Buffet, also known as meal, sometimes also known as buffet dinner, is an informal western-style banquet internationally, especially in large-scale business activities. Its specific practice is that instead of preparing dinner, diners can choose their own food and drink at will, and then stand or sit down and eat freely with others or alone. Buffet is called buffet, mainly because it can arouse the subjective initiative of diners when eating, and they can help themselves and arrange and choose dishes within the established scope. As for it, it is also called a cold dinner party, mainly because the food it provides is mainly cold food. Of course, provide some hot dishes in moderation, or provide some semi-finished products to be processed by the diners themselves.