It has the functions of nourishing yin, moistening the lungs and relieving cough, calming the mind and calming the nerves; it is mainly used to treat dry cough due to yin deficiency, hemoptysis due to fatigue, lung fistula, deficiency heat, irritability, palpitations, insomnia, and dreaminess; it has the pharmacological effects of relieving cough, relieving asthma, removing phlegm, resisting fatigue, sedation, hypnosis, improving immunity, and increasing peripheral leukocytes