Dictionary/挂羊头卖狗肉

挂羊头卖狗肉 掛羊頭賣狗肉

guà yáng tóu mài gǒu ròu

ㄍㄨㄚˋ ㄧㄤˊ ㄊㄡˊ ㄇㄞˋ ㄍㄡˇ ㄖㄡˋ
Idiom
1lit. to hang a sheep's head while selling dog meat (idiom)
2fig. to cheat
3dishonest advertising
4wicked deeds carried out under banner of virtue