The legend of Zongzi was passed down in memory of Qu Yuan who threw himself into the river, and it is the traditional food with the deepest cultural accumulation in the history of China. There are many kinds of zongzi. From the perspective of fillings, there are Beijing jujube zongzi wrapped with dates in the north. In the south, there are many kinds of fillings, such as bean paste, fresh meat, eight treasures, ham and egg yolk, among which Zhejiang Jiaxing Zongzi is the representative. The custom of eating zongzi has been practiced for thousands of years. Every year on the fifth day of the fifth lunar month, China people have to soak glutinous rice, wash zongzi leaves and wrap zongzi. In 212, zongzi was selected as one of the series of delicious foods in the second episode of the documentary China on the tip of the tongue.