骗子只能衬托傻子的存在
[piàn zi zhĭ néng chèn tuō shă zi de cún zài]
This translates to 'cheaters only highlight the existence of fools'. It expresses an opinion about scams where it seems that without a victim willing to believe in a deception, the cheater's tricks wouldn't be noticed. In this sense, the foolishness of victims unintentionally makes the cheats obvious.