Go back to the past and be a schoolboy

Chapter 266 I Have a Mathematical Poem
Beijing, Central Park.

Because of the victory of the First World War, the Forty-Nine City had already had a few days off to celebrate as stipulated, but the education sector felt that it was not enough, so they simply let all schools in Beijing have another three-day holiday to hold a larger-scale celebration of the victory of the Allied Powers.

And here is where the teachers and students of Peking University hold lectures every afternoon, and the speakers include students and teachers.

"Hey, I'm still writing and drawing. Didn't you say that you can go out with me for a stroll? I haven't seen you in the blink of an eye and I'm secretly busy with work."

Under the shade of the tree, it wasn't long before Cheng Nuo took out the paper and pen, and before he listed a few formulas, he was caught by Wen Yin.

Scratching his forehead with the tip of the pen, Cheng Nuo said a little embarrassedly: "Oh, I didn't just watch you go to the bathroom, I was idle and I was idle, so I wanted to improve the air compressor last time. Don't say, I just came out with you to relax this time, and I just got inspiration."

"Really? Let me see..." Wen Yin frowned lightly, bent over from behind the bench and poked her neck slowly. She was a little interested at first, but when she saw that there were symbols she couldn't understand, she couldn't bear it. I couldn't help muttering in a low voice: "That's how it was on the first date, I like mathematics so much, I might as well get by with mathematics in the future."

Cheng Nuo didn't hear clearly, so he raised his neck and asked, "Wen Yin, I didn't hear what you just said clearly."

"Let me tell you, you care more about mathematics than me." Wen Yinxiu tapped Cheng Nuo's forehead and wiped off the handwriting left by the tip of the pen just now: "You don't care about yourself even more. Are people at ease?"

As she said that, Wen Yin stretched out her other hand from behind, holding two candied haws: "Here, someone sold candied haws just now. I think our students from Peking University bought a lot of them. Although I have never eaten theirs, But I think it should taste right."

Now Cheng Nuo really didn't know what to say. He never thought that in two lifetimes, the first time he dated the opposite sex, it would be the other person who bought things for him. Although he is an emotional idiot, he also knew that in some situations, he should take the initiative a little.

Seeing that Cheng Nuo hadn't responded yet, Wen Yin thought that the other party had other thoughts, so she waved in front of her eyes again: "Zhi Yuan, what are you thinking, I bought everything for you, you can't waste food, you should Could it be that you don’t like eating candied haws?”

Seeing this, Cheng Nuo felt bad, so he hurried to pick up the candied haws.

But sometimes the more anxious people are, the more troubles will happen.

In his haste, what Cheng Nuo grabbed was not the candied haws, but the other girl's hand.

Suddenly, both of their faces turned red.

At this time, Cheng Nuo finally realized the importance of having a thick skin. He gritted his teeth and decided to make the mistake. He continued to stroke upwards, grabbed the candied haws and said, "Thank you for the candied haws. I didn't do it on purpose just now. I'm really sorry."

Wen Yin opened her mouth, just about to say something, but unexpectedly a student from Peking University came over.

After seeing Cheng Nuo and Wen Yin, some students wanted to take the initiative to say hello, but they were dragged away by their fast-acting companions.

At the beginning, the student was a little puzzled, but after his companion whispered in his ear, he suddenly realized, with all kinds of excitement on his face, as if he had discovered some great event, and winked in various ways.

From the corner of her eyes, Wen Yin saw the whole process in her eyes, and all kinds of thoughts, such as nervousness, uneasiness, and joy, rushed out of her heart, and she felt her face was so hot that she could fry eggs.

Although Cheng Nuo was also a little embarrassed, he still took the initiative to stand up, stand between the other party and the students, and bowed to those students.

After those students saw it, they immediately put away the smiles on their faces, turned to bow seriously, and then turned and left.

After confirming that those students had left, Cheng Nuo said, "Wen Yin, those students have left."

"En." Wen Yin hummed lightly.

In this way, the two looked at each other without saying a word, and continued to wander aimlessly in the park.

While walking, Wen Yin suddenly asked: "Zhiyuan, what do you mean by love?"

Cheng Nuo was stunned, couldn't help but glanced at the other side's face, and then quickly retracted: "Not long after Zhuo Wenjun and Sima Xiangru got married, Sima Xiangru went to Chang'an to become an official, and he didn't return for five years. Zhuo Wenjun Miss her very much, one day, she suddenly received a letter from her husband, Wen Yin, guess what was written in it?"

