In short, it is called the teacher's three-foot platform, so the width is about one meter to one meter two. The area of the classroom platform is generally about 4.5 square meters. Generally speaking, the classroom platform is 4.5m long, 1 m wide and18cm high.

The classroom consists of a big house with a podium in front and seats in the back. There is a blackboard on the wall near the podium, which is the place where teachers have classes and assign homework. Behind is the student seat. Generally, there are four groups, with eight to nine tables in each group and two students in each table. It is the only place for students to accept knowledge and hone their will.