That was the signal for the end of the class.
"Mn, today's class will end here."
After Sun Mo spoke, loud sighs, grumbling, and sounds of astonishment could be heard.
"Why is this lesson so fast? Could the ending horn be played at the wrong time?"
"Teacher, why don't you speak for a little while more?"
"Yeah, we were listening to the most fascinating part. If we don't finish listening, how will we be able to sleep tonight?"
The students grumbled.
"I have to give the classroom up to the students of the next class."
Sun Mo shook his head, indicating that it was impossible to delay.
The lectures of a great teacher usually consisted of two lessons joined together which lasted a total of 50 minutes, with 10 minutes break time.
If it was in other classrooms where no other teachers were using them for their next lesson, Sun Mo didn't mind dragging the lecture a little longer. But this classroom was a lecture hall.
