A platform somewhere in the mountains.

The sun is rising, the pine forests are green, and the small trees are budding.

The venue of the annual World Youth Mathematics Competition has arrived, and the rented venue is very large, and there is a "no traffic" outside the competition area on the inner level As a world competition, the organizer of the Republic is the favorite to win the championship, which is naturally very concerned, otherwise it will not be rented in the Summer Palace to do the venue, in addition to a large number of Chinese and foreign tourists and the relatives and friends of the contestants from various schools or school teachers, media reporters also came a lot, and a lot of small games about mathematics were also pulled up on the periphery of the competition area.

One by one the theme boards are placed in the forest, some are still hanging on the pine trees, hanging on the rockery, and many of the more difficult topics have small prizes, which are for tourists to participate.

For example, Sudoku.

For example, the nine-square grid.

For example, quick calculations and so on.

Zhang Ye and Lao Wu, who came up the mountain, saw that there was a reporter, and their hands were naturally separated.

A female tourist said, "It's so lively?"

"Mom, I'm going to play math games too!" said one kid.

An old man looked at the arena, "Lao Mei won the championship last time, right? ”

A young man said: "The champion is definitely ours!"

A lot of foreign tourists are also talking about it, but they don't understand what they say, and there are black people.

The crowd over there was too crowded, Zhang Ye and the others didn't go inside, but stopped on the small hillside where the outermost pine forest and the bamboo forest meet, and Wu Zeqing sent a text message to Xin Ya.

After a while, Wu Zeqing said: "It's here." ”

Zhang Ye searched, "Which one?"

Wu Zeqing took down his chin and pointed, "The one with black-rimmed glasses." ”

As soon as the words fell, Xin Ya, who was squeezed out there, also saw her, and beckoned with a smile, "Old Wu." ”

She is not tall, her appearance is ordinary, her hair is a little thin, she may respond to the old saying that a smart head does not grow hair, anyway, she is not particularly beautiful, but her temperament is still good, and her eyes are also very intelligent, which is not the same as the image of a mathematician in Zhang Ye's impression.

Far away, Wu Zeqing spoke to her, "Why didn't you go in?"

"There is a team leader inside, and Xiao Han from the Department of Mathematics of Peking University is here, the venue is too stuffy, so I will come out. Xinya said with a smile.

Wu Zeqing said: "Xiao Han?"

"Han Henian, I also posted on Weibo in the morning to woo you. Xinya said: "He is also among the teachers who led the team this time, and he is an observer. ”

Lao Wu used to be the vice president of Peking University, and Han Henian is a teacher in the Department of Mathematics of Peking University, although he has made some achievements in recent years, but he is just a new star in the domestic mathematics community. But Zhang Ye has already remembered this name, and he can't forget the name of every rival in love. He also chased my old Wu with a hidden-head poem? Hmph, moral corruption! Zhang Ye is naturally full of malice towards these rivals in love, and he is completely wrong with people!

The people squeezed left and right, and finally came closer.

Xin Ya stopped, and her extremely curious eyes fell on Zhang Ye, "Hey, I'm wearing too much, I can't see my face." ”

"Hello, Professor Xin. Zhang Ye's eyelids jumped and he stretched out his hand.

"How are you, young enough?" Xin Ya shook hands with him, then looked to the side with a smirk, "Tell me, what is the relationship between the two of you? When did it start?"

Wu Zeqing smiled, "Guess for yourself." ”

"How old is he?" said Xinyaqi.

Wu Zeqing said: "More than twenty." ”

Xin Ya said: "So young, Sister Wu, your old cow eats tender grass?"

Wu Zeqing smiled: "You, the dog can't spit out ivory in his mouth." ”

Xin Ya said: "I'm really curious, I've never seen you fall in love for so many years, I thought you had to be lonely for the rest of your life, this suddenly brought one, it really made me a little uncomfortable, and my face didn't show it, I have to let me see the real face." He glanced at Zhang Ye's face again.

"There are too many people, and there are journalists, so it's inconvenient. Wu Zeqing smiled: "I'll show you when there's no one." ”

Xin Ya wondered: "What's wrong with the crowds? You're not a big star, who pays attention to you, you're a single middle-aged and elderly woman, and you're still afraid of scandals?"

Zhang Ye rolled his eyes, who is a middle-aged and elderly woman?

