吃里扒外

Explanation: By the side benefits of metaphor, but on the other serve the dark 　　Usage: Joint type; as predicate, object; containing derogatory 　　Source: Zhou Libo, "Storm" the first: "people across the belly, food preparation could not have that guy to go the expense of air leakage from outside, called Han youngest ran away." Thesaurus:  work for the interest of an opposing group at the expense of one’ s own