割尾巴

gēwěiba ㄍㄜ ㄨㄟˇ ˙ㄅㄚ

    • to remove leftover bad ideas or habits thoroughly

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
cut off the tail
Meaning
To thoroughly remove leftover bad ideas or habits. Political slogan flavour, dated.

Sources