Notes on School in Mi Xiao Circle is a series of books published by Sichuan Children's Publishing House in 2112. The author is Beimao. The book tells the story of Mi Xiaojuan's happy and troubled life in primary school, just like the story in his diary. The characters in this article are all fictional, and there is no realistic prototype. The characters in this article are:

1. Mi Xiao Circle: the hero in the novel Mi Xiao Circle and Jiang Xiaoya School, a naughty and lovely pupil who likes playing football. With Jiang Xiaoya and Steel-toed, they are also called "the trio of good friends".

2. Xing Tie: When I was in kindergarten, I was very good friends with Xing Tie, and so was my primary school. Xing Tie was a pupil who was later transferred from other schools. He has a big head and can play a great role as a goalkeeper when playing football. Very greedy, so the members of the study and rescue group thought of the "food learning method", nicknamed "steel head"

3. Jiang Xiaoya: In the first grade of primary school, Jiang Xiaoya gave him a piece of chocolate, so he became a good friend. Because my father is the chairman of Daya Group, his family is relatively rich, so he was chosen to go abroad to experience a poor life.

4. He Wei: A transfer student in the third grade likes telling jokes, although his parents have divorced and his father died. He was Jiang Xiaoya's sworn enemy and later became friends.

5. Wang Congcong: Wang Congcong, who is known as a "child prodigy" and is only seven years old, has finished one grade of courses every month and never plays, so he is constantly advanced placement and taking exams. After Class Five, Wang Congcong began to find that campus life can be so colorful, and the taste of childhood is not just hard work.

6. Xu Doudou: Xu Doudou became the deskmate of Mi Xiaojuan when he ranked in the second grade. He was careless, laughing and laughing all day, and liked to sit at the same table with Mi Xiaojuan very much. When he left, he cried and cried, which was very bad.