International visitors learn the process of crushing a type of grass to extract juice for making green glutinous balls, or qing tuan, inside the courtyard of former residence of Sun Yefang. [Photo by Liu Sitong/China Daily]

International visitors learn about the process of making glutinous balls, including special green ones known as qing tuan, inside the courtyard of former residence of Sun Yefang. [Photo by Liu Sitong/China Daily]

A woman slices a cake known as jiao ta gao, for tasting. The cake is made from dough that is prepared by people stamping on it. This kind of cake has many flavors and the one pictured here includes walnuts and jujubes, also known as a Chinese date. [Photo by Liu Sitong/China Daily]