揪尾巴

jiūwěiba ㄐㄧㄡ ㄨㄟˇ ˙ㄅㄚ

    • to seize on a problem that has come to light and not let go

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
grab the tail
Meaning
To seize on a problem that has come to light and refuse to let go of it.

Sources