狗改不了吃屎

gǒugǎibùliǎochīshǐ ㄍㄡˇ ㄍㄞˇ ㄅㄨˋ ㄌㄧㄠˇ ㄔ ㄕˇ

    • lit. a dog can't stop himself from eating shit (idiom)
    • fig. bad habits are hard to change

Character by character

Saying俗语俗語

Proverb谚语諺語 · In everyday use

May offend: vulgar language

Literally
a dog can't give up eating excrement
Meaning
A bad person can't change their bad habits. Coarse and insulting. Close to 'a leopard can't change its spots'.

Sources