first appeared in Germany and was called "quickmeal" or "fastfood" in English. After it was introduced into China, the Chinese name was "fast food", that is, cooked meals that can be served at any time. In fact, what we usually call "fast food" should be called Chinese fast food, commonly known as box lunch. It is a way of eating that Chinese food absorbs foreign food culture. It has entered thousands of households with its bright, convenient and economical features. There was a kind of banquet called "Liban" in the Tang market, and this "Liban" was the fast food in the Tang Dynasty. According to Li Zhao's Supplement to National History, Tang Dezong summoned Wu Cuo temporarily, appointed him as "Jing Zhaoyin" and asked him to take up his post immediately. Before Wu took office, he invited relatives and friends to have dinner at home. Although time was tight, when the invited guests arrived, the banquet was already set on the table. Some guests were puzzled, and the people in Wu's house replied, "The two cities are very polite every day, so they can take it from the pot, so it is possible to set up a restaurant for three or five hundred people." In the Song Dynasty, in Tokyo, Hang Cheng and other places, there was a kind of catering called "calling by the hour" and "duh-ho-ho-ho" everywhere in the market, just like the so-called convenient fast food today.