心中有數- Wiktionary

心中有數 DefinitionfromWiktionary,thefreedictionary Jumptonavigation Jumptosearch Contents 1Chinese 1.1Pronunciation 1.2Idiom 1.2.1Synonyms Chinese[edit] inone'smind;inone'sheart toknowexactlyhowthingsstand;tohaveadefiniteideaofwhatoneisdoing