Although Tian Yanzhen wouldn't really take credit for himself verbally, he was undoubtedly very happy inside.
After all, if enough people talk about this kind of thing, it might really end up in textbooks a century later. When people discuss the Geometric Langlands Conjecture, they might also mention that Qiao Yu's mentor once said, "Seek constancy within change, find simplicity within complexity."
Once a person reaches a certain age and status, what they seek is nothing but fame in life and after death.
With a disciple like this, what more could one ask for? The old heart is greatly comforted!
"Hehe." Qiao Yu laughed awkwardly twice.
Having already flattered enough earlier, there was no need to emphasize it again now.
Of course, Qiao Yu didn't even think he was flattering his mentor; strictly speaking, he was just stating a fact. He just slightly edited it by omitting his Senior Brother Chen, who acted as a bridge, from the story.
