拉大旗作虎皮 [－－－－－－]

Jyutping laai1 daai6 kei4 zok3 fu2 pei4
Pinyin lā dà qí zuò hǔ pí

Definitions (CC-CEDICT)
  1. lit. to wave a banner as if it were a tiger skin (idiom)
  2. fig. to borrow sb's prestige
  3. to take the name of a great cause as a shield