窥豹一斑

Explanation: From bamboo in the hole where the leopard, only to see the body of a leopard markings. Analogy can only see part of something that is not fully or slightly seen from. 　　Usage: Verb-object type; as Subject and Object; analogy can only see a part of things 　　Source: "Book of Jin Wang Xian Zhi Biography": "Say: 'south wind did not compete.' Disciples said: 'The Lang also a Limited Time see this!'" 　　Examples: Some people ignorant, ~, but the chattering classes, to show off. Thesaurus:  Glimpse