1. For example, the elderly usually like cold and fear heat, dry mouth, irritability, soreness of waist and knees, and Huang Chi urine color. They should choose American ginseng, honey, tremella, crab, soft-shelled turtle and so on. 2. If the elderly are usually thin, tired and weak, people who are not tired of qi deficiency and easy to sweat can choose ginseng, astragalus, atractylodes macrocephala, yam and so on. 3. If the elderly are short of breath, lazy, listless, afraid of cold, pale and so on. People who always have yang deficiency can choose velvet antler, red ginseng, donkey-hide gelatin, walnuts, longan meat, clams and so on.