抽丁拔楔

Explanation: Analogy to solve problems. Ding, "nail" the ancient word. 　　Source: Yuan Li Shouqing "degree Liu Tsui," the fourth off: "There is not a fear of the public, Heart doubt, please hang asked, pulling me with him pumping the small wedge." One for "Ding pumping pumping wedge." Thesaurus:  Badingchouxie