"Before this time, her grades were mediocre, unremarkable, and even below average." The teacher pointed to a time node and carefully analyzed it. "However, after this, her grades suddenly advanced by leaps and bounds and made a qualitative leap..."

Other teachers nodded frequently.

"By the way, this time..." One of the teachers suddenly found out, "Isn't it the day when she transferred to another school?"

"When I was in the countryside, my grades were not good, but I instantly became excellent after I changed my school..."

Several teachers looked at each other.

"You said, did this Laura cheat?"

"I think it's quite possible."

"I don't think so. We have nothing...