This Train of Thought...

Su Junyu wrote furiously.

As he wrote, his subjective consciousness seemed to peel away from the cold logic deep within his heart. As the pen tip moved across the paper, the temperature of his blood steadily rose. From his heart came joyous pounding. The power in his blood followed his heartbeat, racing through his entire body with the bloodstream.

This was...

This feeling...

So this was what they called "hot-blooded fervor"...

Su Junyu thought this to himself.

Some studied mathematics as though on an ascetic pilgrimage, struggling from youth until their hair turned white, every step filled with hardship and every step fought for, yet never feeling the slightest regret. Chen Youjia's father, Chen Jingyun, was one such person. Others spoke mathematics as they lived: mathematics had long since merged into their thoughts and their lives. Perhaps their path was not as arduous as that of the first kind of ascetic, but to deny them mathematics was equivalent to taking their lives. The Arithmetic Lord and the Hand of the Common People were both of this sort. Then there was yet another kind: those who simply found it interesting.

Su Junyu's attitude toward studying mathematics was closer to "playing." He studied whatever he found fun. Because he enjoyed playing cards, and card games involved probability, he had studied "probability" for a time—and his level had not been low, either.

And now, he simply felt that one of his little brothers had achieved something, so the field of "logic" had become very interesting.

Yet that very "interest" had driven him to produce such a result.

So-called "insight" truly was wondrous beyond words.

Endless halos spread and overlapped before his eyes.

That was his "framework"—every set that set theory permitted one to construct.

The number of these sets was infinity upon infinity.