It is necessary to dress formally and let people feel your interest in futures. The most important thing is to make the interviewer feel that you are suitable for this job. For example, if you want to do marketing, you should start with your personality. For example, you say that you are warm and cheerful, easy to get in touch with strangers, simple and honest, and easy to gain the trust of others. If you want to be backstage, you should also talk about your personality. For example, you say that you are practical, cautious, studious and alert. In short, you must express yourself from the aspect of personality, and let him feel that this job is very suitable for you, and it will be ok.