Send a text message accusing my brother, but he won't reply.

First of all, I'm not particularly sure what happened between you two, because you didn't make it clear either. You just said that you gave him 10 thousand yuan when he was decorating, not because that 10 thousand yuan was unhappy, right?

I think you care about the friendship between brothers, and maybe he cares more about the friendship between brothers. It's just that something happened that made it hard for her to accept. Think about what problems you have with him recently.

Personally, I think that only by finding the crux of the problem between you two can you really untie this knot, otherwise it will be difficult to open it.

Of course, I think you can treat it cold. There's no need to chase him so hard, let him think for himself. In this case, there may be different results.