摸不着头脑

Explanation: Refers to figure out how it was. 　　Source: Qing Li Ruzhen "Flowers in the Mirror" was back with more than forty-nine public and agreed that the blue tone, if the flowers out in the past. Two scratching their heads, and not negativism, only for the time being to stay. " 　　Examples: Man head down, do not see the face. Sheep guide full of suspicion is ~. ★ Qing Li Baojia "Bureaucrats" thirty-back