First time I saw the teacher crying

This semester, another math teacher, she is very humorous, but some students do not like her teaching methods, saying that the teacher is fierce, not good, but also pour cold water, I hope she will be transferred earlier. There was a test, and everyone’s average score was very poor. She taught us awkwardly. What surprised people was that she cried...
At first, she was still normal, and her eyes were red. I thought that the teacher was so excited when he counted us, but the fact is not the case. Then, the voice of the teacher shivered, and soon she cried. She also pointed to the classmates before, and now there is no more. She only cares about tears and sucks her nose.
I was surprised because I have seen the teacher cry for the first time so far. I saw tears in my teacher's eyes, and my heart was not stirred up for a while. I don't overdo it, I don't dare to look at the teacher again. I feel so guilty. At the moment, I have two pictures in front of me, two "different" teachers: one is a teacher who is serious in class, who loves to tell jokes in class; one is a tearful flower, a teacher who is standing in front of us sad and angry... ... I am getting more and more sad, and there is an urge to cry with the teacher, but I hold back because I don't want to be surrounded by the strange eyes of my classmates.
The teacher is still talking. She said that she is very sad. The students don't welcome her. She thinks she is very serious and diligent. Why are the students still so bad? She is very sad... I heard that I suddenly thought of splashing her cold water. The classmates, they still look at the teacher with contemptuous eyes, I am angry at their behavior. The teachers have been forced into this by you, and they are not "hands-on", really.
Finally, this "cry drama" is over, many students are talking about it, some say that the teacher is pitiful; some actually say that she is pitiful; later, the class teacher also specifically mentioned this matter in class. I feel sad for the teacher, and those classmates shouldn’t have been like this to her.