小题大作

小題大作
xiǎozuò
variant of 小题大做 xiǎozuò

CEDICT

to make a fuss over a trifling matter; to make a mountain out of a molehill; to blow out of proportion

Wiktionary

题目文章比喻小事当成大事处理故意夸张渲染

重編國語辭典

Entry Composition