吃里扒外

Traditional (Taiwan): 吃裡扒外

chīlǐpáwài ㄔ ㄌㄧˇ ㄆㄚˊ ㄨㄞˋ

    • to work against the interests of sb one derives support from to double-cross one's employer to bite the hand that feeds

      idiom

Character by character

Sources