Let's start from the beginning. First of all, you must be confident in the interview and don't be too nervous.

first: punctuality, which is an iron discipline, is not explained. If I can't do this, I don't think I should go to the interview either. Generally, about 5 minutes in advance is appropriate.

second: dress and etiquette. It is better to wear clean and tidy clothes, and personal hygiene should also be done well. Then there is the question of politeness, knocking at the door to say hello, etc., and don't interrupt the interviewer during the interview, pay attention to listening, which is also a sign of politeness.

third, body language. For example, don't scratch your head during the interview, and keep calm.

Fourth, during the interview, you must think twice before answering the questions asked by the interviewer, and don't answer the questions with emotion. Before answering, you must think about the contents of the interviewer's exam.

Fifth, after the interview, don't show impatience, eagerness to leave or go to another appointment before the interviewer finishes the conversation. Trying to leave early will make the interviewer think that you are insincere or impatient. And so on

Fifth, related professional knowledge, as well as some eloquence skills, which are hardware facilities, it depends on you.