Zongzi has a very long history. It was originally used as a sacrificial food. Zongzi is used as a sacrifice, not a sacrifice to the original Qu Yuan. Zongzi was originally used to worship ancestors and gods. In the Eastern Jin Dynasty, Fan commented on "Temple System" and said: "Recommend corn in midsummer." It shows that there was a custom of offering sacrifices to ancestors and gods at the summer solstice. Horn millet, that is, horn-shaped zongzi. The so-called' horn' means that the highest sacrifice in ancient times was cattle, and the shape of zongzi represented the horn; Millet' is a kind of yellow sticky rice. Corn' made of grain stands for' Yang'; The' Zizania latifolia' (zongye) used by corn millet is' Yin', which is a combination of yin and yang, meaning to exorcise evil spirits and pray for peace.