play the system idiom disapproving
钻系统（或制度）的空子
to use the rules of a system to get an advantage for yourself, in a way that is wrong or dishonest
There are some really powerful people who are in it for self-interest, who kind of play the system for personal and institutional gain. 有一些非常有权势的人为了自身利益而参与其中，他们为了个人和所属机构能得到好处而钻系统的空子。