Furthermore, foods with low fat, high cellulose and high mineral content, such as fresh shepherd's purse, leek, celery, spinach, Toona sinensis, etc., all have the function of clearing away damp-heat in gastrointestinal tract. In addition, bean foods such as mung bean sprouts, soybean sprouts, black bean sprouts, broad bean sprouts and pea bean sprouts are of great benefit to dredging liver qi, strengthening spleen and stomach.