I went to the law firm for an internship in the summer vacation, and there was nothing to do. Internship became self-study. What should I do?

Don't resent being assigned a job that doesn't belong to you. We go to the law firm to learn work experience, and we should only feel anxious when there is no job, so even if someone else's job finds us, we should finish it efficiently and with high quality. Get on well with lawyers. Others will ignore you, because they don't see your specialty, and because they are unfamiliar with you, sometimes they are embarrassed to call you when they are familiar with you. After getting familiar with it, you will find that lawyers are still very kind.