杞国忧天 (杞國憂天) qǐ guó yōu tiān

qǐ guó yōu tiān set phrase the state of Qi worries about the sky falling; to worry based on groundless concerns
Domain: Idiom 成语 , Subdomain: , Concept:
Notes: A variant of 杞人忧天 (CC-CEDICT '杞國憂天'; Guoyu '杞國憂天')