A foreign visitor steps into an elevator in an office building in Hong Kong, Shanghai, or Taipei, and while scanning the buttons notices something odd: after the third floor, the next button says five. There's no fourth floor. There's no fourteenth either, nor twenty-fourth, and certainly no forty-fourth. The numbering simply skips, as if those floors didn't physically exist — though of course they do; they've just been given a different number, or left without visible numbering in the building's public spaces.
The reason behind this systematic omission is purely linguistic, but its cultural weight is enormous. In Mandarin, the number four is pronounced sì, a sound nearly identical to the word for "death," also pronounced sǐ, with a minimal tonal difference that's easy to mix up even for native speakers in certain contexts. This phonetic similarity turned four, over generations, into a number directly associated with bad luck, misfortune, and, in its most extreme form, death itself.
This phenomenon, known internationally as tetraphobia, isn't limited to mainland China: it extends with similar force to Hong Kong and Taiwan, and, with its own linguistic variations, to Japan and South Korea, where the number four also sounds close to the word "death" in their respective languages (shi in Japanese, sa in Korean). In that sense, it's an Asian cultural equivalent to the Western fear of the number thirteen, reflected in the missing thirteenth floor of countless hotels and buildings across Europe and the Americas.
In Mandarin, the word for "four" (四, sì) sounds almost identical to the word for "death" (死, sǐ).
The practical impact of this belief goes well beyond building numbering. It's common for hospitals to avoid assigning room number four to patients, especially in sensitive areas like maternity or intensive care; for license plates with multiple fours to sell for lower prices than those with numbers considered lucky; for hotels to avoid assigning room 444 unless a guest specifically requests it; and for formal occasions, like weddings or business gifts, to avoid giving objects in groups of four, favoring numbers like eight or nine instead — considered extremely lucky for the opposite phonetic reasons.
That contrast is telling: while four is avoided, the number eight is actively sought after, because its Mandarin pronunciation (bā) sounds close to the word for "prosperity" or "wealth" (fā). It's no accident that the Beijing 2008 Olympics were deliberately opened on August 8, 2008, at 8:08 in the evening — a date and time chosen specifically for its combination of eights, considered extraordinarily auspicious. Numbers and words that sound alike carry, in Chinese culture, a symbolic weight that goes far beyond their literal mathematical value.
This linguistic-cultural phenomenon coexists, without much apparent contradiction, with a modern, technologically advanced, and in many ways deeply pragmatic Chinese society. International companies operating in Chinese markets have learned to adapt their products, prices, and even brand names to avoid unintentional associations with the number four, understanding that ignoring this cultural sensitivity can directly affect consumer perception — even among younger, more urban generations who may not literally believe in the bad luck but keep up the social habit out of custom and collective respect.
What this story reveals, at its core, is the enormous power language has over the cultural perception of reality: a simple phonetic coincidence, repeated across generations, ended up literally reshaping the architecture of thousands of buildings, the numbering of license plates, and even the design of world-class official ceremonies. The number four, mathematically identical everywhere, became a completely different symbol only because, in one particular language, it happened to sound too much like a word nobody wanted to invoke by accident.
