According to records, as early as the Spring and Autumn Period, millet was wrapped into horns by leaves of zinia latifolia, which was called "horny millet". Rice packed in bamboo tubes is sealed and baked, which is called "tube zongzi". At the end of the Eastern Han Dynasty, millet soaked in plant ash water. Because the water contains alkali, the millet is wrapped in leaves into a quadrilateral, and when cooked, it becomes Guangdong sour rice dumplings.
In Jin Dynasty, Zongzi was officially designated as Dragon Boat Festival food. At this time, in addition to glutinous rice, jiaozi also added Alpinia oxyphylla, and the boiled jiaozi was called "Yizhi jiaozi". According to the "Yueyang Local Records" written by Zhou people, "It is customary to wrap the millet with leaves, cook it and cook it thoroughly. From May 5 to the summer solstice, one is Zongzi and the other is Xiaomi. " During the Southern and Northern Dynasties, miscellaneous zongzi appeared. Rice is mixed with animal meat, chestnuts, red dates, red beans and so on. And there are more and more varieties. Zongzi is also used as a gift for communication.
In the Tang Dynasty, the rice used for zongzi was "white as jade", and its shape appeared conical and rhombic. There is a record of "Da Tang Zongzi" in Japanese literature. In the Song Dynasty, there was already a "candied jiaozi", that is, fruits entered jiaozi. The poet Su Dongpo has a poem "See Yangmei in Zongzi". At this time, there were also advertisements for building pavilions and wooden chariots and horses with zongzi, indicating that eating zongzi was very fashionable in the Song Dynasty. In the Yuan and Ming Dynasties, the wrapping material of zongzi changed from leaves to leaves. Later, zongzi wrapped in reed leaves appeared, and additional materials such as bean paste, pork, pine nuts, dates and walnuts appeared, and the varieties were more colorful.
To this day, at the beginning of May every year, people in China have to soak glutinous rice, wash zongzi leaves and wrap zongzi, with more varieties of colors. From the perspective of stuffing, there are many dates in the north, such as jiaozi; There are many kinds of fillings in the south, such as red bean paste, fresh meat, ham and egg yolk, among which Zhejiang Jiaxing Zongzi is the representative. The custom of eating zongzi has been popular in China for thousands of years and spread to South Korea, Japan and Southeast Asian countries.