When Chitose returned to her room, she placed the notebook she had used to record the timeline on her desk.

Take out a book of English summer homework and math summer homework from the drawer.

Chitose flipped a few pages casually, feeling that she could fall asleep directly all night when she wrote this kind of topic.

But since she had already agreed, she still went to the living room with her homework book.

In front of Bai Jingmo and Ye Yi was a blank test paper, and at the top of the test paper was a line of big characters: International Olympiad Mathematics.

Chitose glanced at it slightly, the question was indeed a little more difficult than her 'summer homework', but it was still easy for her.

"The professor said that the difficulty of this year's internship in a key high school is about the same as that of this International Olympiad." Ye Yi rubbed his hair with the tip of the pen: "I think it's still a little difficult, but it shouldn't be difficult for Jing Mo." ”

"It's fine." Bai Jingmo didn't look up, but directly picked up the pen on the table and began to write the test paper.

Ye Yi seemed to be used to Bai Jingmo's way of talking, and he didn't care.

But Chitose is not used to it at all, and always feels that by Bai Jingmo's side, even if he doesn't turn on the air conditioner, he feels cold.

Chitose opened the summer vacation homework book for math, and while casually writing the answers, she began to think about how to help Mo Shuyuan heal her heart.

Probably because she stayed on a certain math problem, Ye Yi looked at her and wrote on the scratch paper as she spoke: "Actually, this problem is very simple, you only need to know how to calculate functions." ”

Ye Yu's voice pulled Chitose back from his thoughts.

"Well, thank you." She thanked her, didn't finish the process of Ye Yi's writing, and wrote the answer directly in the homework book.

Ye Yi frowned slightly, feeling a little uncomfortable.

Even if Bai Jingmo is cold to her, their little sister is also cold to her.

"Actually, if you don't know how to write, you don't have to think about where you are." Ye Yi smiled softly: "I can teach you." ”

Chitose frowned, a little annoyed.

In the next second, she turned her head to look at a few blank spaces on Ye Yi's test paper, and smiled: "Aren't you also unable to write these things?" ”

"How difficult is my paper......"

As everyone knows, before Ye Yi finished speaking, Chitose picked up the pen in his hand and wrote the answer in several empty places for her.

even gave the answer to her last big question without a little thought.

And Bai Jingmo has only just reached half of this question.

Ye Yi was stunned, his face was a little unpleasant, and he defended: "Jing Mo, your sister's eyesight is so good, you can see the answer to your test paper from so far away." You see, I've come to tell me that. ”

"It's not." Bai Jingmo's cool voice sounded slowly: "I haven't written the answer to the last question yet." ”

"But...... But that doesn't prove that your sister's answer is correct. ”

Ye Yi knew that it was very bad for her to say this, but she couldn't control her emotions.

Bai Jingmo quickly calculated the last question on the scratch paper, and thirty seconds later, the answer he wrote on the paper was exactly the same as the answer that Chitose gave to Ye Yu.

"That's right." Bai Jingmo squinted slightly, looking at Chitose in front of him with a slightly heavy gaze.

The moment she shook her head, it just collided with his deep ink-like eyes.

It's a surprise, it's an exploration, it's a ...... Complex and deep emotions.

Ye Yi still wanted to say something, but a sentence seemed to be stuck in his throat, and he said it for a long time.

Because she knew that no matter how much she said, it would be a weak defense.

Sometimes, it's really hard to admit that others are good......