Wu Zeqing shook his head and said with a smile: "You are only a year and a half younger than me, and you still say that me? Hehe, your mouth has never been soft since you were young." Then he looked at Zhang Ye, "You two are so hard-mouthed, you can compete one day." He said to Xin Ya again: "But, your mouth is probably not as good as Xiao Zhang." ”

Zhang Ye was silent and relatively quiet.

Xin Ya sighed, "What do you mean, let me listen? There are still people who dare to compare their mouths with me? Although I am engaged in mathematics, I have never lost in scolding, your friend looks at it, he is quite introverted, I really don't see that my mouth is powerful." "She's so strong, I'm really not convinced.

Zhang Ye smiled and spread his hands, "Lao Wu is blowing it to me." ”

How could Zhang Ye lose to her, for him, this mouth is a rice bowl, it is his business to eat, he is professional and professional. If he had changed before, changed in another place, or changed someone else, Zhang Ye would definitely have to break up, but today he is very modest and low-key.

Today's Zhang Ye is a gentleman, that is called a personable, that is called a cultured, Zhang Ye estimates that he has not been so positive since he was a child, no way, in front of Lao Wu, Zhang Ye is a dead and alive bastard, he always wants to show her the best side of himself, and change the image of being with others in front of him, he thinks this is true love, he has met so many people since he was born, sometimes he doesn't even listen to his parents, but only Lao Wu can hold him, as if Sun Wukong met the Buddha, as if the technology house met******。 Lao Wu is like a gentle sea, Zhang Ye has fallen into it now, and he can't get out no matter how he flutters.

Sinya asked, "What industry are you?"

Wu Zeqing said for him, "The teacher at my school." ”

"Also from Peking University?" Xin Ya said with interest: "What major?"

This time it was Zhang Ye who said, "Chinese Department." ”

Xin Ya smiled: "We are professional, but we are born nemesis." ”

The Department of Mathematics and the Department of Chinese are indeed a Tiannan and a Haibei, which is a little far away.

After chatting for a few words, Xin Ya suddenly found another thing, and stared at the mutton fat jade bracelet on Zhang Ye's wrist in surprise, "Ha? Old Wu, my sister Wu, did you give away all the bracelets that your father gave you more than ten years ago?

Wu Zeqing said helplessly: "Don't shout everywhere, just your loud voice." ”

"I'm amazed. Xin Ya said sourly: "I liked this bracelet at the beginning, when we were in college, how many times did I beg you for nothing, you didn't give it to me, I said I would borrow it and wear it for two days, you told me not to break it, okay, now I will send it?"

Wu Zeqing tightened his coat slightly and smiled, "It's just a small object, you, don't talk about it everywhere, keep it secret." ”

"I know, I don't understand that. Xinya asked again, "What kind of love gift did he give you?" Quickly, take it out and show it to me." ”

Wu Zeqing was about to say.

Zhang Ye knew that Lao Wu was going to give him back, but he felt that it was unnecessary, so he told the truth and said embarrassedly: "I haven't had time to send it yet, I'm thinking about what to send, can you give it a little bit?"

Xin Ya smiled: "Sister Wu, I like jade, jade, and the like, women, they all love this." ”

Wu Zeqing smiled and shook his head, "I don't like these now." ”

Xin Ya glanced at her disdainfully, "You don't come." ”

Zhang Ye understood in his heart that Lao Wu knew that he had no money now, so he deliberately said this, for fear that he would be under too much pressure, otherwise he would not have mentioned yì before and said that he only wanted a small handicraft, Lao Wu is the kind of classical beauty who is very considerate from the bottom of his bones, if it weren't for this, Zhang Ye would not have loved her so much. Celebrity calligraphy and painting?Lao Wu does like it, but this obviously can't be a love object, it's not that kind of thing, Xin Ya's words gave Zhang Ye a hint, jade, jade, or diamond? Well, you have to get one back for Lao Wu, people have given themselves the mutton fat jade that has been cherished for more than ten years, if Zhang Ye doesn't express it, it's not his style!

They chatted together.

At first, Zhang Ye and Xin Ya were not familiar with each other, and they didn't have much to say, but then they talked a lot, and they became talkative, and after a while, someone joined in.

A young woman walked up and said, "Hey, this is Principal Wu, right?"

Wu Zeqing took off his sunglasses, "Director Chen?"

