In Nanjing, banya shops can be found everywhere. Whether it is a meal on weekdays, or a banquet for the New Year, duck is an indispensable ingredient on the table of Nanjing people. In this duck capital, Zhangyun duck is a food business card with local characteristics, and its duck is the vane of Nanjing duck shop, representing the pure taste of Nanjing.

The store mainly sells sauced duck, roast duck and salted duck, in addition to four pieces of duck (i.e. duck wings, duck feet, duck gizzards, duck livers and other duck offal). Zhangji's roast duck is an authentic Nanjing roast duck, with red skin and white meat, the duck skin is slightly crispy, the duck meat is soft but not woody, the juice is rich, and the Peking duck with slightly chai meat and crispy skin has its own characteristics. The taste of roast duck is slightly light, and it is eaten with sweet and marinated, sweet and sour but not greasy. The salted duck is made by rubbing the duck meat and marinating the salt, the color and oil, the white is transparent and green, the meat is firm, the taste is salty and fragrant, it is a major characteristic food of Nanjing. Sauce duck is sauce marinated plate duck, duck meat is firm and not fatty, duck skin is crisp and slightly sweet, but also many old Nanjing's favorite.

Zhangyunban Duck Shop made its fortune in Pingshi Street, and later opened branches in Nengrenli, Madao Street, Shengzhou Road and other places, all of which are window stores and do not provide seats for diners to sit. The ducks are freshly baked, so it is recommended to eat them on the same day to ensure the taste of the food. The hotel also offers a vacuum-packed service to extend the serving time and make it easier for guests to take the duck as a souvenir.