Duke Zhou dreamed that she was married but didn't.
In fact, people are dreaming when they sleep every night. When you finish a dream, if you change from sleep to semi-sleep or awake, you will leave a memory in the cerebral cortex. However, if you are still in a deep sleep for more than a quarter of an hour after your dream, you won't remember your dream when you wake up, so don't care too much about what you dreamed. Dreams themselves mean nothing to you, but their influence on your life may be far away.