On the relationship between blood circulation and viscera.

A: The normal operation of blood is closely related to the heart, liver, lung and spleen. The heart governs the blood vessels, and when the heart is full of qi, the heartbeat is normal, which can effectively promote the circulation of blood in the veins, thus giving play to the nourishing role of blood. The liver controls the ventilator, with smooth qi and blood and smooth and orderly operation; The liver governs the storage of blood, which can adjust the distribution ratio of blood in the whole body and prevent bleeding. When the lung is facing a hundred pulses, the lung announces the descent, so that the blood gathers in the lung, and then the gas is exchanged in the lung and transmitted to the whole body. If the lungs are full of qi, it can help the heart circulate blood. Spleen can produce and control blood. Spleen is the source of qi and blood biochemistry. Spleen can control blood circulation in veins and prevent blood overflow. Spleen with sufficient spleen can promote blood circulation and remove blood stasis, so that blood can flow all over the body along the meridians.