Seeing the solemn yet slightly mysterious expression on Liu Shiguo's face, Ling Yun felt a flicker of curiosity rise within him.
He calmly walked over to the podium. "Teacher, why did you want to see me?"
Liu Shiguo did not answer immediately. Instead, he looked Ling Yun up and down, his eyes filled with scrutiny and a hint of excitement.
"Ling Yun, when I watched you explain that difficult physics problem just now, your train of thought was clear and your solution ingenious... Especially the third method. It seemed to involve the advanced application of the laws of energy conversion and conservation, which aren't taught until the second semester of senior year?"
He paused, then lowered his voice. "Tell me honestly, have you already finished studying all the physics knowledge from high school?"
"Oh, that? I had nothing better to do over the summer, so I flipped through all three years' worth of high school physics textbooks and taught myself a bit."
Ling Yun blinked. He had not expected Old Liu to have observed him so closely. He had no intention of hiding it, so he casually made up an excuse.
"You've finished all of it?"
Liu Shiguo's eyes instantly lit up, and his voice rose several pitches, making several students who had not gone far turn around curiously.
"How does it feel? Was it difficult to understand?"
"It was all right."
Ling Yun's tone was as casual as if he were talking about the pleasant weather.
"The concepts are organized pretty clearly, and the difficulty isn't that high. If I took the physics section of the college entrance exam now, getting a high score shouldn't be a problem."
"Good! Good! Good!"
Liu Shiguo excitedly said "good" three times in a row. The wrinkles on his face relaxed, making him