Hunan and Jiangxi are a kind of bean products, which mainly contain water, protein, fat, a little cellulose, vitamins and minerals. After freezing, the quality will not change and no toxin will be produced. The temperature in the freezer is very low, so bacteria are not suitable for growth in the freezer. The dried aromatic dried fruits in the freezer can be preserved for a long time. And if it can only be eaten in the refrigerator for three days, it can also ensure the original taste of its food.