Xin Ya also knew her, "Director Chen is also here?"

"Professor Xin, aren't you the deputy team leader?Why are you outside?" Another member of the Mathematics Association came over, "The competition is almost over, right?"

Xinya looked at her watch, "It should be soon." ”

The middle-aged man from the Mathematics Association: "Principal Wu is also here to help today?"

Wu Zeqing smiled, "I happened to pass by and caught up." ”

A mathematician in his thirties also walked up, wearing glasses, shaving his head, and dressed a little rigidly, he didn't even look at Wu Zeqing, a big beauty, and was talking to Xin Ya, "Professor Xin, I took my students to do a project, there is a function simplification problem, I have to ask you for advice when I go back." ”

Xin Ya smiled: "Cheng, wait for the game to be over." ”

As he spoke, he suddenly formed a small circle and chatted.

It is full of elites and professors in the domestic mathematics or education circles, Wu Zeqing may not know all of them, and they are not very familiar with it, but many of them obviously know Wu Zeqing, a well-known figure in the education industry, the vice president of the first university in China, the common people may not be familiar with it, but everyone in the circle knows it.

As the vice president of Peking University, at the scene of this kind of international competition, Wu Zeqing should be the highest-level group of people present, so it is naturally worth interviewing, so several TV stations or newspaper reporters and cameras came.

"Principal Wu. ”

"I'm from the Tsu City Newspaper. ”

"I'm from the Beijing Times, can I give me an interview?"

A group of people engaged in mathematical geometry were chatting about academic issues, and there were reporters indiscriminately, Zhang Ye naturally seemed a little redundant here, he couldn't interject, and he was not interested in interjecting, so Zhang Ye didn't say anything, walked away silently, and went to wander elsewhere by himself.

Wu Zeqing, who was being interviewed, glanced at Zhang Ye sideways, retracted his gaze, and continued to talk to the reporter officially: "For these motivated young 'little mathematicians', we have to ......"

A mathematician also noticed Zhang Ye, who had been standing beside Wu Zeqing just now, and asked Xin Ya, "Whose student is this person?"

Xin Ya didn't say much, "It's also a teacher, we met just now, and we chatted a few words." ”

The man wondered, "Haven't you seen him?"

"Teacher of the Chinese Department. Sinya added.

The man suddenly said, "Oh, I said I don't know you." ”

Then no one paid attention to Zhang Ye anymore, and no one thought that he came with Wu Zeqing.

……

Dozens of meters away.

Zhang Ye walked to the game answering area, and watched those tourists gather there in groups to calculate the problem, and felt very fun for a while.

"Ah, I got it right. ”

"Kid, that's smart. ”

"Are there any gifts?"

"Yes, I'll give you a bear. ”

Next to each board stood a number of young men and women, presumably college students from the mathematics department of the university, who had come here to volunteer.

Zhang Ye read it one by one, and at the end, he saw a more difficult question in the back, the gift of this question is a mobile phone, I have never heard of the brand, it should be a good mobile phone brand in the world, Zhang Ye thought that his mobile phone should also be renewed, but recently he was shy in his pocket, so he was ready to try his skills and walked up.

Later, Xin Ya followed, "Hehe, your surname?"

Zhang Ye turned around, "Don't be expensive, your surname is Zhang, and your bow is Changzhang." ”

Xin Ya looked at the question that Zhang Ye was looking at before, "What's the matter, and you're also interested in our mathematics?"

"It's okay. Zhang Ye said.

Xin Ya said: "This question is not simple. ”

This is a quick arithmetic problem, 43821 multiplied by 81257.

This kind of problem may be difficult for ordinary people, and you must use a calculator, but for people majoring in mathematics, it is still relatively easy, because there is a way to split it, and there is a formula, however, this kind of five-digit quick calculation, and it is a problem that is difficult to split this kind of number, even ordinary mathematicians need a certain amount of time to solve, and it is likely to have to do pen calculations.

The requirement for this question is mental arithmetic, and the question can be answered within half a minute.

Zhang Ye stood in front of the question board, and after reading it for a few seconds, he asked the female college student with the staff ID next to him, "Do you have a pen?"

"Give. The volunteer handed him a pen.

Zhang Ye raised his hand and wrote: 3560762997.

The volunteer was stunned.

Xin Ya in the back was also slightly stunned.

Zhang Ye asked, "Is that right?"

