Xiushan native soil, eggs and native duck eggs and other green products, is the best source of nutritional supplies. Preserved egg flavor, can promote appetite, reducing lung heat, hangover, to cure diarrhea E. fire. It is often used to treat sore throat, pharynx, hoarseness, constipation, etc.. I have a mother of Xiushan County mainly preserved egg's Longchang preserved egg, preserved egg, preserved egg, to the old man.