"Let me think about it..." Wen Yin bit her lips lightly, and said hesitantly, "The love story between the two of them is so classic, it must be the man's longing for the woman, right?"

Cheng Nuo chuckled, and muttered: "Actually, the content of the letter is very simple. It's just a poem, which says 'one, two, three, four, five, six, seven, eight, nine, ten, one million, one million'. Guess what it means? "

Wen Yin repeated the poem a few times, a little uncertainly: "Seven appears twice, and seven has the same pronunciation as wife, obviously Sima Xiangru intends to stop his wife and remarry?"

As he spoke, he gave Cheng Nuo a meaningful look.

The situation was not good, Cheng Nuo hurriedly stopped his small thoughts, held up the candied haws and said, "You are right, you have exactly the same idea as Zhuo Wenjun, and then Zhuo Wenjun directly wrote another letter, which said—— After the farewell, the two places are hanging each other, and they are talking about March and April, but who knows five or six years..."

Cheng Nuo basically didn't take a breath, so he read Zhuo Wenjun's poem. The numbers went from one to ten thousand and then ten thousand to one.

Take one breath? Cheng Nuo was almost suffocated with a few blows.

Listening to this poem, Wen Yin's eyes flickered: "Then how did Sima Xiangru behave after receiving the letter?"

"Of course Sima Xiangru felt ashamed the more he thought about it after reading it, and took Zhuo Wenjun to Chang'an in a four-horse cart." Cheng Nuo took a deep breath and continued, "The love I thought was of course a very complicated equation. .”

Wen Yin half understood: "What do you mean?"

Seeing the leaves falling on Wen Yin's head, Cheng Nuo took the initiative to remove them: "There may be no solution in the range of rational numbers, but there is a solution in the range of real numbers, or there is no solution in the range of real numbers, but there is a solution in the range of imaginary numbers." It is possible to find the answer, and some of the solution process is still very complicated, requiring careful verification and repeated research to obtain a satisfactory answer.”

Originally, Wen Yin was sweetened by this heart-warming gesture, but after hearing Cheng Nuo's explanation, she couldn't help but turn dark: "In the final analysis, your study of mathematics is a little deeper."

Cheng Nuo played with the leaves in his hand, thinking that the other party was still praising him, and continued: "I can only say that I know a little more about mathematics than ordinary people. In the final analysis, happy love is also simple in essence. Yes, you love me, I love you, it's that simple, so symmetrical, so beautiful..."

Just as Cheng Nuo was still talking at length, he suddenly found Wen Yin looking up at him with a half-smile.

With a groan in his heart, he quickly threw away the leaf in his hand, with an honest look, as if he wasn't the one who talked about love just now and had a lot of insights into love.

Looking at the other party, Wen Yin was suddenly laughed, even she didn't know why she laughed.

Cheng Nuo thought that the other party was no longer angry, so he immediately apologized.

"You, is the leaf dirty? Just blow it off, why are you still holding it?" Wen Yin shook her head, then turned around and walked forward slowly: "Actually, I'm not good at mathematics either. Nothing."

Cheng Nuo asked in surprise, "For example?"

Wen Yin gently opened her lips: "For example, I think love is a vector. When the direction is fixed and the length of the modulus is not zero, any translation will not change. That is unwavering love; when the vector is a zero vector, there is no When the foundation is solid, the direction of love is arbitrary, it is a love that is watery and flowery, and it is not worthy of praise."

Just as Cheng Nuo expressed emotion and was about to applaud the other party, he suddenly found that his hands were sticky.

It turned out that because of not eating for a long time, the sugar on the candied haws melted a little, and it flowed down the wooden stick to my hands.

"Okay, that's the end of the math topic between us, grab it and eat it, or it will all melt in your hands after a while." Wen Yin offered to hand over a handkerchief for Cheng Nuo to put on it.

Looking at the handkerchief, Cheng Nuo was slightly surprised.

And this time, Wen Yin also caught him, and said cheerfully: "How about it, it's still the previous one, it seems that I am more diligent and thrifty in managing the house?"

Taking the handkerchief, Cheng Nuo couldn't help lowering his head and covering his face, but the laughter couldn't be stopped, it sounded like a pig squawking.

Is there a confession? In fact, it doesn't count. From acquaintance to love between two people, it is almost a matter of course.

True love mostly goes in both directions, just like Cheng Nuo and Wen Yin.

They didn't say how many vows they made each other, but most of them were trivial and ordinary life. They thought about each other more, everything was in silence, and it was impossible to say when the two officially confirmed their relationship. They only knew that they had each other's place in their hearts.

