多管闲事

多管閒事
duōguǎnxiánshì
meddling in other people's business

CEDICT

to bother to interfere others' business; to have an oar in everyman's boat; to meddle in other people's business

Wiktionary

本分插手别人事情

重編國語辭典

本分插手他人事务

維基詞典

Entry Composition