Yellow essence is a particularly good tonic that can flatten the three yin, tonify the lungs and spleen, and also tonify the kidneys and all three organs of the lungs, spleen and kidneys. It is tonic but not dry, and actually has a nourishing effect. The effect of yellow essence is more moderate, almost without too many side effects, so it can be used for a long time for the lungs, spleen and kidneys, to play a tonic role, can be taken for a long time, is often used a tonic medicine. In fact, the origin of yellow essence seems to be Anhui side, there is the production of yellow essence, these yellow essence after a few steaming a few sun, can be made into preserves, as a small snack to eat. So it is especially good for the human body, especially for patients with deficiencies in the lungs, spleen and kidneys, and deficiencies in qi, long-term consumption of yellow essence will play a very good tonic effect.