In terms of the taste of food, I don't know when there was a "civil war" in taste. It is said that whether a person likes sweet or salty food will determine his character and behavior, and the saying that "soft in the south and strong in the north" has found a basis. It seems that people have evolved from the debate on sweetness and saltiness to the "factional struggle" on the cultural differences between North and South. For example, zongzi is a must-eat food for the Dragon Boat Festival. Due to the different eating habits in different places, the North-South flavor has been formed. Most southern zongzi tastes salty, especially in Guangdong and Guangxi, and the materials are extremely rich. Egg yolk, chestnuts, all kinds of beans and pork are mixed together, but there are no egg yolk dumplings, sausage dumplings and shrimp dumplings. Fang is mainly sweet. People in the north eat zongzi with auxiliary materials such as red dates, candied dates and bean paste, so they usually eat candied dates, bean paste and red dates as sweets.