Li Yan did the questions as fast as ever, and the test questions that Mr. Li collected through various channels that were said to be secret papers were like an ordinary and simple paper that could not be simpler than ever.

In less than an hour, Li Yan stopped writing, and when he answered the answer, there was still no suspense, it was all right.

In the past hour, Li Yan and Lin Yu were both bowing their heads and doing serious questions, both of them did not speak quietly, while Lu Lin, who was sitting in a position in the corner behind him, held the open textbook with both hands, the pages half blocked most of his face, and only showed a pair of narrow and deep eyes looking forward from time to time.

Since walking into the library and sitting down, Lu Lin has maintained this posture.

After finding that Li Yan stopped doing the question, Lu Lin's back leaned back, and his fingers held the book and moved it up again, only leaking a line of gaps.

Hiss –

The arm moved, and Lu Lin couldn't help but twist his eyebrows.

I hadn't paid attention to it before, but now that I came back to my senses, I realized that he had been holding the book for a long time, and his arms were a little sore at this time, and even his neck was a little numb.

Shielded by the erected textbook, Lu Lin lowered his head and moved slowly around his lower neck and shoulder blades.

While carefully rubbing the sore muscles of his arm, "cluck-", the sound of several fingers tapping on the table sounded, and someone stopped in front of Lu Lin's position.

This classmate ...... It seems that you have taken the book backwards. Looking up, a boy with silver-rimmed glasses looked at him and stopped talking, and finally whispered a reminder.

Lu Lin: "......"

A quick glance at the cover of the book, he realized that he had really taken it down.

Turning the textbook around quickly, Lu Lin said calmly: "Oh, thank you." ”

After the enthusiastic male classmate left, Lu Lin secretly poked out a pointed head and aimed at Li Yan, for fear that the movement just now would attract attention.

The light of his eyes floated over there, but fortunately, Li Yan didn't notice this, and Lu Lin breathed a sigh of relief in his heart.

After a pause, when Lu Lin looked up again, Li Yan's figure was missing from that position, and the position opposite Lin Yu was already empty.

？！

What about people?

Lu Lin was shocked, and his eyes subconsciously swept around.

After searching in the huge study room for a while, when Lu Lin glanced to the left front, his gaze stopped at a bookshelf.

After a pause, he walked around the back lightly.

Naturally, there is not just a study room, next to it is dozens of neat rows of bookshelves, which are filled with all kinds of books and classics that are easy to borrow.

After finishing the test paper just now, Lin Yu's side was not over yet, Li Yan didn't want to disturb her, so she simply got up and went to the bookshelf area here to find a few textbooks about mathematical theorems.

Over the years, the IMO competition has never only tested the content of the high school textbooks, and many of the topics in it can be said to be a bit out of the curriculum, and students need to expand and supplement their knowledge reserves in this area independently.

Li Yan shuttled between the full bookshelves, her clear eyes followed the rows of book titles, and her fingers swept all the way to the bottom of the books, and after a while, she stopped in one place.

The corners of the boy's lips were slightly raised, and his slender fingers slowly pulled out a detailed textbook on calculus sandwiched in the middle.

Stopping in place, Li Yan lowered his head slightly and opened the book in his hand to read, under the black hair, the white and slender swan neck bent out of a beautiful arc.