Boil a pot of hot water every morning, and put chrysanthemum, lily and medlar in the cup. These three ingredients are the best ingredients for regulating yin and yang, tonifying kidney and fixing essence in traditional medicine. Then pour boiling water into the cup, cover it with a quilt, and take a sip when you are thirsty. By soaking in hot water for a long time, the beneficial substances in Lycium barbarum and chrysanthemum lily will be dissolved. Because it is not eaten directly, Lycium barbarum does not have the slightly dry and spicy taste, and it can also avoid the high temperature when cooking porridge from destroying the nutritional elements in Lycium barbarum. The water at this time is both thirst-quenching and delicious. It would be better if you drink water before eating Lycium barbarum. This can not only absorb nutrients in water, but also absorb nutrients insoluble in water. So it is best to drink Lycium barbarum water.