懂中文 Dong Chinese

杞人忧天

qǐ​rén​yōu​tiān

man of Qǐ fears the sky falling ; groundless fears

Definitions

杞人忧天 (杞人憂天) 

Qǐ​rén​yōu​tiān

man of Qǐ fears the sky falling (idiom); groundless fears

Sources