Play field is the classroomLi Ziheng Daping elementary school, Jingxia Hui Autonomous Region has 283 students. There are 8 classes, but there are only 6 classrooms. Therefore, They have to take turns in a long run. During the final exam week, however, it is required that all students come to school. As a result, two classes have to be run on play field. The classrooms are very small and very crowded. In less than 10 sq.meter area, there are more than 60 students. Soon, the situation will become worse: there is lock of 4 classrooms after 2 more classes being added.
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