了如指掌

Explanation: Describe the understanding of things very clearly, as to give people something to see on the palm of the same. 　　Usage: Partial official; as predicate; that is very understanding of things 　　Source: Pre Confucius "The Analects of Confucius eight yi": "or ask imperial ancestral sacrifice, said. Confucius said: 'I do not know him; knowing that the speaker is to the world also, its almost as Adams shows all!' Refers to the palm." 　　Examples: Only the contrast, the level of beauty and ugliness, then ~ a. (I have heard more than one "winter night reviews") 　　Riddle: Missed; Confirmed; empty-handed Thesaurus Group:  omniscient, tacit understanding, have a tacit understanding; give tacit consent; tacit understanding, boson friends, as if enumerating one's family valuables— very familliar with one's subject, To understand clearly Into the Huai, understand tacitly; I appreciate your kindness, Minds think alike, knowing one's own situation and that of the enemy, Several chest, Zhibi confidant take penetrating