Just now, I just cared about teasing Ling'er and didn't pay attention to it, this Chang'an Academy is indeed magnificent, the courtyard gate is majestic and atmospheric, and the four gilded characters of Chang'an Academy are even more shocking. There are two couplets on both sides of the gate:

Great responsibilities come from hard work, and may all monarchs take the world as their own responsibility;

Reward knowledge is created in Juheng, and the philosopher does not forget the conscience in nature.

Han Xiaofeng walked up the stairs and crossed the courtyard gate, feeling that he was back in school, and he spent his carefree and green years, as if he heard the sound of reading aloud. "You smell it, it smells like books." Han Xiaofeng said happily to Chen Ling'er.

Chen Linger covered her mouth and snickered, "No wonder you are so talented and learned, it turns out that you are also a person who loves to read." ”

Han Xiaofeng snickered in his heart, I love to read, that kind of book with color, but not your kind of book.

Chang'an Academy covers an extremely wide area, full of school buildings, of course, students can not be compared with modern universities, there are tens of thousands of people at every turn, and there are only about 1,000 people here.

The academy is built on the mountain, naturally it is shaded by green trees, and now it is not late autumn, the leaves are still there, and along the road, Chen Linger is a tour guide, introducing the surrounding buildings and scenery, and it is really a bit of a college love.

The two unconsciously came to the Weiyang Lake of the academy, the breeze blows the willows, the lake is wide and rippling, and the koi fish shuttle in it, which is really a good place to study. There are people around who recite poems and chant poems, some people raise pens to paint wonderful brushes, and some people spend the moon before you and me. There is only one person looking up at the sky, and his fingers are non-stop, like a fortune teller who can pinch and calculate. Han Xiaofeng was curious about what this person was doing, so he wanted to go over and take a look, Chen Ling'er was afraid that this person would not know what to do and cause trouble. Then he said, "You can't be reckless, there is a dragon and a crouching tiger here, don't offend people again." ”

Han Xiaofeng said, "I naturally know the measure, if others don't mess with me, why should I provoke others." ”

Chen Ling'er was also very curious, and she had often heard that there were some weirdos in the academy before, but today was the first time she had seen them. Han Xiaofeng only listened to the words in the mouth of this slender and plainly dressed student, and he didn't know what to say.

Li Chunfeng was doing mental arithmetic a difficult problem, and he couldn't find a way, so he stopped when he saw someone coming, and politely said, "This brother doesn't know what to teach." ”

Han Xiaofeng also responded politely, "In Xia Han Xiaofeng, if you are disturbed, please bear with me, but I am very curious to listen to the words in your mouth." ”

Li Chunfeng smiled kindly, and said, "Brother Han is fortunate to be here, in Xia Li Chunfeng, I have been troubled by a question for many days recently, and I am doing that mental arithmetic deduction, but I didn't expect it to arouse your curiosity, and I am ashamed to be ashamed." ”

Han Xiaofeng was excited, I rely on celebrities, Li Chunfeng is a famous astronomer, metaphysician and mathematician in the future, and the back picture is written by this guy and Yuan Tiangang.

Han Xiaofeng smiled on his face, stretched out his hand and held Li Chunfeng's hand tightly and said, "Brother Li is fortunate to be happy, I really have admired the name for a long time." ”

This not only made Li Chunfeng confused, but even Chen Linger was inexplicable. This is too abnormal, I don't even know the famous Chai Jun, do you know this unknown Li Chunfeng?

Li Chunfeng said embarrassedly, "Brother Han knew me before? When have you heard it in the next name. ”

Han Xiaofeng said, "Hey, I haven't heard of it before, but you are so diligent, in the future, everyone in the world will know your name." ”

Li Chunfeng said with a smile: "Brother Han really likes to joke, how easy is it for this poor disciple to become famous in the world, I am a student of mathematics, I can't write to settle the world, and I can't use martial arts to settle the world, how to make a name." ”

Han Xiaofeng thought about it, this is a comprehensive university with a complete range of categories, covering various disciplines, of course, the most valued is the cultural and martial arts, those agricultural arithmetic machinery are regarded as strange skills, it is difficult to get into the hall of elegance, no one wants to learn at all, this is the relationship between national conditions and the level of science and technology. There are not many students who learn this, and some of them are also poor students, just to have food and clothing, but the country's development and scientific and technological progress are inseparable from these.

Han Xiaofeng said with a smile, "Brother Li is too arrogant, this day is the best in the world, as long as you achieve the ultimate in a knowledge, the role should not be underestimated." Take the mathematics you have learned, for example, if you learn the depths, you can count astronomy for nine days to catch the moon, and you can count geography to catch turtles in the five oceans, which is the first encyclopedia in the world, whether it is marching or fighting a war or governing the country and the country. ”

Li Chunfeng's face stiffened, and he looked incredulous, thinking that you are a bit too awesome.

Han Xiaofeng thought to himself, I'm not bragging, is the moon landing considered a nine-day moonshot? Is the Jiaolong going down to the deep sea a turtle in the five oceans? It's all a math work, isn't it true, I'm not lying.

