If there is no reasoning with someone, it is impossible to persuade that person to change their opinions or actions.

there is no reasoning with someone She's absolutely determined to go and there's just no reasoning with her. 她已经铁了心要走，真没法让她回心转意了。

I tried to persuade her not to quit her job, but there was no reasoning with her.

There's no reasoning with Alex when he gets into one of his moods.

You know what it's like - there's no reasoning with a toddler.

I'm telling you, there's no reasoning with these people.