软硬不吃

Traditional (Taiwan): 軟硬不吃

ruǎnyìngbùchī ㄖㄨㄢˇ ㄧㄥˋ ㄅㄨˋ ㄔ

    • unmoved by force or persuasion

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
eats neither soft nor hard
Meaning
Won't be moved by either gentle persuasion or pressure; stubborn. Critical.

Sources