Song He walked to the lectern and watched from the side as the papers were graded.
Xiong Maoxun and Ye Li did not leave either. They silently watched from the side.
Yu Anbang's red pen swiftly swept across the paper. The earlier short-answer questions were all marked correct, a pleasing sight.
When he reached the first major question, the tip of his red pen hesitated. He crossed out 80 percent of the solution and awarded only the two points for the opening step.
The second major question was completely correct, while the third was left blank.
"72 points." Yu Anbang sighed regretfully. "That's a passing grade."
"Teacher, I think I got the first major question right." Song He calmly defended himself.
"The correct answer is 87.667. Your first method used an advanced Tolkien Faction solution, and it was originally correct, but you crossed it out!" Yu Anbang said helplessly. "The second method you kept produced 87.687. Although the result was so close that it looked like a minor error, it was wrong. Did you come up with this method yourself?"
"No." Song He shook his head. "The second method was the You Deyi School's solution."
Yu Anbang froze, unable to react for a moment.
Xiong Maoxun and Ye Li had been preparing to leave, but they stopped in surprise when they heard that.
"Using the traditional Tolkien Faction method, it was easy to obtain 87.667." Song He spoke seriously. "But when I tried solving it with the You Deyi School's theory, I found that the value was 87.687."
"You learned the You Deyi School?" Yu Anbang asked with an expression as if he had seen a ghost.
"I've learned a small portion of it, about one-fifth." Song He asked, "Do you want me to explain the approach to this problem?