With a laugh, I saw Li Tai, a little fat man, dressed in a gorgeous costume, walking in with a smile.

Kong Yingda and Xu Hongzhi, who were close to the door, hurriedly got up and arched their hands: "I've seen His Royal Highness King Wei!" ”

Li Zexuan was also surprised, and said to Li Taiyao: "I've seen His Royal Highness King Wei!" ”

The rest of the students looked at Li Tai in surprise, and were about to get up and salute, when they saw Li Tai smiling and waving his hand: "No need to be polite, today this king came to the country to listen to the class, and I will also be a student of the Arithmetic Academy in the future, and we will all be classmates in the future!" ”

"Buzz..."

The students in the classroom heard the words and talked about it.

"Oh my God, His Royal Highness King Wei will be a classmate with us in the future, did I hear me right?"

"It's incredible!"

"Our new gentleman is so powerful, he has attracted His Royal Highness King Wei here!"

"I have decided, I will stay in the Arithmetic Hall in the future, there is such a powerful gentleman, and there are classmates of His Royal Highness King Wei, what else do I go to the Simen Academy to do?"

"What Brother Meng said is extremely true!"

………

As the so-called "learn to become a literary and martial artist, goods and the emperor's family", they are scholars who study hard, not in order to be appreciated by the emperor in the end, and once the carp jumps into the dragon gate? Now there is a King Wei who is most favored by His Majesty in the arithmetic hall, why do they still want to leave?

Kong Yingda couldn't help but be shocked when he heard that Li Tai was going to study in the Arithmetic Academy, and hurriedly dissuaded: "Your Highness, this must not be!" ”

Li Tai said with a smile: "Kong Sai Wine, my father has already agreed to this matter, and I will be a student of the Academy in the future." ”

Kong Yingda shook her head helplessly and stepped aside.

Li Tai looked at Li Zexuan again and said: "After saying goodbye to the Strange Pavilion that day, Brother Li was first knighted, and then appointed by my father as a doctor of national supervision, Brother Li is really prosperous!" I just don't know if Dr. Li is willing to accept Xiao Wang's student? ”

Li Zexuan heard that Li Tai was going to come to the arithmetic hall as a student, although he had no expression on his face, but he was a little strange in his heart, he didn't know what kind of moth this little fat man was going to come over again, didn't he have been abused enough by himself last time, and wanted to come back to find the field?

Haha, come on, come on, he's not afraid of this little fat man.

"Why did His Highness say this, as the so-called teaching is classless, since he is teaching in the Arithmetic Museum, naturally anyone can teach, but if His Highness enters this Arithmetic Museum, there will only be teachers and students here, and there will be no King Wei anymore!"

I have to give this little fat man a vaccination, in case he comes over to put up a shelf with everyone, then how can he teach himself, and how can other students learn?

Li Tai understood the meaning of Li Zexuan's words, and he smiled: "Of course, from now on, in this arithmetic hall, Mr. and all my classmates can directly call me Qingque, and I will not put on a shelf." ”

Last time in front of the Wonder Pavilion, he was speechless by Li Zexuan's ten consecutive questions, Li Tai has regarded this matter as a lifelong shame, he has been loved by Li Er's eldest grandson since he was a child, and has been praised many times for his intelligence, how can he be willing to lose to Li Zexuan, a nameless boy who was unknown before.

Yesterday, when he heard that Li Zexuan was going to be a postdoctoral fellow in arithmetic, he was moved in his heart, thinking that why not learn the knowledge from Li Zexuan, and then use these knowledge to defeat him head-on, wouldn't it be more refreshing?

Therefore, Li Taicai asked Li Er to enter the Arithmetic Hall to study. Li Er has always loved this child, and besides, this is not a big deal, so he naturally agreed.

Li Zexuan heard Li Tai's assurance, nodded and said, "Then Qingque, you can find a place to sit down!" ”

Li Tai looked around, and finally sat down between Tie Dan and Lan'er with the disappointed looks of some students.

Kong Yingda and Xu Hongzhi next to him widened their eyes in disbelief, the King of Wei was stubborn, and the Manchu Dynasty was well known to the civil and military forces, Li Zexuan spoke to him in such a commanding tone, he was not angry, this, isn't this a hallucination?

After Li Tai sat down, Li Zexuan looked at him and asked, "Qingque, you said before that you had a problem, now say it!" ”

Li Tai looked like a good baby, got up and arched his hand: "Mr. Hui, the student's question is: there are two people standing together today. Line A rate is seven, line B rate is three, B goes east, A goes south ten steps and obliquely northeast and B will, ask A and B how much each line is geometrical?"

