Do I need to wear formal clothes to attend the job fair?

Generally speaking, you don't need to wear formal clothes to attend job fairs, unless it's a job fair organized by a few big companies! Generally, job fairs are a kind of publicity to let job seekers know about the company and jobs. Job seekers can understand the nature of the company and the job category by looking at the recruitment information!

You just need to find the job or company you are interested in, and then give your resume to the recruiter and ask some basic knowledge, that is, things you don't know very well after reading the information. If this job suits you, you can leave your resume and wait for the company to call you for an interview. You can wear something relatively suitable at this time.