Among the six arts of Confucianism, music, archery, royalty, calligraphy, and mathematics, although the mathematical arts are on the list, they are ranked at the bottom, and have never been taken seriously, and are considered to be just the study of the micro-end, therefore, there are not many people who are proficient in mathematical arts in Confucianism, but the yin and yang family, the soldiers, and the vertical and horizontal families in the hundreds of sons are quite proficient in the mathematical arts.

It's a pity that these sects are almost lost in the land of Kyushu, so the development of digital arts in Kyushu is very slow.

Zhu Weiyan is talented and intelligent, and when he was a child, he occasionally got a book of arithmetic scriptures, and he was very interested in reading, so he had a lot of experience in mathematics and art, so he came out to challenge Li Yi Mengpei.

"Brother Meng, Xiaodao is not talented, let Xiaodao for a while!" Seeing Zhu Weiyan's confident appearance, Li Yi couldn't bear to hit her, but he was entrusted by others and loyal to people, since he promised Meng Pei, he went all out.

As soon as Li Yi said it, everyone was in an uproar, looking at Li Yi with incredible eyes, everyone really didn't expect that Li Yi would also be involved in mathematical arts, so what else would Li Yi not do?

Seeing that Li Yi was out of the ranks, standing opposite him with a calm face, looking at himself with a smile, Zhu Weiyan suddenly felt a little bad in his heart, but this was also an instant, Zhu Weiyan quickly calmed down and said, "Li Gongzi is really an all-rounder!"

The rules of the game are that one person makes one question, and if the opponent can't get the correct answer in a stick of incense, then it is considered a victory.

A smile appeared on Li Yi's face, and he waved his hand and said, "Miss Zhu, please!" It was as if there was no competition between the two, but an outing.

In that way, Su Mei, who had always been unhappy, snorted coldly again, and muttered, "Mischievous." ”

If today's incident is not about the reputation of Yuelu Academy in the Meng family in Zou Cheng for thousands of years, but just the exchange between ordinary students, how good it would be!

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Zhu Weiyan couldn't help but think, and after settling down, she said in a clear voice: "The little woman is disrespectful, the following is the question of the little woman: There are chickens and rabbits in the same cage today, with thirty-five heads on the top and ninety-four feet below, ask the chickens and rabbits how much they are?"

As soon as Zhu Weiyan's question came out, everyone calculated in their hearts, and the fat man Su even made a "snap" of the abacus.

In terms of the level of ancient mathematical art in Kyushu, this topic is not difficult, nor is it simple, because this kind of problem, which was called "binary equation" in later generations, has been recorded in the ancient arithmetic books of Kyushu, but in ancient Kyushu, there was no "substitution method" in modern mathematics, but only "reasoning method", so it is more troublesome to solve.

For example, according to the ancient "method of reasoning", the solution should be as follows: cut off half of the feet of each chicken and rabbit, then the chicken becomes a "one-legged chicken" and the rabbit becomes a "two-legged rabbit", and the total number of feet of the chicken and the rabbit is ninety-four and half of forty-seven; if there is a rabbit in the cage, then the foot is one more than the head, and the foot in the cage is more than the head (47-35=12), so the rabbit can only be 12, and in this way, the chicken is (35-12=23).

The "reasoning method" is not a big problem to solve this kind of binary quadratic equation, but it is even more difficult to solve the unary quadratic or higher binary quadratic equations, so modern mathematics is basically the Western one, and most of the ancient mathematics of Kyushu has been eliminated.

This kind of problem naturally can't be difficult for Li Yi, Li Yi doesn't even need to use a pen to calculate, and as soon as Su Fatzi's abacus stopped, Li Yi said: "Miss Zhu, there should be twelve rabbits and twenty-three chickens, right?"

Su Fatzi looked at his abacus, and looked at Li Yi in surprise, Su Fatzi because of his profession, he has to calculate money and food every day, and Yu Shuyi is very researched, but he didn't expect Li Yi to rely on mental arithmetic, and his speed is not slower than himself.

Zhu Wei's face changed, when he first met this topic, he thought about it for an hour? Later, he gave this topic to his brothers and sisters, but the brothers either couldn't do it, or it took more time, where is Li Yi so simple?

It is estimated that Li Yi has seen this kind of topic for a long time, Zhu Weiyan said secretly.

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In the Kyushu Xiuzhen realm, this kind of turn-based competition, the first question is generally not too difficult, in order to show "courtesy", Li Yizi will not break the "rules", remembered an interesting question, and said: "There is an old man, raising eleven sheep, before dying, instructed the third son Yun: The eldest son can get one-half, the second son can get one-third, the third son can get one-sixth, if you can't kill the sheep, how should the three brothers divide it?"

The topic is close to a brain teaser, and there is not much technical content, but if you have not been in contact with it, there is no suspicion of fingers, Yuelu Academy is not obedient, Ning Buping is impatient, and has already jumped out and asked Li Yidao: "Little Taoist, how can eleven sheep be divided into one-half, little Taoist, you have no solution to this problem at all?"

It was Su Fatzi, who had already set up the abacus and wanted to calculate, but when he heard Li Yi's question, he immediately accepted the abacus and smiled.

