The old yu chang bun is a traditional small-eat technology development, training in catering operations, and the promotion of alliances and chains. Old yu chang bao has long been engaged in the development and promotion of buns, focusing on the small and medium-sized wisdom of mastering the market orientation of chinese pasta and leading the food and catering industry. Changko yu is a highly successful and intelligent project of value and potential for development. As a special food of popular taste, the old yu chang has been known for millennia and has flourished. It is an economically viable mass food that enjoys a high reputation in the north, throughout the country and in many parts of the world. It is made of fine fresh pork, dozens of materials, made/preciseed with high soup, with the traditional chinese pasta fermentation combined with modern living fermentation techniques, flexible and flexible, white and radiant. The buns are made in the shape of an ass. Its flavour feature...