"So...... That's it...... Ha, it's done! ”

Although Zhang Shou has always asked for on-site blackboard answering questions to explain at the same time, at this moment, even if the blonde boy wrote a long list by himself, the verbal explanation was only a few words, but no one in the stunned students still remembered to question it, and they were all stunned by the teenager's complicated formula quotation and the beautiful italic alphabet formula.

This kind of geometric proof question, such a young man from Fanbang who only claimed to be here to listen to it before can easily do it? It's incredible!

And the blonde boy who put down the pen and turned around to clap his hands, his face was also full of excitement and joy. He walked quickly to Zhang Shou, grabbed the other party's hand and shook it vigorously: "It's amazing, Master Zhang, you're really amazing!" I didn't expect you to be really proficient in geometry! Have you seen Στοιχε?? α" was originally right? Do you know Latino too? ”

It has been discovered that the blonde boy is directly talking in Italian as soon as he is excited-as if he has the habit of Greek, Zhang Shou is already very calm at this moment. Be considerate, it's nice that you don't have a long list of Italian or Tuscan words coming out of your mouth. And it can be seen that this is a Florentine bear child with some mathematical skills.

Therefore, although he had already seen the three princes and others outside the door, his eyelids did not blink, and he was still calm, as if Mount Tai had collapsed in front of him and his face did not change. Of course, Tarzan didn't collapse, and he really didn't need to change color, because at this time, it was this kid with obvious extraordinary talent who felt that he knew everything about such a trivial matter.

“《Στοιχε?? α》…… It's a hard word to pronounce, and my tongue is almost getting around. After laughing at himself, he shook his head and said, "Of course I can't have seen the original, I'm only seventeen years old, a native of Gyeonggi, and I haven't even gone out to Suncheonfu in my life, let alone your distant hometown." ”

Although he didn't fully understand Zhang Shou's words, the blonde boy still understood the core meaning, and he suddenly showed a disappointed expression. He listened to Zhang Shou's class before, and at first he didn't understand those unheard of terms, and he didn't have a textbook, so he felt a little bored, however, when Zhang Shou began to explain the topic with a board book, his boredom suddenly turned into a surprise.

Although many of the symbols and letters written by Zhang Shou are somewhat different from what he knows and pronunciation, the sense of familiarity cannot be faked. And after Zhang Shou finished talking about a topic on the blackboard, he couldn't hold it back. Because this is exactly what he saw on the desk of the human study when he followed his father to visit a certain scholar!

Therefore, after Zhang Shou finished talking about that topic, he couldn't help but raise his hand to signal that he had another calculation method, and then went up to calculate it again. Although he felt that it was much more cumbersome than Zhang Shou's writing, the excitement of meeting fellow travelers in a foreign country overshadowed everything.

But now, his mood has fallen from the peak to the bottom. The young bachelor in front of him actually said that he was only seventeen years old, and he had never left here, so the probability that the other party knew Greek was very low, and he had read Euclid's original "Στοιχε?? α" is even less likely. After all, it was here that even he saw the Latin text that his father treasured.

Perhaps, this Bachelor Zhang has only read a lot of books, or has had a very knowledgeable teacher, so only then will he know "Στοιχε?? α to know Caesar and Octavian...... Alas, in the end, he still thought of the trip to the East too simply.

And just when he was depressed, he heard a faint voice in his ear: "Also, please let go, remember, here, in the capital of the Ming Dynasty, in the face of someone with a higher status than you, casually grabbing his hand, it is very likely to be identified as an assassin." I don't think you would be so reckless in your hometown in the face of those officials and nobles, would you? ”

The blonde boy hurriedly let go of his hand and took a step back, and then he wanted to apologize, but at that moment, he glanced around uneasily, and finally saw the people outside the door. At first glance, the people were not very old, most of them were about the same as the students who were sitting, but the child in the middle was obviously younger than himself, and his clothes were different from others.

He was very observant, and vaguely felt that these people seemed to be extraordinary, and he forgot to apologize because of this. And his rude gaze immediately angered a certain attendant behind the third prince. Almost without hesitation, the people stood up and scolded: "The people of a foreign state dare to be so rude in front of His Royal Highness the Crown Prince!" ”

This is the crown prince of this great eastern country? So small? No, isn't it right, in the future, the unbelievably large country in the East will be inherited and ruled by this prince? How many times larger is this country than Florence, and how many times more powerful is this prince than the Medici family?

