One way for full-time graduate students to attend classes is full-time. The study time of this class is arranged on working days, that is, all day from Monday to Friday, and weekends and holidays are closed. It's impossible to attend class like this, but you can devote yourself to your study.
2. On-the-job training courses are mostly taught in weekend classes, and students can study at teaching points on Saturday and Sunday. Specifically, which Saturday and Sunday to study is arranged by the enrollment unit. Generally, it is a weekend every other week, and some colleges and universities use a Saturday and Sunday to attend classes every month.