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🇰🇷 South Korea

Korean number culture blends ancient yin-yang philosophy with Chinese-character wordplay. Three and seven are welcomed as fortune-bringers, while four is shunned so thoroughly that elevator panels often replace it with the letter F.

Lucky Numbers

3
Three stands for completeness and balance — Koreans say important things come in threes, from the three gods of the founding myth to best-of-three games of rock-paper-scissors.
7
The worship of the Seven Stars (Big Dipper) merged with the Western lucky seven, making 7 a byword for good fortune in lotteries and prize draws.

Unlucky Numbers

4
The Sino-Korean reading of four (sa) matches the word for death, so it has long been avoided. Older buildings still mark the fourth floor as F in elevators.

Travel & Business Tips

Gifts or congratulatory money arranged around 3 or 7 make a good impression in Korea. Do not be puzzled if an elevator shows F instead of a fourth floor — that is the reason.

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