狗改不了吃屎
gǒugǎibùliǎochīshǐ
ㄍㄡˇ ㄍㄞˇ ㄅㄨˋ ㄌㄧㄠˇ ㄔ ㄕˇ
- 1lit. a dog can't stop himself from eating shit (idiom)
- 2fig. bad habits are hard to change
Example
俗話說:浪子回頭金不換;可俗話又說:狗改不了吃屎!
súhuàshuō làngzǐhuítóujīnbúhuàn kě súhuà yòu shuō gǒugǎibùliǎochīshǐ
The saying goes: to turn a new leaf is priceless. The saying also goes: a dog can't change their habits of eating shit!