Jian dui is the name for sesame seed ball pastry. The hollow of the pastry is filled with a filling usually consisting of lotus paste, or alternatively sweet black bean paste, or less commonly red bean paste. The origins of jian dui can be traced back to the Tang dynasty as a palace food in Chang'an, known as lüdui (碌堆). This food item was also recalled in a poem by the Tang poet Wang Fanzhi. With the southward migration of many peoples from central China, the jian dui was brought along and hence became part of southern Chinese cuisine.