Nanjing is famous for its duck dishes, so it has always been called "Duck Capital". There are many duck dishes and many people eat duck, which is the best in the country. According to Chen Shu, Chen Jun and the Northern Qi Army were fighting in Zhoushan area outside the northern suburb of Jinling. Chen Jun's "everyone wraps rice, duck rice cooks" and "duck rice cooks" greatly inspired his morale, and finally he won by winning more with less. This is the earliest record of Jinling duck gizzard in the official history. At the latest in the early Ming dynasty, the southern salted duck has enjoyed a high reputation and has always enjoyed a high reputation. There was a folk song in the Ming Dynasty: "Ancient Academy, Glass Carving, Dark Forging, Salted Duck". The ancient academy refers to imperial academy, the largest national university at that time. Coloured glaze refers to Dahe Choi, which was called the miracle of the world at that time, and dark forging refers to the famous Nanjing specialty black brocade forging, in which the little salted duck is actually stuck. People in Nanjing eat ducks in various ways. During the Six Dynasties, several kinds of duck dishes such as roast duck and salted duck were already on the emperor's table, and Zhu Yuanzhang, the Ming emperor, "eclipsed a roast duck". Chen, a local chronicler of Nanjing in Qing Dynasty, wrote in Jinling Notes: "Ducks are not produced in Jinling, but are taken between Gaoyou and Nanjing. There are thousands of chicks crossing the river in the south, and the pond is full of livestock. It can be eaten in about 10 days. ..... and they are not as light and purposeful as' salted duck', fat but not thick. "