Chalk, Powdered Ice, and Powdered Regrets

Ning Que rarely visited the front courtyard since becoming a student of the Second floor of the Academy. It was awkward hanging out with his peers from the Academy back then. However, he was in a rush today to report about what had happened. Furthermore, it was late and the students at the front courtyard were still in class, so he did not take the secluded side doors but brought Sangsang to the meadows, across the stone tablet and through the main doors.

The rain had stopped and the weather was balmy. The sun shone down upon them as voices rang from the study room. There was a debate going on in the other study room. The Academy was filled with a peaceful classroom atmosphere.

An aged voice rang in Classroom Three. "The basis and the origins are the most crucial. If you cannot understand the straight line, how will you understand more complex three-dimensional pictures? What is a straight line? A straight line is a straight infinite line. I will draw it for you..."