不知进退

Explanation: Should be moving forward or do not know the back. No decision metaphor. Also described the speech act is not measured. 　　Usage: Verb-object type; for the predicate; described as reckless 　　Source: Han Xun Yue "Ji Han Ji Ai under the": "His Majesty the fault of the fear of ridicule, there are bad people do not know Yin advance and retreat of the disaster." 　　Examples: They have too much of me! Now I have ~, why tell them curse me? (Qing Cao Xueqin's "Dream of Red Mansions" Forty-fifth back) 　　Results: One foot on the threshold collapse 　　Postscript: One foot on the threshold collapse Thesaurus:  Act recklessly, guiltless interest, abrupt, guiltless deep, guiltless accident, Primary calf, have an exaggerated opinion of one's abilities as one who does not know the immensity of heaven and earth, Do not know the level of, be very promising Antonym Group:  Reasonable notice, Reasonable notice of