有两条大家是信得过的，一条是坚持原则，一条是讲话算数。

Everyone can count on China in two things. First, China adheres to principles. Second, China means what it says.

youdao

我讲话是算数的，决不反复。

I mean what I say and shall never react from [go back on] my words.

《新英汉大辞典》

我对此事是严肃对待的，我讲话认真算数。

I'm serious about this. I mean what I say.

youdao