That Yuan is a fictional character of the murderer. The teacher's son may be a real person. I was born prematurely during the spring outing, so I was deformed. The teacher's husband couldn't stand hanging himself. The deformed child was probably beaten to death by the teacher later. The whole story was fabricated by the murderer to the police. In fact, those victims are all rich classmates, and they are all people with status when they grow up.