Patients with moderate depression are quite serious. The core manifestations in clinical practice include low mood, inability to feel happy, reduced energy, and predominantly negative thinking. These symptoms often lead to a decline in the patient's social and occupational functioning, affecting their work, study, life, social interactions, and family life. Patients typically present with a lack of desire to groom themselves or pay attention to their attire, and they often have a dull gaze and an unpleasant emotional experience. There is generally a lack of energy and interest. In terms of cognitive thinking, they often exhibit feelings of worthlessness, pessimism, guilt, uselessness, or despair. Behaviorally, they often show psychomotor retardation, meaning they walk and act slowly, think sluggishly, cannot relax, and sometimes exhibit symptoms of restlessness.