钻天打洞

Explanation: Metaphor use every opportunity to seek personal gain. 　　Usage: Joint type; as predicate, object, attribute; containing derogatory 　　Source: Qing Zeng Pu, "Flower," the twenty-second back side gearing Yu Yang Bo and Guo treasurer when the chapter is here for the wind Sun Zhuang Yan, drilling holes in the moment days. "