Such a question was swirling in his mind, but the blonde boy finally bowed his head and arched his hand, and then raised his head calmly: "I don't know His Royal Highness the Prince, so it's rude." I've also been taught...... Sorry, this word is difficult for me to pronounce, but, since it is China, shouldn't it be tolerant of Yiren? ”

Lu Saburo, who arrived at the end, just heard the last words of the blonde boy, and he couldn't help it, and immediately burst out laughing. Especially when he saw that the waiter who wanted to behave in front of the third prince had a red face as if it were dripping blood, he coughed dryly and teased.

"People don't know His Royal Highness the Prince, so what's the matter if you are curious and take a second look? The people of Huawai do not know etiquette, and in the past, those envoys from Fanbang came over, and Honglu Temple had to send someone to teach them! Even so, during the Great Pilgrimage, how many people couldn't help but look up at the Holy Face? ”

The little fat man stepped forward as he spoke, and was about to hint to the third prince to open his mouth to soothe the blonde boy, but he didn't expect that the third prince, who had been staring at him, suddenly turned his head a little stiffly, but said in a dry voice: "Senior Brother Lu, look at the blackboard." That's a problem he's just solved. ”

"Huh?"

This time, Lu Saburo finally put away his banter. He walked directly into the Jiuzhang Hall, came to the blackboard in full view of everyone, and watched the problem-solving process on the blackboard intently. For him, who is already in the "second grade" and has a super fast self-learning speed, he has almost finished learning plane geometry, and it is not a problem to understand this quite basic isometric problem.

But because he is very familiar with it, when he sees this dense solution idea, even if he has realized that this solution is very cumbersome, and some steps are not even necessary, he still can't help but mutter.

This Bang boy is not the third prince...... His Royal Highness the Crown Prince is very talented in arithmetic, and he is willing to work hard, and the most important thing is that the "New Edition of Ge's Arithmetic" is used as a reference textbook, and he was once personally tutored by the emperor. And this kid is just a boy from a small Western country, and it is said that he is still a son of the outer room, so he can understand this question so easily? It's not scientific!

However, it also proves another thing. Under the recommendation of Zhang Shou, the ancestor Ge Yong gradually began to use Arabic numerals from the West and a complete set of symbolic systems, and a lot of knowledge in the "New Edition of Ge's Arithmetic" is more intuitive and concise than the nine chapters of arithmetic, or simple and easy to understand...... So, some of the things they are now in Jiuzhangtang Middle School are really from Fanbang?

Zhang Shou's teachers who have never been hidden, or teachers, have really traveled overseas?

Thinking so in his heart, Lu Sanlang, who had already watched the entire problem-solving process, turned around slowly, but gave a thumbs up to the blonde boy with a smile on his face: "Not bad, yes, I heard Gonggong Chen say that there will be such a person to help translate those arithmetic classics, but after hearing about the age, I thought it was a number, but I didn't expect you to be a little really talented." ”

Although the blonde boy could only understand about half of what Lu Saburo said, he could at least hear what others were praising him. Therefore, the boy's face showed a little excitement and pride, and he did not say that he had only been visiting a certain Florentine scholar, and had the privilege of reading the manuscript posted on the wooden board a few times, so he stole a little bit of it.

He straightened his chest and said in an extremely confident tone: "I have always been self-taught, of course I will do this kind of problem!" ”

Seeing that the eyes of the third prince flickered, and he seemed to be very interested in the blonde boy, Zhang Shou couldn't help but smile secretly, thinking that His Royal Highness the Prince, who seemed to be calm but also had a heart to break away, should not take people to the East Palace on a whim, and said lightly at the moment: "Since you have made this question, then, try these two questions again." ”

Zhang Shou casually beckoned two students to come up and wipe the blackboard, and when they laboriously wiped the blackboard clean, he picked up the pen and wrote the blackboard.