"Hey, Zhiyuan, why do you think my candied haws are sour?" Wen Yin asked with some doubts while holding a half bunch of candied haws.

"Really? Let me take a look." Cheng Nuo curiously took the half bunch of candied haws, looked left and right, and finally said with his own gestures: "These two look the same, why did you come to this place?" Is it sour?"

"If you don't believe me, then you can try it." Wen Yin blinked her long eyelashes and encouraged her.

Cheng Nuo hesitated for a moment, then took a bite, which was really strange. The remaining half bunch of candied haws was not only not sour, but also sweet.

Suddenly realizing what was going on, Cheng Nuo instantly turned his gaze to Wen Yin: "This is... sweet."

Wen Yin immediately smiled like a flower on her face: "Of course, the candied haws I picked are sour. You usually have a big appetite and eat so much more than me, so we don't have to share the food equally. It's all yours..."

For a moment, without even thinking about it, Cheng Nuo hugged Wen Yin in his arms: "You are so stupid."

Wen Yin just broke free a little symbolically, and then muttered: "In public, you know how to play hooligans..."

However, Cheng Nuo also knew that it was not a private place right now, some actions were limited, and the two separated without much tenderness.

"Zhiyuan, will you focus on mathematics in the future?" Wen Yin asked with some concern.

It's already November, and the weather is already relatively cold. Cheng Nuo held Wen Yin's hand with both hands, warming his little hands: "If you want to win a glimmer of hope for the future national industry, you can only do mathematics first." Let it go."

Wen Yin was puzzled and said, "Why? You are so talented in mathematics, and your future achievements will definitely not stop there. There are so many people working in national industries, is there really such an urgency?"

Gently rubbing his little hands, Cheng Nuo said, "If we don't want to be Japan's industrial vassals, we must take the road of independence as soon as possible, otherwise it will be hard to recover in the future, and it will be very difficult to recover."

In the early years of the Republic of China, China's new iron ore industry developed rapidly, but this was not due to the need for more iron ore consumption by the domestic iron and steel industry, but more because of the demand for iron ore in neighboring Japan.

Even after World War I, the world's demand for steel plummeted, and even the Hanyeping Company, which consumed the most iron ore in China, stopped steelmaking and ironmaking one after another, but the total output of iron ore enterprises did not significantly increase. The decline is still maintained at the level of 100 million tons per year.

The reason is that China's iron ore production has been incorporated into the Japanese steel production system and has become a vassal of the Japanese steel industry.The result of this dependence is very dangerous, making China's steel production completely controlled by others.

When we come to the anti-Japanese battlefield in the future, it can be said that the shells hit on our heads are likely to be pig iron resources from our country, how cruel it is.

In all fairness, if it is purely for business, iron ore and pig iron can be used as commodities in international trade, but the problem is that the relationship between buyers and sellers is too unequal and cannot be adjusted simultaneously and to the same extent as steel market price fluctuations.

For example, in the last year of World War I, the price of pig iron in Japan was 8 times that of before the war, an increase of 357 yen, but the average price of our iron ore sales only increased by 19 yen, which is obviously extremely unreasonable. The impact of the depreciation of the yen is basically nothing to talk about profit.

"How difficult is it to find an independent path?" Wen Yin muttered to herself, "No wonder you are focusing more on industry now. Compared with mathematics, national industry needs your help more, but iron and steel Are we the only ones who see the disadvantages of development?"

Cheng Nuo shook his head with a wry smile: "Of course not, it's just that when a person is dying of thirst in the desert, and a cup of slow poison suddenly appears in front of him, what would you choose to do?"

Wen Yin replied: "If you don't drink, you will die immediately, if you drink, you will die slowly, so it is no wonder that everyone chooses this path."

Cheng Nuo said with a smile: "So, what we have to do is to provide more channels for national industries to create more demands. With these demands, everyone will have more choices and their development will be diversified."

Wen Yin nodded: "You can do it at ease, I will always support you in the future, but I have one request."

Cheng Nuo asked curiously, "What request?"

Wen Yin shook the powder fist in her hand: "That means you can't write math poems for me!"

Cheng Nuo laughed loudly after hearing this, and pampered the other party's little hand: "Of course not, but I have an equation for you."

"what?"

"ρ=a(1-sinθ)"

Afterwards, no matter how much Wen Yin asked, Cheng Nuo refused to decipher it, and it happened that Mr. Hu's arrival turned this little episode over.

(End of this chapter)