The unconscious is an energetic, intense, and efficient mental system outside of consciousness. The main features of the unconscious are non-rationality (primitive impulses), non-verbality, non-morality, non-logicality, non-timeliness, non-knowability.

The unconscious is the deep foundation of psychology and the inner driving force of human activities, which determines the entire conscious life of people, and even the fate of individuals and the entire nation. This is the theoretical cornerstone of the psychoanalytic school.