"Thank you, Grandpa."
Qiao Yu took the book and the card, casually putting the card in his pocket, and began to look at the book carefully.
"The Beauty of Mathematics," an old book, yet well-preserved, with the old man's handwritten signature on the title page, looking quite stylish.
Qiao Yu solemnly placed the book into his bag.
"Let's go, I'll walk you downstairs to catch the car."
...
At Yanbei University, Beijing International Mathematics Research Center, Chen Zhuoyang was sitting in his office with a book spread out in front of him, but his mind was obviously not on the book. He kept looking up and peering out the window.
The spot where he sat had a clear view of the path leading to this building. He had chosen this setup initially to see if his mentor was coming over, but he hadn't expected to use it to look out for his junior brother today.
