一五一十 - ChineseDict

yi1

一

wu3

五

yi1

一

shi2

十

chengyu

lit. count by fives and tens (idiom); to narrate systematically and in full detail

一 (一): one; single; a (article); as soon as; entire; whole; all; throughout; "one" radical in Chinese characters (Kangxi radical 1); also pr. [yao1] for greater clarity when spelling out numbers digit by digit
五 (五): five; 5
一 (一): one; single; a (article); as soon as; entire; whole; all; throughout; "one" radical in Chinese characters (Kangxi radical 1); also pr. [yao1] for greater clarity when spelling out numbers digit by digit
十 (十): ten; 10

Examples

他把他在非洲的所見所聞一五一十地告訴了我們。