I saw that the booklet was filled with weird symbols and patterns, as well as complex mathematical formulas like calculus, which I couldn't understand at all.

This guy likes to delve into such weird things all day long.

She flipped back again, and the only thing she could understand was that her name was written on a certain page.

The handwriting is neat and free, and the writing is very beautiful.

I hate it. Why did you write my name on it for no reason, and why do you have to write it so beautifully?

There is also a series of weird mathematical formulas under his name.

x(t)=a(2cost-cos2t)

y(t)=a(2sint-sin2t)

x2 y2 ax=a*sqrt(x2 y2) and x2 y2-ax=a*sqrt(x2 y2)

Is this a bit like a Cartesian coordinate system equation?

Ning Qingyun was a little curious and was about to think about it when she suddenly heard footsteps coming from outside. She was startled and hurriedly closed the booklet. It turned out that two boys were passing by the door while talking.

Ning Qingyun breathed a sigh of relief, but was no longer in the mood to explore. She put the booklet back into the file bag and stuffed it back into the bookshelf. Then she looked at what Qin Ke had put on the table. He should have stayed up late last night to prepare it for her.

Mathematical Olympiad exercises.

…

By the time the two of them walked down the boys' dormitory building again, it was already past six in the evening and the sky was completely dark.

Qin Ke ran to say hello to Sister Xu, the dormitory manager, before dragging Ning Qingyun out of the dormitory.

Ning Qingyun had kept her head down since she left Qin Ke's dormitory, not daring to raise it at all, for fear of being seen by someone she knew, and even more afraid of seeing Sister Xu's smiling and encouraging look.

Especially when Qin Ke put on the white scarf she gave her, she peeked through the reflection of the glass window. It looked like a couple's style with her white scarf, which made her even more embarrassed and couldn't raise her head.

She...she really didn't choose this style on purpose, it's just that she prefers white. Of course, she should give her favorite color as a gift, right?

Snowflakes started to fall outside at some point. Ning Qingyun still secretly observed whether there was anyone around. She relaxed when she saw that in the bustling campus in the past, there were no more people on this first day of winter vacation.

tone.

Just as he was about to raise his head, he suddenly felt his little hand tighten and was held by Qin Ke.

"You don't raise your head when you walk, so you're not afraid of being hit by a car in front of you? I don't know how you're still alive today!"

Qin Ke's tone was a little fierce. Just as Ning Qingyun was about to protest aggrievedly, Qin Ke pulled her to his side, opened the umbrella in his hand and blocked their heads.

"It's snowing. Come closer. It's just an umbrella. What if you get cold?"

Ning Qingyun struggled to break away, but she had no choice but to let him hold her.

She blushed and thought, anyway...this bad guy is always so carefree, so there is no need for her to be shy, right...right? And no one else will see it.

"Study Committee, is your grandma feeling better?"

"Well, I see that her complexion is much better today, but the doctor said that she will still be hospitalized for observation for a period of time, and she may not be discharged until two or three days before the Spring Festival."

"Then you're home alone tonight?"

"The nanny is here too, because I went home today, and grandma asked her to come back to help clean up the house, but she will go back to the hospital tomorrow to take care of grandma."

The school cafeteria stopped after lunch today, and the two chatted for a while. Qin Ke suggested nonchalantly:

"Study Committee, although it took some time, it's still early. How about we go to the bookstore to buy books and have dinner together. I'll treat you as a thank you for taking care of me all afternoon. Don't refuse,

Don’t say AA either, otherwise you just don’t treat me as a good friend!”

I... I never admitted that you are my good friend... You are a bad guy who makes decisions without permission all day long!

Ning Qingyun muttered in her heart, but did not object aloud.

This feeling that everything has been arranged by someone and you just need to relax and follow along is a bit unfamiliar to a girl like her who has been independent and strong since she was a child and relies on herself for everything, but it is also extremely comfortable and relaxed.

But when her eyes fell on the hands held by the two of them, she felt a little shy and guilty for no reason. She always felt that it was too much like a date for a boy and a girl to hold hands and go shopping and eat together... especially the two of them.

Scarves are still for couples...

No, no, I didn’t fall in early...puppy love!

Me...him and I are just good friends.

Ning Qingyun bit her red lips and immediately forgot that she had just denied Qin Ke's status as a "good friend" in her heart.

After leaving the school gate and getting on the bus, Qin Ke chose an empty double seat, naturally pulled the girl to sit next to him, and then let go of her hand.

But when he got out of the car, Qin Ke continued to hold her little hand as a matter of course and walked into the bookstore.

Noticing that the girl had been looking around secretly with a guilty conscience, for fear of being discovered by students from the same school, and her little fingers were tensed and bent nervously, Qin Ke smiled slightly, forget it, don't chase her too fast, it's good to be willing to hold hands now.