Li Yi picked up the teacup on the table, took a sip, didn't look at the two of them, and said lightly: "You wait for the words of the two, can you represent Yuelu Academy?"

Mo Bucong and Ning Buping were so angry that their faces turned pale, but during the game, after all, they didn't dare to make a mistake, and secretly made up their minds, after this competition, they always had to find an opportunity to blood Li Yi's insult to self-esteem today.

Zhu Weiyan was stunned, obviously he didn't expect Li Yi to come up with this question, and after thinking about it carefully, he still replied seriously: "Li Gongzi is really knowledgeable and talented, and he actually has studied the most difficult and difficult to understand "Ancient Calculation Sutra" in the "Ten Books of Calculation". There is an answer to this question in the "Ancient Calculations", the old man can get six, the second child can get three, and the child can get two, right?"

"Ten Books of Arithmetic" refers to ten ancient arithmetic books of Kyushu, such as "Zhou Ji Sutra", "Nine Chapters of Arithmetic", "Sun Tzu Sutra", "Wucao Sutra", "Xiahouyang Sutra", "Zhangqiu Jian Sutra", "Island Sutra", "Five Classics Arithmetic", "Fixation", and "Ancient Sutra".

This time it was Li Yi's turn to be dumbfounded, he didn't expect that this topic had already been recorded, and it seemed that he still underestimated the wisdom of the ancients! This Zhu Weiyan said that "The Ancient Sutra" is the most difficult and difficult to understand in the "Ten Books of Calculation", but he is familiar with the topic, and he can't do it if he doesn't admire it!

Li Yi said with a smile: "Miss Zhu is really knowledgeable and talented, and she has solved the siege for Xiaodao, otherwise, some people still say that Xiaodao's topic is not solved at all?"

Zhu Weiyan was embarrassed in his heart, and secretly said that the two junior disciples of Mo Bucong and Ning Buping were first called "laymen", and they were taught by Master Jiang Wanyu.

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Zhu Weiyan thought that Li Yi was proficient in the "Ten Books of Calculation", so he did not dare to ask questions from the "Ten Books of Calculation", which made Li Yi's mind go by, and the "Ten Books of Calculation" even had topics such as "dividing sheep", who knows if there are other rare topics such as brain teasers? If you are not good, you may be in trouble, you know, Li Yi has been thinking about this topic of "dividing sheep" for a long time.

Zhu Weiyan threw out a self-designed topic and said: "Li Bai walked up the street, carried the pot and went to buy wine." Double the store, see the flowers and drink a bucket. Three encounters with shops and flowers, drink up the wine in the pot. How many buckets of wine are there in this pot?"

Over there, Su Fatzi's abacus was knocking again, and this time before Su Fatzi's abacus stopped, Li Yi reported the answer, saying, "It's seven eighths of a bucket, right?"

Su Fatzi looked at Li Yi in disbelief, obviously not believing that Li Yi's speed was actually faster than himself.

Zhu Weiyan's voice trembled a little, and in broad daylight, he said, "Li ...... Li Gongzi, why are you so fast?" This topic was created by Zhu Weiyan himself, and it was not recorded in any books, Zhu Weiyan was very proud at the beginning, Li Yi actually reported the answer casually, can Zhu Weiyan not be shocked?

"This is a problem, if you think about it in a conventional way, it is naturally difficult. Although Li Yi was puzzled by Zhu Weiyan's expression, he didn't think of more, and announced his own solution method: "But if you think about it backwards, it's much simpler, Li Bai's last wine in the question is zero, so when you meet the last flower, there is a bucket of wine in the pot, and when you meet the last shop, there is a bucket of wine in the pot, and you can just push it down once......"

Zhu Weiyan couldn't cry or laugh, he didn't expect his killer weapon to be found by Li Yi so much to find a shortcut to the south, and he didn't know how to speak for a while.

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"Hehe, backward deduction method, what a backward deduction method, I have been immersed in mathematical art for decades, but I didn't even think of the backward deduction method! Little girl Zhu, you don't need to try again, you are not the opponent of this little Taoist priest in mathematics?"

Su Fatzi's squinting eyes flashed, as if he remembered something, holding an abacus in his hand, he came to Li Yi's face, and said word by word: "Little Taoist, I also have a few questions here, how about you answer them together?"

Before Li Yi could speak, the Yuelu Academy didn't obey or do it, and scolded Su Fatzi: "Where did you come from, what is your identity, dare to ask me to wait for Yuelu Academy's unparalleled Senior Sister Zhu to admit defeat?"

"It's really a layman, Jiang Wanyu is not wrong at all!" Su Fatzi snorted coldly, his figure flashed quickly, and he came to the side of Mo Bucong and Ning Buping, just like Jiang Wanyu, grabbed one with one hand, and shouted: "Get out of here!"

This time, Zhu Weiyan didn't even have time to intercede, so he saw Mo Bucong and Ning Buping flying out again, and there was a "poof" sound, and the two of them were thrown into the street together.

However, the referees Tianxuanzi and Huikong sat next to them at this time, without saying a word, quietly watching how Su Fatzi and Li Yi would develop.

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All the Taoist friends who rewarded will thank you tomorrow!