莫测高深

Explanation: Advanced degree can not speculate. Refers to the life skills approach, or speak, the contents of the article (no more than the front, with a derogatory sense). 　　Usage: Verb-object type; as predicate, attributive; containing derogatory 　　Source: Han Ban Gu's "Han Yan Chuan-sickness": "Limin exemplifies the measured depth of its meaning." 　　Examples: Magistrate, of course - we do not have the magic bullet in the. (Lu Xun's "canopy _set_ this and that.") Thesaurus:  fiddler, Try to conceal a mistake,only to make it more conspicious, play a sly trick by stealing the sky and putting up a sham sun, present a false picture of peace and prosperity, mystification, deceive those over and bully those below, swindle and bluff, deceive one's superiors and subordinates conceal from higher authority and deceive lower authority, blab, cod, abracadabra, boloney, bubble, talk a lot without seeming to say anything important, blah, flapdoodle, empty words, chimera, mystification, flimflam idea, confound notion, nonsense, Baloney, worthless ideas, etc, baloney, crock, Online games it play a sly trick by stealing the sky and putting up a sham sun