If 8 is the number that people chase, 4 is the number they run from. Across Chinese-speaking communities worldwide, the number 4 is treated with a level of avoidance that shapes real estate pricing, elevator design, phone number selection, hospital room numbering and even product packaging. This avoidance is so widespread that it has its own name: tetraphobia, from the Greek tetra (four) and phobia (fear). But the word "fear" is slightly misleading. What drives the avoidance of 4 in Chinese culture is not fear in the anxious sense. It is a deeply embedded cultural reflex rooted in a single phonetic coincidence.
The Sound Behind the Avoidance
In Mandarin Chinese, the number 4 is pronounced 四 . This sound is nearly identical to a word that the Chinese language considers deeply unfavourable. The association is so strong and so universally understood that it requires no explanation within Chinese-speaking communities. Everyone simply knows: 4 sounds like something you do not want to invoke.
This phonetic link operates through the same xieyin (谐音 , "harmonious sounds") system that makes 8 so desirable. In Chinese culture, words that sound alike carry each other's energy. Where 8 benefits enormously from sounding like 发 ("prosperity"), 4 carries the burden of its phonetic neighbour. The result is a cultural avoidance pattern so consistent that it has reshaped entire industries.
The avoidance of 4 is not about logic or probability. No one believes that the number 4 will cause something bad to happen. The avoidance is about resonance: surrounding yourself with sounds and symbols that echo the life you want rather than the outcomes you wish to avoid. It is the same principle that makes people choose flowers over weeds for a wedding table, even though the weeds pose no actual threat.
How 4 Sounds Across Chinese Dialects
The unfavourable association of 4 is not limited to Mandarin. It persists across the major Chinese language groups, which is part of why the avoidance is so universal:
In Mandarin, 四 is pronounced si (fourth tone). In Cantonese, it is pronounced sei. In Hokkien, it is si. In each case, the sound closely resembles the local pronunciation of the same unfavourable word. This cross-dialectal consistency means that the avoidance of 4 is not a regional quirk. It is a pan-Chinese phenomenon, shared by Mandarin speakers in Beijing, Cantonese speakers in Hong Kong and Hokkien speakers in Xiamen, Taipei and across Southeast Asia.
Vanishing Floors: 4 in Architecture
The most visible expression of tetraphobia is in building design. Across China, Hong Kong, Taiwan, Singapore, Malaysia and cities with significant Chinese populations, buildings routinely skip floor numbers containing the digit 4.
In the most thorough cases, a 50-storey building might skip floors 4, 13, 14, 24, 34, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49 and 54. That is 16 missing floors out of 50. The physical 50th floor might be labelled "66" on the elevator panel. This is not unusual in cities like Hong Kong, where some residential towers have elevator panels that jump from 39 straight to 50.
The number 13 also appears crossed out in the diagram above. This reflects a blending of Western and Chinese avoidance patterns in international buildings. In purely Chinese contexts, 13 is not inherently avoided (in fact, 13 contains a 3, which is neutral, and a 1, which is associated with beginnings). But in global cities, developers often skip both 4 and 13 to accommodate residents from both cultural backgrounds.
Phone Numbers, Addresses and License Plates
The economic impact of tetraphobia is measurable. Properties with the number 4 in their address typically sell at a discount compared to otherwise identical properties. Phone numbers containing 4 are priced lower than those without. License plates with multiple 4s are the least popular at auction, while those with multiple 8s command the highest premiums.
The combination 44 is considered especially unfavourable, as it doubles the phonetic association. Some mobile carriers in China and Hong Kong price phone numbers with 44 significantly lower than average, while numbers ending in 44 are sometimes given away free as an incentive. By contrast, numbers ending in 88 (double prosperity) are sold at a premium, sometimes costing hundreds of times more than a number ending in 44.
Hospitals, Hotels and the Number 4
The avoidance of 4 is especially pronounced in hospitals. Because hospitals are places where health is vulnerable, the phonetic resonance of 4 is considered particularly unwelcome. Many hospitals across China, Taiwan, Hong Kong, Singapore and Japan skip room 4, ward 4 and floor 4 entirely. Some hospitals avoid any room number containing the digit 4 at all.
Hotels in Chinese-speaking regions often skip room numbers with 4 while prominently featuring rooms with 8. A hotel might have no room 404 but designate room 888 as the presidential suite. Airlines with routes serving Chinese-speaking markets sometimes avoid row 4 in their seating charts, just as Western airlines sometimes skip row 13.
Gift-giving follows the same logic. Giving a set of four items can be seen as inconsiderate if the recipient is aware of the symbolism. Sets of six (六 , sounding like 溜 , "smooth") or eight (八 , sounding like 发 , "prosperity") are strongly preferred. Even the number of courses at a banquet or dishes on a table is considered: serving exactly four dishes at a formal dinner would be unusual and potentially awkward.
