Dream is a subjective experience, an imaginary image, sound, thinking or feeling produced by people during sleep, which is usually involuntary. The scientific discipline of studying dreams is called the study of dreams.
Dreaming is to artificially implant information into people's brains with scientific tools! So you can close your eyes, watch videos and sounds, and control your thoughts.
China was the first country to study dreams. As early as two thousand years before Freud, we had a monograph on dreams-Duke Zhou.
Dreaming is related to REM sleep, which is a shallow sleep state in the later stage of sleep. It is characterized by rapid eye movement, pontine stimulation, accelerated breathing and heartbeat, and temporary limb paralysis. Other sleep periods may also dream, but rarely. Lack of sleep when entering deep sleep is considered to be related to dreaming.
Dreams are illusory and have nothing to do with reality. Adjust yourself reasonably and hope to adopt them.