Han Xiaofeng looked at his expression of eating, he was very unhappy, you are also a celebrity in the future, why don't you have any confidence at all, you can't see the future if you don't give you some fierce medicine.

Han Xiaofeng asked, "Then let's talk about what topic you are bothered by, and see if I can give you some advice." ”

Hearing this, Li Chunfeng became interested, and said, "Recently, a prince from the Western Regions Dawan Kingdom gave a question like this, a farmer in their country invented a kind of chessboard with sixty-four squares and presented it to the king, and the king wanted to reward the farmer as soon as he was happy, but the farmer didn't want anything but grain, he asked for one grain of rice in the first grid, two grains of rice in the second grid, and four grains of rice in the third grid, each of which was twice as much as the previous one. At first, the king didn't think it was much, so he agreed, but he didn't know that there was more and more of it, and later he realized that he had been deceived when the grain in the treasury was not enough, but how many grains of rice had to be put in the country became a problem. ”

Han Xiaofeng snickered in his heart, it turned out that this question was from Dawan Kingdom, and he used to think that someone made it up. However, there were already international students in the Tang Dynasty, which was quite unexpected.

Han Xiaofeng said with a smile, "This question is actually quite simple, the key is to find a law, I think you have found the law, but you can't summarize it, do you say yes or no?" ”

When Li Chunfeng heard this, he suddenly came to his senses, as if he was crazy. said, "Brother Han is right, I don't know if Brother Han has any way to summarize this law." ”

This stumped Han Xiaofeng, but he knew that he was also a college student who graduated from a prestigious university. But how to explain this to him, this letter is estimated to have to be explained for a long time, not to mention what power number.

This is better than teaching people to fish, Han Xiaofeng suddenly thought of a way to get the best of both worlds, and said, "Brother Li, I have a lost mantra, as long as you can figure it out, you may be able to find out the rules." ”

Li Chunfeng was overjoyed when he heard this, and asked eagerly, "Brother Han, please speak, Chunfeng listens." '

Where does Han Xiaofeng have any long-lost formulas, that is, the multiplication formula table that even elementary school students know, and immediately said, "Then Brother Li is very good, one by one gets one, one two gets two... Ninety-nine-eighty-one".

Li Chunfeng was fascinated by what he heard, clapped his hands and laughed, "Wonderful, wonderful, the person who summed up this set of formulas is really a great talent." “

It can be seen that Li Chunfeng really likes mathematics, Han Xiaofeng said: "Brother Li has this mantra to help, I believe that he will be able to summarize the law soon, I have another problem here, Brother Li can also implement and summarize it in his spare time." “

Li Chunfeng smiled and said, "Brother Han, please speak." “

Han Xiaofeng said, "The same question, this farmer wants the next grid to be twice as many as the previous grid, and I am the next grid to have one more grain than the previous grid, I don't want an answer, as long as there is an equation, no matter how many grids there are, I can calculate the formula for how many grains there are." “

Although Li Chunfeng frowned, he could see joy on his face. Immediately arched his hand and said, "Thank you Brother Han for your generosity today, if there is a day in the future, I will repay this kindness." “

Han Xiaofeng said with a smile, "Brother Li is polite, I didn't teach you this mantra to repay your kindness, if you have the day when you will fly and meet the hydration dragon in the future, I only hope that you will benefit the people and the Tang Dynasty." “

Li Chunfeng's face was solemn, and he suddenly said, "Brother Han not only taught him generously what he had learned, but also had such a mind for the world, he was really a model for my generation, Chunfeng has been taught, please accept my gift." After speaking, Li Chunfeng bent down to Han Xiaofeng and made a disciple's salute.

Han Xiaofeng was so frightened that he hurriedly hugged Li Chunfeng and said, "Brother Li can't help it, I can't afford such a big gift" This is a figure who will be famous for centuries in the future, I don't dare to be his husband.

Li Chunfeng said, "The master is the teacher, why not." I don't know which college Brother Han is a student in, I often deduce mental arithmetic here, but I don't seem to have seen you before. “

Han Xiaofeng smiled embarrassedly and said, "I'm just a soju seller, so I'll accompany my friends to come in and have a look today." “

Li Chunfeng did not discriminate against Han Xiaofeng because he was a soju seller, but became more and more respectful. said, "Brother Han is really a master in the world, and he is hidden in the city. I don't know where Brother Han's family lives, so I'll come to the door to ask for advice. “

Of course, Han Xiaofeng warmly welcomed this kind of talented and virtuous person, and even told Chang'an's address.

Li Chunfeng got a new formula, and he was anxious to go back to the school, so he said, "Brother Han, today should have fulfilled the friendship of the landlord, but I am afraid that the formula will be forgotten, so I will take the first step, and I will definitely visit another day." ”

Han Xiaofeng is not the kind of person who is cautious, and said, "It's okay, you can go." ”

When Li Chunfeng walked away, Chen Ling'er asked, "Did you get that mantra just now by accident?" ”

Han Xiaofeng said with an innocent face, "Otherwise, do you think I can summarize it myself." ”

Chen Ling'er tilted her head and said, "Cut, who believes it." ”

Han Xiaofeng is also helpless, what kind of world is this, to be honest, no one believes it.