The third class of 2018 from No. 2 Middle School in City A.
Zhang Xiaoling was sitting on the podium, immersed in writing test papers, and the electric fan above his head was blowing away the hot summer air. The class teacher is not in the classroom, and the class monitor is the class monitor as usual during evening self-study. There were cicadas outside the window, and coughing and the sound of turning pages could be heard from time to time in the classroom. Zhang Xiaoling finished solving the last big question in the test paper and closed the pen cap with a sigh of relief. He looked up at the students under the podium who were immersed in solving problems, and an idea suddenly came to his mind.
Time, please go slower, and slower again.
Concept: campus.