readx;??? Zhu Changyuan came, and when he walked to the yamen of the Ministry of Industry, he was also shocked to see so many people. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

After being led by the little servant in the yamen, I came to the lecture place, and I also saw the huge black wooden plank, which was one zhang high and one zhang wide.

Nima! Zhu Changyuan casually said something when he asked Li Ji to prepare things, but he didn't expect that this product really made a one-zhang high blackboard.

Nima is one zhang wide I can write from one end to the other, but do you make one zhang high is it me Yao Ming, even Yao Ming has to worry about his toes.

Forget it, anyway, the board is big enough, so don't worry about so much.

walked to the podium, took a deep breath, dispelled the drowsiness of his body, looked at the stands, and was suddenly surprised, this lineup is really unexpected.

"It's a pity I didn't use a megaphone." Zhu Changyuan muttered to himself, hurriedly ran to the stage, said hello to everyone, and then personally walked to the quasi-VIP seats in the second row and greeted them one by one.

"Hello Master Li."

"Hello Lord Liu."

"Hello Lord Liu."

Even saw Cao Huachun also coming, and said, "Cao Gong actually knows how to do mathematics?" ”

Cao Huachun twisted the orchid and pointed and said, "Our family doesn't know how to count, so I'm here to support you Zhu Changyuan." ”

Zhu Changyuan immediately had a black line, why did you say this in public, didn't it make me offend this group of clear streams. Seeing that there was a eunuch next to Cao Huachun, he said suspiciously: "Who is this?" ”

Cao Huachun replied helpfully: "This is the person next to His Majesty, the prince Wang Chengen. ”

Wang Chengen arched his hand towards Cao Huachun and said modestly: "Don't dare, Cao Gong is my teacher." ”

Zhu Changyuan exchanged a few words with everyone, and when he retreated to the podium, he saw a few Qingliu looking at him with some disdain, but now he can't care so much.

Someone below discussed: "This is Zhu Changyuan, the general who stationed troops in Dalinghe and smashed Shenyang Wei?" ”

"It should be him."

"Sure enough, it's a talent."

"To be able to meet the general today is not in vain. Actually, I know how to circumcision an egg. ”

"I've seen it a long time ago, you know an egg, hehe."

。。。

"Lord Zhu."

As soon as Zhu Changyuan stepped onto the podium, a tall man who looked to be in his forties was waving his hand and shouting at him in the crowd standing below. At first glance, it's the kind of fan.

"Huh?" Zhu Changyuan smiled helplessly and said, "I don't know if this gentleman has any advice?" ”

The man smiled and said humorously: "I see that your hall is gray, and your eyes are slippery." The expression is sluggish, did the adults think about the problem of the circumcision last night, so they didn't sleep well? ”

Damn, it's so damn good, I can see that I didn't sleep last night.

Zhu Changyuan admitted with a smile and said, "Mr. is really a god, Zhu really didn't sleep well last night." ”

The man laughed and said, "Under Li Baohe, he is the doctor of the Tai Hospital, and he will wait for Mr. to finish his work." I am willing to prescribe a prescription for my husband. ”

"Thank you very much."

No wonder this thing is so accurate, it turned out to be a doctor, but Doctor Nima went to see a doctor well, and why did he come to Lao Tzu to join in the fun!

The people below burst into laughter, and the atmosphere suddenly melted a lot.

Zhu Changyuan showed a professional charming smile and said, "Good morning, everyone, fellow citizens, colleagues, friends, and uh, and the partner on the tree." ”

Everyone listened to Zhu Changyuan's words, and everyone couldn't help but look back. Really saw a guy squatting on a branch like a monkey in the back tree.

"Hahaha." Another burst of laughter.

Zhu Changyuan waved his hand to signal everyone to be calm, and said, "I was a guest in Xu Mansion some time ago. Speaking of this, he looked at Xu Ji and Xu Ermo who were sitting in the third row, smiled at them in a friendly manner, and said, "Talk to a few friends about the technique of cutting the circle." Later, I communicated with Li Ji of our Ministry of Engineering, and only then did I have today's circumcision analysis class. ”

Li Ji heard Zhu Changyuan say this, his old face turned slightly red, but he also felt that he had a lot of face, at least Zhu Changyuan didn't tear down his platform in front of so many people, and even looked at Zhu Changyuan's eyes a lot kinder.

This kid. That's a good thing to look at!

"Okay, without further ado, I'll start with the basics of circles!" Zhu Changyuan took out his notebook, looked left and right to see if there was no place to put it, and asked the little guy in the yamen to bring over a table, use it as a lectern, put the notebook on it and open it, and said, "What is a circle?" ”

Xu Guangqi Xu Ge Lao once translated "Geometric Original", which defines the circle as follows: the circle is equal to the length. In other words, a circle is a line that has a center of a circle, and the rest of the lines that are equal to the center of the circle are combined. ”

Zhu Changyuan came up and first took out Xu Guangqi's translation of "Geometric Original" and used it as a classic, Xu Ji suddenly felt that he had more face, although he was sitting in the third row, his waist was straight.

