披外衣

pīwàiyī ㄆㄧ ㄨㄞˋ ㄧ

    • to disguise something to create a false impression

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
to put on an outer coat
Meaning
To disguise something and create a false impression. Critical.

Sources