There are lots of lakes, crisscross  network of gullies and abundance of water and grassshrimp and snail in Sha Hu Mian Yang area. A kind of aquatic plant named Mai Huang Jiao plant grows in this area which contains plenty of carotenoid, after the duck are fed with this natural aquatic plant, the eggs will have amino acid and many other microelement benefit to human beings, thus they have the medical and health care function, and meanwhile are a kind of natural green organic food. Jiu Zhu utilizes their own area advantage, elaborately processed with high-quality duck eggs from Sha Hu according to traditional technology and modern scientific processing technology. As for the preserved duck egg, the gradation of yolk is distinct, the egg white is elastic and the albumen has many microelements such as zinccalcium. It tastes cool and sweet-smelling and aftertaste is inexhaustible. As for the salted duck egg, the egg white is smooth like jade, the yolk likes red orange and the flavor is extraordinary. It is not only pleasing to the eye and the mind but also helpful to prevent from disease and keep healthy.