"Technological civilization of the Pre-Solar Calendar Era..."
At this, his voice paused for a moment before dropping to a much lower register. "It far surpasses the present world. Mathematics is one of the fundamental conditions for technological development. A flourishing of technology means a flourishing of mathematics. Based on the data currently available, Fifth-Order mathematicians must have existed in the Pre-Solar Calendar Era, and perhaps even Sixth-Order ones."
Hearing what Qi Bei had to say, An Youyu's face paled slightly, her heartbeat accelerating sharply.
Chapter 248