The emptiness and powerlessness in the heart. The blank WeChat cover of depressed patients reflects their inner emptiness, powerlessness and lack of motivation. Depression is a common mental illness. Patients often feel depressed, lose interest and happiness, and lose enthusiasm and motivation for life. The WeChat cover Blankness is a psychological expression of patients. They feel empty inside, unable to find content suitable for display, or have no interest and expectations in life. This psychological state requires professional psychological treatment and support to help patients recover.