虚张声势

虛張聲勢
zhāngshēngshì
(idiom) to bluff; to bluster; to make an empty show of strength

CEDICT

to bluff; to show false bravado; to make an empty show of strength

Wiktionary

故意夸大声威气势用以吓阻他人

重編國語辭典

故意夸大声威气势用以吓阻他人

維基詞典

Entry Composition