In a restaurant without a menu, the way to order food is to directly tell the boss his favorite tastes and food. When ordering, the boss will tell him the truth when he asks the price, which is why there is no menu and price list, and a formal hand-torn invoice will be provided after checkout. Question 1: Is this operation mode legal? If not, which department, article and paragraph was violated? How to stand in the position of law. Question 2: If the guest knows the way to order in the restaurant, is it reasonable to ask the price boss to tell the truth when ordering, and refuse to pay for it on the grounds of high price or no menu after eating? If a guest complains, what will the relevant departments do?