How is the duration of the teachers' congress divided? What does this mean?

The term of teachers' congress is a concept of time, which refers to the term of office of representatives. If a three-year term is specified, the next representative will be elected after the expiration of the three-year term. The number of meetings of teachers' congress refers to the number of meetings held during each term. During the term of the teachers' congress, there are usually many meetings. For example, the term of office of the first teachers' congress is three years, the first session is one session, the second session is one session, and so on. After three years of transition, the conference will be held once in the second session and twice in the second session.