Do you know any Chinese people? If you don't, why/how are they going to know or care about what you are doing? It sounds to me like it is delusional.

I think it is too hard for any one group to bring down another group as that would alter everything and there's no way to control that. Even if the Chinese were deliberately trying to destroy the US economy, that would wreck their economy, since we're so big and owe them so much, and I don't think they want that.