(1) Dreams are images of people's psychological feelings.
(2) Dreams are the satisfaction of people's psychological desires.
(3) Dreams come from the internal and external stimuli of the human body.
(4) The dreamer recently heard or saw the psychological sensation imaging of the objective lens related to the dream.
Analysis: 1 The dreamer is reminding himself that he is dreaming.
Tired of work and study.
Stimulation from one's own body, feeling uncomfortable.
Bicycles are always flat and uncomfortable to ride by yourself.