I dreamed that there was a lot of long hair under my nails.

Dreams are all related to real life. Think about whether you have encountered anything about hair recently, and contact it in peacetime, which may have results.

Also, "Duke of Zhou" is an ancient book used for divination, which has no scientific reference value. Some of it is just experience, but it should be linked with your real life.

Not all dreams predict what will happen in the future, so don't worry too much.