The rice cake has a history of more than 2,000 years, and it is well-known in Southeast Asia, Europe and America. There is also an allusion in it. During the Spring and Autumn Period, He Lv, the king of Wu, ordered Wu Zixu to build "He Lv City". After it was completed, a grand banquet was held to celebrate. Only Wu Zixu was unhappy. He expected that the prince of Wu was arrogant and did not guard against Gou Jian and Fan Li, the king of Yue, and the country would die sooner or later. After returning to camp, he secretly told his entourage, "After my death, if the country is in trouble and the people are hungry, they can dig three feet under Xiangmen (one of the six main gates in Suzhou) to get food." As expected, Wu Zixu was later framed and killed, and Wu was wiped out by the Vietnamese army. At this time, the capital was out of food and hungry everywhere. The followers led the people to Xiangmen to tear down the city and dig the ground, only to find that the original brick of Xiangmen was not made of clay, but made of glutinous rice ground into powder. Since then, in order to commemorate and remember Wu Zixu's achievements and loyalty, people eat rice cakes on the Spring Festival. During the Spring Festival, many areas in China pay attention to eating rice cakes. New Year's cakes, also known as "New Year's cakes", are homophonic with "high every year", meaning that people's work and life are improved year by year. As a kind of food, rice cakes have a long history in China. 1974, archaeologists discovered rice seeds in the Hemudu matriarchal social site in Yuyao, Zhejiang Province, which shows that our ancestors began to grow rice as early as 7,000 years ago. People in the Han Dynasty called rice cakes "rice cakes", "bait" and "glutinous rice cakes". The ancients also had a development process from rice cake to rice cake. In the 6th century AD, the cookbook Shiji contained the method of making rice cakes "white cocoon candy", which said, "If rice is cooked and cooked, and it is hotter than Chu Jiu's, it must be cooked extremely well, so as not to have rice grains ..." That is, after the glutinous rice is steamed, it is boiled into rice, and then cut into peach pit sizes. The method of milling rice into cakes is also very early. This can be proved by Qi Min Yao Shu written by Jia Sixie in the Northern Wei Dynasty. The production method is that glutinous rice flour is sieved with silk, and then added with water and honey to form a hard dough, and dates and chestnuts are attached to the dough, and then wrapped with bamboo leaves and steamed. This kind of glutinous rice cake has the characteristics of the Central Plains. Rice cakes are mostly made of glutinous rice flour, and glutinous rice is a specialty of Jiangnan. In the north, there are sticky grains like glutinous rice, and sticky millet (commonly known as millet) was first introduced in ancient times. This kind of millet hulled powder, after steamed with water, is yellow, sticky and sweet, and it is a delicious food for people in the Yellow River valley to celebrate the harvest. The article "A Brief Introduction to the Scenery of the Imperial Capital" published during the Chongzhen period of the Ming Dynasty recorded that Beijingers at that time would "eat millet cakes on New Year's Day of the first month and celebrate the New Year's cakes". It is not difficult to see that "New Year's cake" is a homonym of "sticky cake" in the north. There are many kinds of rice cakes, such as white rice cakes from the north, yellow rice cakes from farmers in Saibei, Shuimo rice cakes from water towns in the south of the Yangtze River, and red turtle cakes from Taiwan Province. Rice cakes have different flavors from north to south. There are two kinds of steamed and fried rice cakes in the north, both of which are sweet; In addition to steaming and frying, southern rice cakes are also fried in slices and boiled in soup, which are both sweet and salty. It is said that the earliest rice cakes were used for worshipping gods and ancestors at the New Year's Eve, and later became food for the Spring Festival. The rice cake is not only a kind of holiday food, but also brings people new hope with the passing of the year. As a poem in the late Qing Dynasty said, "People's hearts are high, and food is made in harmony, so that the year is better than the year, so as to pray for the year."