一五一十 Traditional form: 一五一十 Pinyin (reading): yīwǔyīshí Definitions: lit. count by fives and tens (idiom); to narrate systematically and in full detail Characters: 一 - one; a, an; alone 五 - five; surname 一 - one; a, an; alone 十 - ten, tenth; complete; perfect Traditional characters: 一 - one; a, an; alone 五 - five; surname 一 - one; a, an; alone 十 - ten, tenth; complete; perfect