蒙虎皮

ménghǔpí ㄇㄥˊ ㄏㄨˇ ㄆㄧˊ

    • to use a borrowed name or authority to frighten or deceive people

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
cover oneself in a tiger skin
Meaning
Use a borrowed name or authority to frighten or deceive people. Critical.

Sources