The Visual Character of 四
Beyond its sound, the Chinese character for 4 carries a visual quality that reinforces its cautious reputation. The character 四 is enclosed on all sides, boxed in by its outer strokes. Compare this to the character for 8 (八), whose two strokes open outward like arms spreading wide. The visual contrast is striking:
This visual symbolism, while secondary to the phonetic meaning, adds another layer. 四 looks constrained, while 八 looks free. In a culture where openness and flow are valued (the concept of 气 , the flow of energy, is central to Chinese philosophy, medicine and feng shui), a character that appears blocked or sealed carries a subtle negative connotation that the open form of 八 avoids.
4 in Yin-Yang Classification
In the Chinese yin-yang system, 4 is a yin number (even numbers are yin, odd numbers are yang). Yin energy is associated with receptivity, stillness, cooling and inward movement. On its own, yin is neither positive nor negative. It is simply one half of a complementary pair.
However, when combined with the phonetic association, the yin quality of 4 takes on a specific character. Where the yin nature of 8 suggests receiving prosperity (a welcome form of receptivity), the yin nature of 4 suggests absorbing the energy of its unfavourable sound. The same yin quality reads very differently depending on what the number sounds like. This is a useful reminder that in Chinese number symbolism, phonetics almost always overrides other considerations.
Tetraphobia Beyond China
The avoidance of 4 is not unique to Chinese culture. It extends across East Asia to any culture influenced by Chinese linguistic traditions.
4 (shi) sounds like the Japanese word for the same unfavourable concept. An alternate reading, yon, is often used specifically to avoid the association. Hospitals and hotels routinely skip the number.
The Sino-Korean pronunciation of 4 (sa, 사) carries the same phonetic echo. Many Korean buildings skip floor 4, and the number is avoided in hospitals and product numbering.
While less pronounced than in China, the influence of Chinese number symbolism means 4 is treated with some caution in Vietnamese culture, particularly in business and property contexts.
In Singapore, Malaysia, Indonesia and the Philippines, large Chinese diaspora communities maintain the avoidance of 4 in property, business and daily life, influencing building design across these multicultural societies.
When 4 is Not Avoided
It would be misleading to suggest that the number 4 is always and everywhere treated as negative. There are important exceptions and nuances.
The Four Great Inventions (四大发明 ) of ancient China: papermaking, printing, gunpowder and the compass, are a source of immense cultural pride. The Four Divine Beasts (四灵 ): the Azure Dragon, White Tiger, Vermilion Bird and Black Tortoise, are revered protectors in Chinese mythology. The number 4 itself is not inherently negative. It is the sound that causes the avoidance, not the quantity.
The Four Gentlemen (四君子 ) of Chinese art: plum blossom, orchid, bamboo and chrysanthemum, are among the most beloved subjects in Chinese painting and poetry. The Four Books (四书 ) of Confucianism: the Analects, the Mencius, the Great Learning and the Doctrine of the Mean, formed the foundation of Chinese education for over a thousand years. The Four Great Classical Novels (四大名著 ): Romance of the Three Kingdoms, Journey to the West, Water Margin and Dream of the Red Chamber, are the pillars of Chinese literature.
In all these cases, 4 represents completeness: four corners, four directions, four seasons, four pillars. The quantity itself carries a sense of wholeness. It is specifically the spoken sound of 4, not its numerical meaning, that triggers the avoidance. In written contexts, in historical references and in cultural groupings, the number 4 is used freely and even proudly.
Combining 4 With Other Numbers
The cultural weight of 4 can be softened, redirected or even neutralised when it appears alongside other digits. The combination 48 (四八 ) is sometimes read as "sure to prosper," because 8 is so powerful that it can override the negative pull of 4. The combination 54 (五四 ) carries strong patriotic associations in China because of the May Fourth Movement (五四运动 ), a pivotal moment in modern Chinese history. Context matters: a number containing 4 is not automatically unfavourable if the surrounding digits or cultural references shift its meaning.
That said, the standalone number 4, or combinations like 44, 444 and 14 (which sounds like yao si, "will [encounter the unfavourable word]" in some dialects), remain firmly avoided in phone numbers, addresses, license plates and pricing.
A Cultural Reflex, Not a Superstition
The avoidance of 4 is sometimes dismissed by outsiders as superstitious. But within Chinese culture, it functions more like a cultural reflex: an automatic response to a phonetic association that has been reinforced by millions of people over thousands of years. It is not fundamentally different from the Western discomfort with the number 13, which similarly influences hotel design, airline seating and building numbering across the Western world. The mechanism is the same. Only the number is different.
What makes the Chinese avoidance of 4 particularly powerful is its phonetic specificity. The Western aversion to 13 is based on historical and religious associations that many people cannot articulate. The Chinese avoidance of 4 has a clear, immediate and universally understood cause: it sounds like a word no one wants to hear. That phonetic directness is why tetraphobia is more consistently practised, more economically impactful and more architecturally visible than triskaidekaphobia (fear of 13) has ever been in the West.
In Chinese number symbolism, 4 is a reminder that sound carries weight. The same xieyin system that elevates 8 to the most sought-after digit in phone number auctions also makes 4 the digit that buildings erase from their elevator panels. Both reactions spring from the same cultural logic: the words we surround ourselves with shape the energy of our environment. And in a culture that takes this seriously, every digit matters.