All sales industries are basically the same model. Grasp the customer's mind and adopt different methods for different customers. The most important thing, of course, is approachable. Facing different consumer groups, we should treat them equally. But we should recommend different kinds of goods to different groups. Then you will learn the art of language. You can't make people think you look down on him. Always be enthusiastic about your work and customers, and basically customers will be willing to communicate with you.