Dietary customs in the Tang Dynasty developed and changed through a system of upper-level dietary etiquette in which the lower classes were influenced by the eating habits of the upper classes.

1. ***The rapid development of the same eating habits

The emergence of high tables and big chairs provided an opportunity for the transformation of the food system from the food system to the food system. In the middle of the Tang Dynasty, the food system replaced the dietary system as the dominant way of eating. People began to sit around a table and eat together. However, there were still some subtle differences between the collective food of this period and the collective food we now enjoy with our bodily fluids***. People sat around a table and the main food was still one portion per person. Only cakes, porridge, soups and other soupy foods were placed in a large container for each person to take for themselves.

2.? ***Causes of the Formation of Food Habits

In the process of reforming the way of eating, the food-seat-bearing utensils played a vital role, and the reform of the content of the food and the food utensils began almost simultaneously, in opposite directions. More precisely, the food sat, the table changed first, and then called the emergence of new food way.

3. Strengthening the upper level of the dietary etiquette system

The dietary etiquette system was initially established to show the status of the ruler and maintain the rule, which was mainly reflected in the Tang Dynasty before. Rulers forced people to observe this ritual through decrees. In the Tang Dynasty, food etiquette still existed in the banquets of the upper class and was respected by the upper class. At the same time, the food etiquette of the upper class was gradually simplified and moved downward, absorbed and accepted by the people, and gradually formed a food etiquette and custom. In the Tang Dynasty, formal state banquets were still dominated by the food system. The rules of banquet etiquette remained relatively strict. The placement of the table and the food distributed to the ministers were strictly regulated, reflecting the strict hierarchy.

4.? The eating habits of the lower classes were influenced by those of the upper classes

While food etiquette was praised and emphasized in the upper classes, such etiquette also spread rapidly in civil society. In the process of constant friction and mutual selection, the etiquette of the upper class and the customs of the lower class permeate each other, and eventually form the dietary etiquette and customs established by the whole society. For example, in folk banquets, people would give up their seats to each other out of courtesy and before the banquet started. Boys and girls would arrange their seats in an orderly manner. Tang Dynasty period, door-to-door diet, eating habits from the family to the community, people in the dietary activities, consciously comply with dietary customs, and the upper class mandatory etiquette are different, which is the result of social accumulation over a long period of time, is the people in the usual enlightenment of the habits of spontaneous cultivation, is a kind of active behavior.