Xinjiang paper walnut. Xinjiang paper-wrapped walnuts have high nutritional value, and are rich in protein, fat, minerals and vitamins, and compared with other walnuts, their shells are thin and easy to peel. Sichuan old tree walnut is relatively small in size and thick in shell, so it is hard, and it is not easy to peel, and there are few nutrients, only protein, fat, minerals and no vitamins. Therefore, Xinjiang paper walnut is bigger, thinner and more nutritious than Sichuan old walnut.