借古喻今

Explanation: By: guise; metaphor: metaphor. Under the guise of the ancient metaphor of the ancient reality of modern people do this thing. Thesaurus:  make use of the subject under discussion to put over one's own ideas, use the past to disparage the present, Zhijimagou, The old days, make the past serve the present, Curse that dog pig, Yigufengjin, The ancient metaphor for the modern, Old were Kam, cite past and prove today