Reminiscing about the Good Times (10)

"I hated studying maths in school. It was difficult as hell," said Qiao Anhao, unable to help feeling regret whilst looking at the formulas she had no clue about now whatsoever. She then suddenly thought about something little that had happened in school, and she couldn't help but excitedly share it with Lu Jinnian. "Speaking of maths, I remember a magical thing that happened to me."

Lu Jinnian placed a single hand elegantly on the window sill, and turned his head to ask her, "What?"

"It was during the first half of the second year of high school. Didn't Class One and Class Three have the same teacher for maths? You should know, that teacher had a special thing. After every other month, he liked to set a test. I may not have understood everything in maths, but at least I knew most of it... All besides the parabola. It gave me a headache just looking at it.