Code composed of numbers, letters. Catering number format is composed of numbers, letters of the code. In order to facilitate the management, the catering number will be developed into a hierarchical structure of the coding system, such as the first two that the regional number, the last two that the table number. Nongjiale, also known as leisure farming, is an emerging form of tourism and leisure, is a return to nature provided by farmers to the urban modern people so as to obtain the physical and mental relaxation, and enjoy the spirit of leisure tourism.