Insufficiency of spirit refers to mild loss of vitality usually seen in patients with deficiency syndrome, the manifestations of which are dispiritedness, amnesia, somnolence, low voice and no desire to speak, lassitude and slow movement, etc..

神气不足是指轻度活力缺乏，通常见于虚证患者，其表现表现为情绪低落、健忘、嗜睡、声低懒言、倦怠和行动迟缓等。