瞒上不瞒下

Explanation: Hide the truth: also as "Man" to deceive, deceived. Without the knowledge of the above, tell the following. Refers to the gang cheating, not to their superiors know. 　　Source: Qing Li Baojia 'Bureaucrats' 36th back: "Now is the top Tangguan know the awful things. Upon my honor brother said: originally hiding these things on my honor, the others often is My brother and brother often handled for others. "