识二五而不知十

Explanation: Only know one aspect of the problem and not know how to fully observe. 　　Usage: Complex sentence; as predicate, attributive, clause; with derogatory 　　Source: Western Han Dynasty "Historical Goujian family": "King of the request and who is also fighting Jin Chu; Jin Chu did not fight, the more troops can not afford, is known 25 and 10 also do not know."