Tangyuan, also known as "Tangtuan" and "Floating Zi Yuan", is one of the representatives of Han traditional snacks [1]. At the same time, it is also the most distinctive food in the traditional Lantern Festival in China, and it also expresses the yearning and expectation of the ancient people for a happy life.

According to legend, Tangyuan originated in the Song Dynasty. At that time, a novel food appeared in Mingzhou (now Ningbo City, Zhejiang Province), which was made of black sesame seeds and pork suet, with a little sugar added, and kneaded with glutinous rice flour outside. After cooking, the taste is sweet and soft, with endless aftertaste. At the same time, glutinous rice balls symbolize family reunion, and eating glutinous rice balls also means family happiness and reunion in the New Year, so it is a must-have food for the Lantern Festival on the fifteenth day of the first month. On the fifteenth day of the first month, Lantern Festival is our traditional festival with a long history. There are many folk celebrations, such as eating Yuanxiao in the north, enjoying lanterns and dancing dragons and lions. It varies from place to place.

Yuanxiao was also called "floating Zi Yuan" in ancient times, and merchants also called it "Yuanbao". Yuanxiao is rolled in the north and glutinous rice balls are wrapped in the south. In fact, these are two foods with different practices and tastes.