So he let go of Ning Qingyun's hand: "Study Committee, do you have any books you want to buy? If not, let's go to the textbook area to look for Mathematical Olympiad books together."

Ning Qingyun is indeed worried about being seen. After all, bookstores are the easiest place to meet classmates. Although she has a "clear conscience", there are so many things that make her heart beat faster, holding hands with boys and visiting bookstores together.

We can't let other students see the ambiguity in it.

Especially since she and Qin Ke are both so well-known in the school, if someone sees this scene, it will probably spread throughout the school in less than two days.

Seeing Qin Ke take the initiative to let go of his hand, she breathed a sigh of relief: "I...all listen to you."

Qin Ke just chose Olympiad books for show. He flipped through them casually and chose the two thickest ones. He then went to the university textbook section and selected several textbooks on probability theory, geometry, and advanced algebra.

Ning Qingyun was surprised: "Isn't this a university textbook? You bought it..."

"Let's buy it and take a look. High school mathematics is too simple and boring. In fact, I have already learned calculus roughly." Qin Ke also bought it to deceive others. His college mathematics knowledge cannot be revealed out of thin air.

It makes sense that there are a few such textbooks out there.

"Arrogant." Ning Qingyun thought of the "Calculus" textbook on the bookshelf of Qin Ke's dormitory that was full of unfamiliar mathematical symbols. She was not convinced, but she was even more impressed in her heart. This guy is really good at mathematics.

of genius.

After buying books and badminton rackets, Qin Ke chose a quiet Western restaurant and had dinner with Ning Qingyun. The reason for choosing a Western restaurant was very good, it was quiet, and he didn't have to worry about meeting classmates.

Ning Qingyun liked the dinner environment and the taste of the food very much. It was clean, elegant and elegant, but... seeing couples all around, she always felt that the atmosphere was particularly ambiguous.

However, Qin Ke still looked carefree, just as transparent as other couples, and he didn't realize how rare it was to eat out alone with Ning Qingyun. It was a precious opportunity that made all the boys in the school jealous, and he actually kept looking through the newly bought ones.

I read the book with great interest, and Ning Qingyun didn't know whether to be angry or amused.

However, thanks to Qin Ke's free and easy attitude, Ning Qingyun also relaxed later and finished their first date dinner with Qin Ke, talking and laughing.

"Qin Ke, where are we going to study tomorrow?"

"I'll take you there tomorrow morning, and you'll know."

"Mysterious."

"There is a slight deviation in the plan, otherwise I would have taken you there tonight. Apart from that, it is snowing outside and you don't have an umbrella, so I will take you home. You shouldn't be afraid that I know your home address."

"But... you have to take a long way back to school, which takes almost an hour."

"Stop talking nonsense and let's go. The hell-style special training will continue tomorrow. You should go to bed early tonight."

"Hey hey..."

Ning Qingyun looked at her little hand held tightly by Qin Ke, bit her red lips, and followed him quickly.

…

Just as Qin Ke was taking the bus to send Ning Qingjun home, the national competition question setting team in the Beijing Olympic Competition Center, which had been busy for a day, was still having a heated debate.

The question-writing team for this national Mathematical Olympiad competition has brought together nearly a hundred experts, scholars, and senior well-known university professors from all over the country. It can be said that there are a lot of authorities and big shots.

In such a high-end meeting, even the voice of Deng Hongguo, the first-level coach of the Xia Guo Mathematics Olympiad national training team and the deputy coach of the Xia Guo Mathematics Olympiad national team, can easily be drowned out.

However, at this time, Deng Hongguo's face was red with anger and he refused to give in and confronted Yue Wendao, the leader of the question group.

"I have no objection to the difficulty level of this national competition being moved closer to IMO. I also agree with the reform and changes such as increasing the number of questions and types of questions. But why is it that these latest reform plans have been basically finalized and have not been announced to the provincial organizing committee below?"

?Why is the latest version of the practice question bank only open to members of the training team and specific strong provinces in the Mathematical Olympiad! What time is it now! The national competition is only about twenty days away!"

Yue Wendao is just under fifty this year, but he has a gorgeous resume. Not to mention his experience of studying for a PhD in a top foreign science and engineering school, and joining the International Mathematical Olympiad (IMO) marking team, he only serves as the vice president of the National Mathematical Olympiad Organizing Committee.

, and the title of special external consultant to the national training team, which is prominent enough.

He took a sip of tea slowly and then replied leisurely: "Coach Deng, you don't have to worry, every reform must have a pilot. After the pilot is improved, the final plan can be finalized and then made public to the lower level. Otherwise, it will be one day at a time."
Chapter completed!