Indeed, Li Dongsheng was right. You really can't tell anything just from a photograph.
However, the handsome man didn't see it that way, and he argued forcefully, "Principal Li, I saw it with my own eyes, this is just a photograph. Their actions completely crossed the boundaries of a teacher-student relationship."
Li Dongsheng thought to himself: This spoiled young man really doesn't understand the situation. Even though I made myself very clear, he still won't let the issue go. Besides, even if this matter truly did exceed the bounds of a teacher-student relationship, Li Dongsheng wouldn't dare to intervene.
Li Dongsheng said with a serious face, "Teacher Huang, we must always look for evidence. Without evidence, slandering one's colleagues is not a good thing."
The handsome man appeared somewhat irrational, perhaps thinking that losing to a student was a great embarrassment to him.