揭畫皮

Simplified: 揭画皮

jiēhuàpí ㄐㄧㄝ ㄏㄨㄚˋ ㄆㄧˊ

    • to strip away a disguise
    • to show something in its true ugly form

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
tear off the painted skin
Meaning
To strip away a disguise and show something ugly in its true form. From the legend of a demon wearing a beauty's skin.

Sources