懂中文 Dong Chinese

蚍蜉撼树

pí​fú​hàn​shù

lit. an ant trying to shake a tree

Definitions

蚍蜉撼树 (蚍蜉撼樹) 

pí​fú​hàn​shù

lit. an ant trying to shake a tree; to overrate oneself (idiom)

Sources