知己知彼- Wiktionary

知己知彼 DefinitionfromWiktionary,thefreedictionary Jumptonavigation Jumptosearch Contents 1Chinese 1.1Pronunciation 1.2Idiom 1.2.1Synonyms 1.2.2Derivedterms Chinese[edit] toknow;tobeaware 6thheavenlystem;self toknow;tobeaware that;those;(one