挖空心思

Explanation: Analogy by all means. 　　Usage: Verb-object type, as a predicate, adverbial; containing derogatory 　　Source: Lu Xun "lace Literature exam three ugly" for example, asked, "Thirteen Classics" What, Wen Tianxiang, is that the DPRK people, all do not need to rack their brains to do their own, one to do, down bad. " 　　Examples: For example, ask "Thirteen Classics" What, Wen Tianxiang, is that the DPRK people, all ~ do not need themselves, one to do, down bad. (Lu Xun "lace Literature exam three ugly") 　　Riddle: Tin Thesaurus:  in oneway or another, To persist Mansheng, Danzhijielv, To persist Man Health, by all means