







司马昭之心,路人皆知 is a Chinese idiom (chengyu) meaning “Sima Zhao's true intentions are obvious to everyone”. A universally known ambition or ulterior motive. Literally, “Sima Zhao's heart, all passers-by know”.
During the Three Kingdoms period, after Emperor Wen of Wei, Cao Pi, died, Sima Yi and Cao Shuang became regents for Cao Rui.
After Cao Rui's death, Sima Yi eliminated Cao Shuang.
Later, Sima Shi, Sima Yi's son, installed Cao Mao as the new emperor.
However, Sima Zhao, Sima Shi's younger brother, paid no respect to Emperor Cao Mao and even threatened to be granted the title of Duke of Jin, which was a clear sign of his ambition to usurp the throne.
Outraged, Emperor Cao Mao famously exclaimed, 'Sima Zhao's heart, everyone on the street knows!' meaning Sima Zhao's treacherous intentions were obvious to all.

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Open the tool →司马昭之心,路人皆知 (sī mǎ zhāo zhī xīn , lù rén jiē zhī) is a Chinese idiom (chengyu) meaning “Sima Zhao's true intentions are obvious to everyone”.
司马昭之心,路人皆知 is pronounced sī mǎ zhāo zhī xīn , lù rén jiē zhī in Mandarin Chinese.
Literally, 司马昭之心,路人皆知 means “Sima Zhao's heart, all passers-by know”. It is used to mean “Sima Zhao's true intentions are obvious to everyone”.
司马昭之心,路人皆知 comes from a classical Chinese story dating back to ancient China. The full story is on this page.
路人:路上的人,指所有的人。比喻人所共知的野心。