If you try other aspects, Li Yi can see that Su Fat Man is deeply hidden, and he is afraid that he will be really timid, but now it is a mathematical art, and Su Fat Man is so aggressive, where is Li Yi willing to retreat half a point, resist his shoulders and say:

"There is something difficult for the seniors to solve, although it is!"

Zhu Weiyan was easily broken by Li Yi to solve the problem of "Li Bai drinking", and when he faced Li Yi again, he felt powerless, and saw that Su Fat Man bluntly said that he was not Li Yi's opponent, so he had to smile bitterly and salute the Su Fat Man: "The little girl is here to cheer for her seniors." ”

Jun Buqi is also a brother and an elder, almost seeing Zhu Weiyan grow up, Zhu Weiyan's appearance makes Jun Buqi feel very distressed, and secretly says that Senior Sister Zhu thinks very highly of herself, and always thinks that women don't let her eyebrows, but today she has lost the upper hand in poetry, piano, calligraphy, and mathematics four times in a row, and this blow is too heavy.

Jun Buqi walked over and asked softly with concern, "Senior sister?"

Zhu Weiyan shook his head, signaling that he was not in the way, and looked at the field intently, waiting for the competition between Su Fatzi and Li Yi.

Jun Buqi looked at Zhu Weiyan's gaze, it was the Li Yi who was born out of thin air, and today with Meng Pei to make Yuelu Academy disgraced, Li Yi's clothes are fluttering, his beard is flying, and he has a gentle and elegant style of reading poetry and books, but he has the unique proud vitality of young people.

With such a character, Senior Sister Zhu is not unjustly lost! Jun Buqi turned his head to look at Zhu Weiyan, but saw that Zhu Weiyan did not have a trace of depression in his eyes, but with an appreciation.

Jun Buqi's vigilance reminded him of a sentence Zhu Weiyan had said when he was in Yuelu Academy before, when everyone was practicing the Tao together, Jun Buqi couldn't help but be a little worried, secretly clenched the sword in his hand, and said in his heart: You can't let Li Yi continue to be in the limelight.

..................

Su Fatzi stepped on the steps of heaven and earth, and his chubby body was as light as a flying swallow, making a "pop" sound of the abacus, as straight as all living beings, and he mastered it alone.

Where is the shopkeeper of the previous Hengshan Inn philistine?

Li Yi was extremely surprised in his heart, knowing that after the fortune teller Zou Banxian in Shaozhou City and the pianist Jiang Wanyu of Fangcai, he had met a hidden master who was watching the shopkeeper Su Fatzi. Li Yi secretly recalled the strange men and strange things that his master Guo Bushou had told him on Yunshan, but after all, there was still no one who was in line with him.

Forget it, if you can't figure it out, you don't want to, anyway, today is just a math competition, and it's not a life-and-death fight.

Li Yi stood for a long time, and was dangled by Su Fatzi at this time, feeling a little tired, so he took a bench and sat down.

Li Yi's actions, he didn't think of it yet, but in the hearts of others, there was an uproar, and even that day Xuanzi and Huikong stood up and watched at this moment. The two of them understand that Su Fatzi is fine, and Li Yi can still take it calmly under Su Fatzi's position, is he confident, or does he not know at all?

Su Fatzi's face changed greatly, and his own heaven and earth Liuhe shrouded the southeast, northwest, and northwest of heaven and earth, which was natural and invulnerable, but Li Yi sat in the middle, and when he landed, he had the effect of resisting the enemy outside the country.

A "middle" is the indescribable pain of this faction for thousands of years!

..................

Su Fatzi shouted, shook the abacus, and said, "There is a lender with a thousand dollars today, and the monthly interest is thirty." Today, there is a lender of 750 yuan, and he will return it in nine days, and he will ask what is the interest?"

Hmph, it's just a score question, and this kind of fourth-grade grade level question wants to stump me? Li Yi frowned, pinched his fingers and counted for a while, and said categorically: "Six and seven five (6.75 words)."

Not long after Li Yi's voice fell, Zhu Weiyan exclaimed, it turned out that she had also calculated it, and the answer was the same as Li Yi's.

Su Fatzi didn't think about this topic to be able to stump Li Yi, so he only continued to ask: "The rooster is worth five dollars, the hen is worth three dollars, and the three chickens are worth one dollar.

This topic is a little more difficult, it is a binary equation, plus a reasoning question, and there is more than one set of answers, Li Yi has no ability to use his mouth to calculate anymore, so he found a powder stone, listed an equation table on the ground, and calculated it by "brushing".

When Zhu Weiyan was still confused, Li Yi had already thrown the powder stone, clapped his hands, stared at Su Fatzi and said: "There are four groups of answers, roosters, hens, and chicks are (zero, twenty-five, seventy-five), (four, eighteen, seventy-eight), (eight, eleven, eighty-one), (twelve, four, eighty-four), right?"

"So fast, how can it be so fast?" Su Fatzi listened to the few numbers reported by Li Yi, and looked at Li Yi incredulously and muttered to himself.

Su Fatzi suddenly thought that his two topics were recorded in the secret book of the master, if Li Yi's identity was really as he thought, he must have read the secret book, how could he not know these topics?

