Answer: The first basic principle is called "Six M Principles". It is a etiquette principle that is widely valued all over the world. "Six M" refers to expenses, interviews, menus, manners, music and environment. It means that when arranging or participating in catering activities, we must give priority to six aspects: cost, meeting, menu, manners, music and environment, and strive to make our actions in these aspects conform to the code of conduct of self-discipline and respect for others. The second basic principle is called "the principle of proper catering". In catering activities, no matter the scale of activities, the number of participants, the grade of meals, or the specific number of meals, we must do what we can.