The brain controls all human life activities, such as speech, action, hearing, vision, and emotional expression, and can regulate the centers of digestion, respiration, circulation, urination, reproduction, and movement. The brain is the material basis of all thinking activities. Intelligence includes observation, attention, memory, thinking and imagination, and ability includes thinking and memory, learning gain, cognitive understanding, judgment and reasoning, comprehensive analysis, language expression, and social activity ability. The function of the cerebellum is mainly that the cerebellum becomes the coordinating center for maintaining balance and muscle tension through complex regulation and feedback mechanisms, and the cerebellum also enables the human muscular system to perform fine technical movements.