一诺千金

yī nuò qiān jīn

a promise worth its weight in gold

Character by character

一yī
one

诺nuò
promise

千qiān
thousand

金jīn
gold

他一诺千金，答应的事一定会做到。

His word is his bond — whatever he promises, he does.

Tone: positive (praise).

From 《史记》: people said a hundred catties of gold were worth less than one promise from Ji Bu.

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