a dumb woman
As he was the one in charge of that class, he saw everything with his own eyes. However, even when he told everyone that something was weird no one believed him.
Song Yan's eyes narrowed as she looked at Professor He and asked, "What do you mean by weird? Can you tell me in detail?"
When Teacher He saw that it was the young woman who spoke, he hesitated a bit. But when he saw that Wu Jin and the rest of the officers did not stop her, he pursed his lips and then turned to look at Song Yan before saying, "Zeng Yang was a very cheerful girl. She would always listen to what was being taught in the class and I often saw her answering questions of the teachers. She was fine in the beginning but then suddenly she started complaining about a severe headache. Three days later her condition became worse and she started crying and screaming. But this is not the weird thing, the weird thing is that I found drops of blood next to her seat when she was taken to the infirmary."