Well, I'll come up with a question to confirm this kid's identity.

..................

Su Fatzi's eyes were slight, his face was expressionless, and he said: "I don't know how many things are today, two of the three or three are left, three of the five or five are left, and two of the seven or seven are left." Ask the minimum geometry of things?"

In the history of Kyushu digital arts, there is a very famous proposition, that is, "Han Xin points the soldier question", from a famous allusion, that is, "Han Xin points the soldiers, the more the merrier", according to legend, Han Xin in the early Han Dynasty three heroes when the marshal ordered the soldiers, never need the soldiers to report the number, only need the soldiers to queue in front of him in turn: first a row of three people, then a row of five people, and then a row of seven people, Han Xin can know the number of soldiers, so that the surrounding people are puzzled.

It is said that this question originally had a name called "Dayan Qiu Yishu", which was first recorded in the book "Guiguzi", but the origin of this question is not important, the important thing is that this question has been thoroughly studied in later generations, Li Yi didn't even need to calculate, and replied with his mouth: "Twenty-three." ”

How did Su Fatzi expect the unbelievable story that happened to Li Yi, seeing that Li Yi was so proficient in "Han Xin's Soldier Question", Su Fatzi had no doubt about Li Yi's identity, Su Fatzi snorted coldly, and secretly said that now that the "opponent" came to challenge in the morning, he had to think about the countermeasures.

However, Li Yi's comparison on the ground is unheard of, is it possible that the "opponent" has cultivated to this point?

Su Fatzi was unwilling, and threw out a question that he realized in the Hengshan Inn: "The rooms of our store, if each room is forty-four yuan, the guests are twenty, if the price of each room is reduced by one dollar, there are five more guests, and our store has a total of fifty guest rooms, if you want to make a profit of 1,600 yuan, how much should the price of each room be reduced?"

..................

As soon as Su Fatzi's question came out, Zhu Weiyan thought for a while, and knew that this problem had not been solved by himself, so he sighed directly, put away the calculation plan in his hand, and stared at Li Yi with a pair of beautiful eyes, wanting to see how Li Yi answered.

Li Yi's face also changed greatly, but it was not because of the difficulty of this topic, but because Su Fatzi's topic subverted Li Yi's understanding of ancient mathematical art in Kyushu.

Li Yi has always thought that the ancient mathematical art of Kyushu is represented by the "Nine Chapters of Arithmetic" in the "Ten Books of Arithmetic" as the highest level, and the "Nine Chapters of Arithmetic" has Fangtian, Corn, Decay, Shaoguang, Shanggong, Average Loss, Surplus Deficiency, Equation (Equation) and Pythagorean Nine Chapters, but from the point of view of modern mathematics, these nine chapters have not broken through to the solution of one-dimensional quadratic equations.

However, Su Fatzi's topic is a one-dimensional quadratic equation problem, it can be said that Su Fatzi's mathematical level should be the highest level in ancient Kyushu, and it has risen to the level of junior high school students in later generations.

It should be said that the cultural level of the piano, calligraphy, painting, poetry, wine, camellia, etc., which required hard work in later generations, was far less than that of ancient times, but the cultural level of mathematics, chess, etc., which required precise calculations, was far higher than that of ancient times, because with the development of science and technology in later generations, many poor ordinary people could not figure out the clues in their lifetime, and they could be seen at a glance after being entered into the computer.

Su Fatzi saw Li Yi's complexion, but Li Yi couldn't do it, and a smile finally appeared on his face, feeling better, well, I have been studying hard in this Hengshan Inn for decades, how can I compare to a little hairy child who has not dried up?

Su Fatzi's smile was like the morning fog on Hengshan Mountain outside the window, and before he could completely envelop the town, he was about to be dispelled by the sunlight that came out.

Li Yi picked up the pink stone again and compared some symbols on the ground that Su Fat Man couldn't understand, and Su Fat Man looked at the movements of Li Yi's hand with his eyes, for fear of missing a step.

The one-yuan quadratic equation is also a piece of cake for Li Yi, and it won't take long for Li Yi to figure out the answer, Li Yi saw the appearance of Su Fat, and said in his heart, You put on such a big posture, you want to eat me, do you still want to steal learning?

Although there is a saying in later generations that "science has no borders", now Li Yi has not figured out the origin of Su Fatzi, but he is unwilling to pass on this knowledge that is too advanced.

That's right, in ancient Kyushu, many secret skills were even passed on to sons but not disciples, daughters-in-law not daughters, just with Li Yi's mathematical skills, if there is no secret thought, everyone thinks it is strange?

Li Yi looked at Fat Su's somewhat worried expression, and only sat on the stool and said lightly: "Fat Su, the answer is four, right?"

..................

Thanks to Little Wukong 12, Silver Moon ‰ → Feng, Undead Lord, Gluttonous Charm, IGDBD, Dulangqing, Li Burning Lonely, Lazy Worm in the Knife, and Mountain Kid-Yuesheng Daoyou for their tips.

Continue to code words, strive for today's two watches, and repay the love of all Taoist friends!