In an instant, two questions with drawings appeared in his pen. At this time, he clapped his hands and smiled slightly at the blonde boy.

This time, Lu Sanlang, who saw Zhang Shou's questioning process throughout the whole process, couldn't help laughing.

For him, who has memorized all the axioms and theorems of plane geometry and various inferences, the proof process of these two problems is a little complicated, but as long as he grasps the key ideas, then the problem can be easily solved.

However, as far as he saw the blonde boy's proof process just now, he thought that the key idea person might be able to find it with intuition and sensitivity, but the two theorems and one inference used to solve the problem might not be known to the other party. As for asking him why he knows this...... It's very simple, just look at the tedious problem-solving process that this kid just has.

Therefore, Lu Saburo quietly and gently pulled the third prince who wanted to speak, and watched the blond-haired young man standing in front of the blackboard with a solemn face. After a long time, he stopped after writing only three lines of words, and then fell into deep thought, and without even trying to solve the other problem next to him, he glanced at the other attendants who were with him.

And at this time, he found that several people from Jiuzhangtang were whispering, but the topic of discussion was not that someone was not self-sufficient, but the difficulty and thinking of these two questions, and the two waiters from Banshan Hall were in which small country the idle man came from, but the two people from Guozijian were sneering in private.

Especially the blonde boy who was severely criticized by the righteous words before sneered indignantly: "A kid from a small country in Fanbang, does he think that he is an arithmetic genius like His Royal Highness the Prince?" ”

Another person also hurriedly chimed in: "Don't look in the mirror either!" The esoteric field of arithmetic is also something he can easily set foot in? ”

Tut-tut...... Even though Lu Sanlang's bitter side has been put away a lot now, especially in front of those attendants in Ciqing Palace, he still couldn't help but raise his eyebrows when he heard these two people sing and say such things in harmony: "Yo, when did arithmetic become an esoteric field?" I remember when you were struggling with arithmetic classes, you didn't seem to say that. ”

"His Royal Highness the Crown Prince, you shouldn't spend too much time on this kind of strange weapon; No matter how good the arithmetic talent is, it will not help the country, what is the use of us learning this! Seems to say so, right? ”

Hitting people does not slap people in the face, exposing people does not expose shortcomings, for the two attendants who were born in the country and have always agreed with this, their private words were so ruthlessly exposed in person, and in front of the three princes, the embarrassment is really extraordinary.

The prisoner who had just reprimanded others for not looking directly at His Royal Highness the Crown Prince reacted almost instinctively: "Lu Sanlang, what do you mean by this?" When did the two of us say this, don't make it up! ”

If you are still convinced, then show the evidence!

Seeing that the person's expression of anger but hidden color and inwardness seemed to reveal such a meaning, Lu Sanlang immediately laughed and said, "Ah, so you didn't say it? Tsk, that's the person behind the snitch is too much, well, that's my fault for the person, I'll apologize to you...... However, you should remember to turn in your homework when you go back. ”

"After all, His Royal Highness the Crown Prince with outstanding talent has studied hard, and the arithmetic science that you have always spoken of is worth your hard work, right? Don't be compared to the Fanbang boy in your mouth! ”

Although Lu Saburo really bowed decently and apologized, the two prison attendants couldn't help but turn pale. It took a long time for one of them to hold back a sentence: "That's nature, it's just that the other courses ......."

"As an attendant in the East Palace, since you are serving the prince in Ciqing Palace, you naturally can't take other courses lightly."

Zhang Shou didn't wait for anyone to finish speaking, and immediately interrupted. He glanced at Lu Sanlang angrily, and saw that people were touching their noses there, and he wanted to say that you were killing a thousand enemies and losing eight hundred, as if you were working hard in other courses. The next moment, he suddenly noticed something, and when he looked back, he saw that the blonde boy was rustling something in the corner of the blackboard.

When he looked at it again, he found that the man was trying to prove the equilateral equilateral angle and then applied it to the problem, and after he was slightly stunned, he realized that the man had not read through Euclid's "Geometry Primitive" at all. He stepped forward and gently pressed the boy's hand that was trying to write down the proof: "Okay, that's enough. I now know what your arithmetic skills are. Don't worry, I won't send you to mine! ”

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