lā dà qí zuò hǔ pí

ㄌㄚㄉㄚˋ ㄑㄧˊ ㄗㄨㄛˋ ㄏㄨˇ ㄆㄧˊ

Phr

1lit. to wave a banner as if it were a tiger skin (idiom)

2fig. to borrow sb's prestige

3to take the name of a great cause as a shield