Modern medicine and nutrition research have confirmed that dietary fiber can be called the "seventh nutrient" alongside the traditional six nutrients. Traditional fiber-rich foods include wheat bran, corn, brown rice, black rice, rhubarb rice, soybeans, oats, buckwheat, fungus, kelp, wild rice, konjac, sweet potato, celery, bitter melon, carrot, pumpkin, fruit, etc. Animal experiments show that vegetable fiber is more beneficial to the human body than grain fiber.