Duke Zhou, I dreamed that I fell off the roof.

It means anxiety. You can't control your real life. Another explanation is that it's just a nightmare, which may be related to something to give up. An interesting explanation is that this kind of dream usually occurs in the first stage of sleep. They are usually accompanied by muscle spasms and convulsions. If we have this kind of dream, we often wake up because of some kind of shaking of our bodies. This trembling mechanism ensures that we can wake up in time and be alert to possible threats.