"Uh, yes. The female volunteer nodded.

Zhang Ye coughed and stretched out his hand, "Is the phone mine?"

The female volunteer shook her head, "No, those who use calculators don't count, they must do mental arithmetic." ”

Zhang Ye fainted: "I'm just mental arithmetic." ”

The female volunteer was also very axial, shaking her head again and again, "You have only watched for a few seconds, unless you are a top mathematician or mental arithmetic master in China, it is impossible to answer, you must have used your mobile phone to calculate it when you were far away before, and then wrote down the answer, this does not count." ”

Zhang Ye was dizzy again, "I really calculated it myself." ”

Xin Ya was also happy when she saw this, if she asked herself if she did this question for herself, she could not be faster than Zhang Ye without preparation, or even much slower than him, after all, her main attack was not in mental arithmetic, so naturally she knew that Zhang Ye was opportunistically using the calculator software in her mobile phone, "Okay Teacher Zhang, you are a teacher of the Chinese department, a great people's teacher, don't tease other little girls." ”

Your sister!

Who did I tease me! I'm serious! Khan, buddy, I haven't reasoned yet!

Over there, Wu Zeqing finished the interview and came over.

Some other professors and teachers in the field of mathematics also came up with them when they saw the situation here.

"What's wrong?" asked a member of the Mathematics Society.

"Yo, someone answered this question? I wanted to try it just now. A young mathematician wondered, "Who answered it?"

The female volunteer hurriedly pointed at Zhang Ye, and said with a sad face: "This gentleman took a few seconds to write the answer, I, I didn't give a gift, I think he calculated it with a calculator." "There are three mobile phones, and the prizes for the first three people to answer the question correctly are not much, so naturally they can't be given away blindly.

All the mathematicians looked at Zhang Ye.

The young mathematician said, "I can't figure it out in a few seconds, it's hard to split, and it's relatively computational." ”

These questions are actually from the organizers of their mathematics community, and everyone knows the difficulty of each question, and the prizes are also issued according to the difficulty.

When many Chinese and foreign tourists heard this, they also looked at Comrade Xiao Zhang with contempt.

Shame on you!

It's a shame for our republic!

This is an international competition, and there are so many mathematicians from all over the world present, so embarrassed to come up and receive the prize after holding the calculator?

One mother covered her child's eyes, "Don't look, don't learn from him in the future." ”

The little girl nodded earnestly, "I know, Mommy." ”

Zhang Ye: "......"

Xin Ya smiled diligently to help Zhang Ye round up, after all, it was her best friend's rumored boyfriend, she said, "Teacher Zhang is joking, right?"

Zhang Ye: "............"

Zhang Ye couldn't cry or laugh, I'm joking with your sister!

Of course, Zhang Ye calculated this problem by himself, he split it several times, tricked two formulas, and mentally calculated several superposition multiplications, so that he solved such a problem. As a result, now, I have answered the question with my strength, because the answer is too fast, which makes these people think that they are bragging--awesome?

I'll blow your sister!

My mobile phone!!The prizes are not much, so naturally I can't give them away.

All the mathematicians looked at Zhang Ye.

The young mathematician said, "I can't figure it out in a few seconds, it's hard to split, and it's relatively computational." ”

These questions are actually from the organizers of their mathematics community, and everyone knows the difficulty of each question, and the prizes are also issued according to the difficulty.

When many Chinese and foreign tourists heard this, they also looked at Comrade Xiao Zhang with contempt.

Shame on you!

It's a shame for our republic!

This is an international competition, and there are so many mathematicians from all over the world present, so embarrassed to come up and receive the prize after holding the calculator?

One mother covered her child's eyes, "Don't look, don't learn from him in the future." ”

The little girl nodded earnestly, "I know, Mommy." ”

Zhang Ye: "......"

Xin Ya smiled diligently to help Zhang Ye round up, after all, it was her best friend's rumored boyfriend, she said, "Teacher Zhang is joking, right?"

Zhang Ye: "............"

Zhang Ye couldn't cry or laugh, I'm joking with your sister!

Of course, Zhang Ye calculated this problem by himself, he split it several times, tricked two formulas, and mentally calculated several superposition multiplications, so that he solved such a problem. As a result, now, I have answered the question with my strength, because the answer is too fast, which makes these people think that they are bragging--awesome?

I'll blow your sister!

My phone!!