Lotus seed is a herb with the efficacy of clearing the heart and tranquilizing the mind (stabilizing the mind by getting rid of inner vexing heat), communicating with the heart and kidneys (the heart’s fire descends and the kidneys’ water ascends to restrain each other), etc. It is used for treating heat entering the heart pericardium (the evil of heat invading the pericardium), and the failure of communicating with the heart and the kidneys (the heart’s fire is strong, the kidneys’ yin is weak, and the physiological functions of the heart and the kidneys are dysfunctional). Lotus heart is the dried young leaves and embryonic root in the mature seeds of lotus, family Water Lily. It is bitter in taste and cold in nature. It belongs to the heart and kidney meridians. It has the effect of clearing the heart and tranquilizing the mind, transporting the heart and kidney, astringing essence and stopping bleeding. It is used for treating heat entering the pericardium, delirium (confusion, nonsense), lack of communication between the heart and kidney, insomnia, spermatorrhea, and vomiting of blood due to blood heat. Lotus heart is cold in nature, easy to injure yang qi, so it needs to be used with caution in cases such as spleen and stomach deficiency (spleen and stomach weakness and cold) and body yang deficiency. It is recommended that patients be treated with medication under the guidance of a doctor, do not take medication on your own, so as not to delay the condition.