After that, the corners of Li Tai's mouth hooked up with a malicious smile, this question was a very rare arithmetic question that he asked several scholars in the Wei Wangfu Literature Museum to find, he specially wrote it down, and wanted to find an opportunity to make trouble today, but he didn't expect Li Zexuan to take the initiative to give him the opportunity to ask questions.

"Wow!"

In the teaching house, except for Li Zexuan and Li Tai, the rest of the people were all in an uproar when they heard this question.

"This question is so difficult, where did His Royal Highness King Wei come from to find such a problem?"

"I don't know, Brother Ke, do you know?"

"It should be from the Pythagorean chapter of "Nine Chapters of Arithmetic", I have seen it before, but it is too difficult to pick it up."

"Hiss~ It turned out to be the most difficult Pythagorean chapter, and now Mr. Li is afraid that he will be more than lucky."

"yes, it's not good!"

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

Li Zexuan inherited the memory of his predecessor, and the simple ancient text is still understandable, and the translation of this question is: It is known that A and B set off from the same place at the same time, A's speed is seven, B's speed is three, B has been walking east, A first walked ten steps south, and then walked diagonally to the north-east direction for a while before meeting B. How far have A and B gone?

Hearing this question, he was really a little surprised in his heart, this little fat man really didn't come well today. In order to solve this problem, it is necessary to use the Pythagorean theorem and the quadratic equation, which will definitely be stumped if you change people. But how could he Li Zexuan be stumped by this junior high school math?

However, what Li Zexuan didn't expect was that the ancients had already learned the Pythagorean theorem, which his former math teacher didn't tell him, it seems that the wisdom of the ancients should not be underestimated at any time!

In fact, in the "Nine Chapters of Arithmetic", the Pythagorean theorem was recorded in detail, but at that time it was mainly applied in astronomy.

At the beginning of the Pythagorean chapter of "Nine Chapters of Arithmetic", the Pythagorean theorem and its deformation were first discussed. And the strand is multiplied by itself, and the rest of the square is divided, that is, the hook. and hook self-multiplication, self-multiplication with reduced strings, and divide the rest of the squares, that is, strands.

Therefore, Pythagorean can be understood as a method of extrapolating the third side of a known right triangle from both sides.

Li Zexuan quickly listed the equation in his heart, and settled it, and came up with the answer in a few breaths, this is the benefit of strong spiritual power, making his brain like a calculator.

"Hehe, Qingque is a very good question, some of you may think this problem is difficult, but in fact, as long as you learn my new style of arithmetic, this problem can be solved with just a cup of tea."

After Li Zexuan finished speaking, the rest of the students whispered in disbelief, Li Tai looked at him indifferently, in fact, what he thought in his heart was that Li Zexuan must be bragging.

Li Zexuan smiled and said, "The answer to this question is that A walked ten and a half steps, and B walked twenty-four and a half steps, Qingque, am I right?" ”

Li Tai couldn't calm down anymore, he opened his mouth wide, and said, "How is this possible?" The bachelor of Wei Wangfu calculated it for two days! ”

As soon as the rest of the students heard it, they knew that Li Zexuan had answered correctly again, and they couldn't help cheering.

"Great, Mr. Li is right, you don't have to leave the Arithmetic Hall!"

"It's amazing, Mr. Li is really amazing!"

"It's great that we can learn such great arithmetic in the future, haha!"

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

Li Tai was stunned for a long time, and finally relieved himself, and said to Li Zexuan: "Mr. is knowledgeable, and Tai is convinced!" ”

Seeing this, Lan'er in the back smiled like a crescent moon with her two small eyes, and she was very proud of having such a powerful brother.

Tie Dan is also proud of his face.

Kong Yingda and Xu Hongzhi were shocked and silent, and said in their hearts: It seems that this country is a great big man!

"Okay, two quarters of an hour is up, since you didn't stump me, then I will be your husband from now on, from today onwards, I will lead you to the door of arithmetic, and then you will find that you have come to a new world!"

Li Zexuan looked at the hour and said aloud to the children.

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

Thank you for the surname Gong, the preface to the word Lao Gong, and the one who is not too hot in Tokyo is rewarded again and again!

Thank you for the two more monthly passes of the surname Gong and the preface of the word Lao Gong.

Thank you for your recommendation votes!

(End of chapter)