Duke Zhou dreamed that he was undercover, and he was almost caught, but later he was saved.

Glad to answer for you!

It's just a dream, Conan. Dreams are false, don't take them seriously.

Duke Zhou mentioned that dreams are contrary to reality, which means that they can't happen in real life. At the same time, I think it's just that your arms are pressed against your chest when you sleep, which leads to dreaming.