Professor Xie slapped his thigh in astonishment and exclaimed, "My God, who has thought of proving it this way in the past eight hundred years? This is a genius! Oh no, he must be at least at the level of a mathematician!"
Xie Ran silently watched the pale, clean hands in the video, feeling a bit skeptical.
The hands of a mathematician?
Which mathematician isn't an elderly person with white hair? With such young hands, free of any wrinkles?
Professor Xie watched the video and wielded an old-fashioned fountain pen, writing along on a piece of scratch paper, murmuring excitedly, "So it is, it turns out to be this way..."
"A godlike figure, to think of proving it this way? Let's set A equals B..."
The grandson felt his grandfather might be going insane, he wouldn't respond to any calling.
