羊毛出在羊身上

Explanation: Compared to the others on the benefits of the surface, but in fact this advantage is the cost attached to the people in. 　　Usage: Complex sentence; as object clause; containing derogatory 　　Source: Qing Li Baojia "Bureaucrats" twenty-seventh of total return to Dahua small things, little to nothing. Fleece, and other re-surnamed Jia out of two, to take it safely in the past, not to end up with you. "