Since ancient times, there has been such a thing as dream interpretation in human civilization. Duke Zhou is well known to us in China, and it is also recorded in the Jewish Bible.
Dreams have a mysterious color, which was considered to be related to the revelation or good or bad luck of God in ancient times. Psychologically, the systematic exploration of dreams began with Freud and Jung. Dream is a psychological phenomenon, which is related to people's psychological content. Although the specific meaning of dreams may not be easy to understand, complex dreams are basically a subconscious psychological content.
The source of dreams is related to the internal physiological stimuli during sleep, such as finding water to drink and WC. , and may eventually wake up, if it is a child, may pee.