In many Asian cultures, the number 4 is deeply associated with misfortune, death, and bad omens.
In countries like China, Japan, and Korea, this superstition is not merely a popular myth, but a deeply ingrained belief that influences daily life, architecture, and technology.
Unlike in the West, where the number 13 often represents bad luck, in East Asia, it is the number 4 that evokes rejection, fear, and systematic avoidance.

Why is the number 4 associated with misfortune?
The origin of this superstition is primarily linguistic.
In Mandarin Chinese, the number 4 is pronounced sì (四), very similarly to the word sǐ (死), which means “death.”
This phonetic coincidence has, for centuries, generated a strong psychological association between the number and demise.
Something similar happens in Japanese: the number 4 can be pronounced shi, which also means “death.”
In Korean, the reading sa (사) also shares this connotation.
This triple cultural coincidence has consolidated the idea of 4 as a cursed number throughout East Asia.
The number 4 in everyday life: calls, time, and numbering
The superstition does not remain on a symbolic level.
In China, Japan, and Korea, the number 4 is actively avoided in multiple areas:
- Building numbering: it is common for the 4th floor not to exist, going directly from 3 to 5.
- Hospitals: rooms, beds, or operating rooms with the number 4 are often omitted.
- Phone numbers: calls and phone lines containing multiple "4s" are considered very bad luck. Nobody wants to receive calls from numbers associated with death.
- License plates and banknotes: combinations with the number 4 are avoided.
- Time measurement: in some traditional contexts, time slots or dates associated with 4 are considered unfavorable for weddings, travel, or important business.
In Japan, even gifts are avoided in groups of four, as giving "four objects" is interpreted as a bad omen.

The number 4 versus the number 8: bad and good luck
In contrast, the number 8 is considered a lucky number in China due to its similar pronunciation to the word "prosperity."
This opposition has further reinforced the negative character of the number 4, creating a clear duality between fortune and misfortune.
It is no coincidence that important events, such as the 2008 Beijing Olympic Games, were inaugurated on 08/08/08, while dates with the number 4 are avoided for various important celebrations.
The number 4 in cinema, series, and anime
This superstition has been widely exploited in popular culture:
- In Japanese and Korean horror cinema: films and series use numerical symbolism related to death, where 4 appears recurrently in rooms, key sequences, phone calls, clocks, or file numbers linked to deaths.
- In Chinese culture: in psychological suspense and horror films, the number 4 is used as a warning or omen of tragedy.
Although not always explicitly mentioned, the Asian audience immediately recognizes the symbolism.