Gui Yuan is Longan meat. This medicine can treat insomnia, but it is only effective for insomnia caused by straining the heart and spleen and excessive thinking, and is a dual-purpose medicine. The main effect of longan meat is to enter the heart and spleen meridians, which can tonify the heart and spleen (using tonic drugs to tonify the heart and spleen), nourish the blood and tranquilize the mind (through nourishing the blood to stabilize the mind and soothe the emotions), and is suitable for insomnia caused by overthinking and excessive thinking, heart palpitations and heart palpitations (heartbeat is violent, panic and restlessness), dizziness and fatigue, and deficiency of qi and blood and deficiency of blood and atrophy of the yellowish condition. From its medicinal properties and main treatment, it can be seen that longan meat can specialize in the treatment of insomnia. Longan meat is usually used in combination with other herbs, such as Angelica sinensis, which is good at activating blood circulation and nourishing blood, relieving pain and regulating menstruation, to enhance the efficacy of the medicine and improve insomnia, dreaminess and forgetfulness caused by blood deficiency. Another example and good at opening the orifices to wake up the spirit (open the brain orifices, wake up the mind) calamus used together, can enhance the effect of nourishing the heart to wake up the spirit. Longan meat should not be used indiscriminately, especially for those with dampness stagnation and stagnant drinking (water stays in the body). The use of medication must be directed by a doctor, please follow the doctor’s instructions to use medication, do not self-medication.