"What..." In that instant, Ao Liu's mouth went dry.
"Oh, this should be all I know about Hyperbolic Geometry—after all, I haven't studied this field very deeply. Most of what's written here was developed by our human race around seven hundred years ago. It comes up fairly often in certain cultivation methods, so I memorized it. Mm, I don't know much about newer things either." Wang Qi barely forced out a "kindly look" and said, "Take a careful look. I don't think the questions you want to ask me will go beyond this range. If you feel what's here can't solve your problem, then come ask me for the details..."
If Ao Liu had not been able to control every pore on his body, he would surely have been drenched in cold sweat already.
In truth, he could understand only the first seven lines of the first column. They included a "Fifth Postulate," a strange concave surface resembling a saddle, a figure made of curves, and several perpendicular diagrams.
He could still understand these most intuitive things written in the human language. But the farther down he went, the deeper the concepts became. He could not even guess at the function of the operators.
Perhaps anticipating this awkward predicament, Wang Qi had specifically written annotations beside them, explaining the use of every point of knowledge, with the words "the teacher's words" prominently marked.
"This... this..." Ao Liu found it horrifying. The question he had come up with himself was merely on the fifth line of the first column among the concepts Wang Qi had annotated. Back then, simply learning how to prove that "within ocean geometry, the sum of a triangle's interior angles is always less than half a full circle" had wrung him dry of heart and mind. Yet