In the early autumn, after the summer heat has not spread, combined with increased school stress, constant stress and possibly reduced appetite, some bitter and acidic food can be prepared, both to burn and to increase appetite. For example, mustard blues, bitter melons, tomatoes, or more vinegar when cooking. The luminous broth, which is used for children, is rich in iron, potassium, zinc and other trace elements. It also provides for stomach digestion, while the protein in the ribs supplements a dish that is particularly suitable for children during the school year. At the same time, the child ' s nutrition needs to be borne in mind. Natural bitter substances in food, such as citrus and grapefruit, tea polyphenol and chocolate polyphenol in tea, are all part of the prevention of cancer and heart disease. The fruits must therefore be accompanied by food, not just sweet, but also by bitter, acidic, stimulating ablaze, and generating new energy in anticipation of a new “operational flood”。