Self-help jiaozi store. The self-help dumpling shop has relatively low opening cost, simple production method, easy training and wide audience. It can directly join large brand stores and has many repeat customers. Buffet, also known as dinner and sometimes buffet dinner, is an informal western-style banquet internationally, 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.