Buffet, sometimes called buffet dinner, is an informal western-style banquet, which is widely used all over the world, especially in large-scale business activities. The specific way is that diners can choose their own food and drinks at will without preparing dinner, and then stand or sit down and dine freely with others or alone.

Buffet is called buffet mainly because it can arouse the subjective initiative of diners, who can help themselves and arrange and choose dishes within a given range. 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, which are processed by diners themselves.

Fast food restaurant, or fast food restaurant, refers to a restaurant that serves food quickly after ordering and keeps the service to a minimum. As for the guests, they may not get food soon. Usually, the food provided by these restaurants is called fast food or fast food.