After a brief introduction to some basic knowledge of circles, the explanation of circumcision began.

Picked up the stone pen and drew a circle on the blackboard, how to say it, those who know know that it is a circle, and those who don't know think it is an egg, anyway, it is flattened, and it seems to be a little pointy.

"Okay, that's a circle, now, let's cut its circumference."

Before Zhu Changyuan's words fell, the following "whew" started to coax.

There was a lot of talking.

"This is the circle? Lord Zhu, this is a joke, right? ”

"My God, even if you really don't understand, even if it's perfunctory, you can't do this, at least you have to draw a perfect circle."

。。。

Cheng Shuzheng, who was sitting at the top of the first row, slapped the table and stood up directly, pointed at Zhu Changyuan's nose and said, "Nonsense, insulting my mathematics and Taoism." He lifted the abacus in front of him with a "bang", and saluted Liu Zongzhou and Liu Zunxian angrily, and said, "Two adults, please forgive me for being really powerless." Perform the great art of circumcision with such people, hehehehehe, play the piano to the cow, and talk to the chicken and the duck. ”

Song Yingxing also felt that Zhu Changyuan was a little excessive, no matter what, the circle you drew is not round, how can you cut out a correct circumference ratio?

However, as a rigorous scholar, he did not criticize Zhu Changyuan in public.

As soon as Zhu Changyuan spoke, he was interrupted, and he was very unhappy, and said: "I don't know who you are, no matter what, I respect your choice, please don't disturb me, okay?" ”

Cao Huachun smiled and said: "What Lord Zhu said is very true, what he said is very true, the so-called Tao is not the same, Lord Zhu has his own method of Lord Zhu, if you don't understand, don't twitter here, it will affect our family's lectures!" ”

pretended to understand very well, but in fact, this product didn't understand at all, and he came here just to show the world that he supported Zhu Changyuan. In fact, eunuchs are also human beings, and they also want to form gangs and make friends, but the officials of the Ming Dynasty all boast of being clear and disdain to be with them.

Some people who are willing to be attached to each other have no talent, and finally befriended a talented Zhu Changyuan who has no aversion to eunuchs, Cao Huachun will naturally try hard.

Zhu Changyuan smiled and nodded, and said: "Thank you Cao Gong for speaking up, who else doesn't want to listen, you can leave now, naturally, you can also stay, I don't care about your official position, whether you are from a famous family or not, since you are here, don't make trouble." ”

Finally calmed down the sound of everyone's frolic, looked back at the circle he had drawn, it was indeed a little ugly, wiped the circle off with a damp cloth, and said, "Since everyone thinks that my painting is ugly, I can do it again, don't be so full of gunpowder." ”

After speaking, he picked up the stone pen and drew a large circle on the blackboard, with a diameter of more than one meter.

Although it is not as exaggerated as the round flat and pointed one just now, this circle is not much better, because Lord Zhu still drew it by hand this time.

"This, this..."

Zhu Changyuan's actions once again blinded the eyes of many people present.

"Is it much better this time?" Zhu Changyuan boasted about himself after painting, looked at Cheng Shuzheng on the left of the first row, and found that the goods did not leave.

We all know that Liu Hui, a master of mathematics, has recorded in his book "Detailed Explanation of Nine Chapters of Arithmetic": Cutting is fine, what is lost is less, cutting is cut again, so that it cannot be cut, it is combined with the circle, and nothing is lost. After 200 years, according to this doctrine, the ancestor of the Northern and Southern Dynasties finally cut out the circumference ratio of the small seven numbers (seven decimal places), which is the three we know today. After a pause, he continued: "One four one five nine two six ... ”

"There is naturally data behind the six, but today, we aim to restore the art of cutting the circle of Zu Chongzhi, and do not do research on the data after the small seven numbers, so to get the small seven numbers cut by Zu Chongzhi, after years of hard calculations, a total of eleven times need to be cut, divided into forty-four steps."

"Therefore, I dare to guess that the method of cutting the circle of Zu Chong back then was the eleventh great technique of cutting the circle."

After Zhu Changyuan finished speaking, Cheng Shuzheng stood up, arched his hand towards the stage, sneered, and said, "The circle that Mr. drew on the wooden board is no more than four feet in diameter, how can it be cut eleven times?" ”

"Naturally, you can cut it eleven times!"

Zhu Changyuan smiled slightly. He knew what Cheng Shuzheng thought, the Ming Dynasty's circumcision technique, isn't it just to cut and then measure, of course it won't work, like Li Ji drew a thirty-foot circle that day, and it was only six or seven times.

"Okay." Cheng Shuzheng looked at Zhu Changyuan with a sneer, and seeing that he was so confident, he waved his hand and said, "Push it out." ”

Hearing the creaking sound from the back of the courtyard, Shaoqing, everyone saw three people pushing a strange thing bigger than the Taishi chair out at the same time.

"Since Master Zhu is so confident, he won't hide it in the future." Pointing to the strange thing, he said, "I don't know Cheng Shuzheng, this is a measuring scooter made by my grandfather, the eldest prince, and I will borrow it for adults today." (To be continued.) )