It's best to let recruiters pay attention to you first-it's important to remember this. If he pays attention to you, you can talk to him and ask him to mark your resume.
Because there are many people at the job fair, good companies will receive a lot of resumes, and they can't read them all.
If you make a deep impression at the job fair, you may get an interview.
Don't be too restrained when you go to the interview, be generous and have confidence. Usually when you enter the house, there are people in front of you, but you can treat them as "radishes". Don't be nervous, just wait until someone starts asking you questions, and you can answer them seriously. Don't worry, no one can ask you.
(The interview I mentioned above will only be of this scale in a fairly formal company. Generally, there are about two people in the company. )
The most important thing in an interview is to be natural.