by Birth Date" — A Popular Adaptation

In the classical tradition, Lo Shu is a static cosmological diagram. The method of constructing a "personal Lo Shu chart" from the birth date and its interpretation (including "Lo Shu arrows") is not described in encyclopedic sources — it is a popular feng shui adaptation, analogous to Alexandrov's "Pythagorean Square."

Su Cai — A Brand, Not a School

The origin of the term and method of "su cai" is described only in commercial materials (paid courses); there are no open sources. Positioning su cai as "classical Chinese numerology" is incorrect.

Number 13 and the Chinese Zodiac

13 in China does not carry sustained negativity (unlike in the West): floors with 13 are mainly skipped as "a nod to the West" — this is not triskaidekaphobia. The Chinese zodiac based on twelve animals (about 13,000 impressions) is astrology, not numerology, and is not included in the core of this topic.

Calculators

The site is preparing calculators based on Chinese tradition:

1. Kua Number — calculation by birth date and sex with favorable directions (selected variant, with a note about school discrepancies).
2. Lo Shu Square by Birth Date — personal chart construction and brief interpretation (popular adaptation).
3. Annual Flying Star Forecast — seasonal page (published November–January), not presented as "ancient knowledge."

See Also

• Pythagorean Numerology — Western school: life path number, birth date reduction, letter table 1–9
• Pythagorean Square — psychomatrix by birth date; how it differs from the Lo Shu magic square
• Number 4 in Numerology — tetraphobia and the "death number" in Chinese tradition
• Number 8 in Numerology — China's luckiest number: the "prosper" homophone
• Numerology — general overview of the practice, schools, and scientific critique
• History of Numerology — numerical symbolism in ancient cultures
• Glossary — numerology terms, including Lo Shu and the Kua number