前怕龙，后怕虎

Explanation: Analogy timid, worry too much. 　　Source: Ming Feng Weimin, "child being overturned state": "candid hero, Kiyonaga figures, the former fear of the wolf tiger scared. _Set_ plan to make drugs, only to be jealous of the good people." 　　Examples: To reform can not be ~, to be bold and innovative, hard in practice, to be successful.