Xin Ran, the gentleman of Wenzheng Academy in Guide Prefecture, is responsible for teaching students the way of mathematics, although it is not a compulsory part of the imperial examination, but it is also quite loved by students.

After all, this thing is more practical, and it is inevitable that you will encounter all kinds of math problems in life.

Moreover, Xin Ran is also one of the few people who are most proficient in the way of mathematics in the entire Guide Mansion, because of his profound attainments in the way of mathematics, he is a figure who can be counted in the entire Ming Empire.

Over time, I got a nickname: Xin Operator!

There was something important going north to the capital this time, but when he just arrived in Puyang, he received a message from his disciple Shen Meishuang that someone claimed to know how to cut a circle, and he was still eight or nine ten.

After hearing the news, Xin Ran didn't have the slightest intention of going north, so he turned the horse's head directly, and returned to Guide Mansion in only three days. After coming back, she drove the carriage into Su's house as soon as possible, but unfortunately Su Baiyi happened to be not at home, and the little girl couldn't withstand Xin Shuanzi's intimidation and threat, so she could only take him over to find her young master.

But his attitude made Su Baiyi a little unbearable.

I don't care if you are a Xin operator or a sweet operator, will Lao Tzu cut the circle technique, what does it matter to you?

The point is, how old are you, you can't spare me if you open your mouth and close your mouth?

"I don't know how to circumcision, what does it have to do with Your Excellency?" Su Baiyi didn't save him any face, and directly raised his face and asked.

"What does it have to do with me? Hahaha, the old man Xin Ran, nicknamed Xin Operator, is the most unscrupulous person in his life, if you dare to cheat under the guise of the sages, hehe...... "Xin Ran is unceremonious, and he is also quite domineering.

"Oh!" Su Baiyi replied, and then continued to bow his head to eat.

Paralyzed, Lao Tzu doesn't serve such domineering people!

"Chunyan, you also sit down to eat!" touched Chunyan's head and asked her to sit down next to her.

This time, Xin Ran was a little confused!

Don't they all say that future generations respect teachers, respect the elderly, and love the young? Why doesn't this future seem to understand the rules?

"Su Baiyi, you are really arrogant!" After being thundered by Aunt Sun, Yu Mingyu was going to leave, but when he saw this posture, he opened his mouth sarcastically: "Don't you know that this person in front of you is the famous Master Xin of Wenzheng Academy?" You are so rude, do you know how to respect teachers? ”

Su Baiyi said plainly: "Su doesn't seem to be his disciple of Master Xin, right?" ”

"Hehe, you're right!" Yu Mingyu was happy, and the more Su Baiyi behaved unruly, the happier he was: "But as a scholar, you should respect your predecessors, shouldn't you?" ”

Even Yang Juan "coughed" twice to hint, signaling him not to anger Xin Fuzi.

Xin Ran's face next to him was a little gloomy, if today's situation had happened somewhere else, he would have turned around and left, but unfortunately, what he had a big plan for today was too big to leave easily.

"You're right!" Su Baiyi raised his head, raised his face that looked bad, and said very confidently: "But someone Su has heard another saying, which is called learning without order, and the master is the teacher." ”

What he said was not subtle at all, and he almost told the people around him that Lao Tzu was the senior, and you were just juniors in front of me.

"Good, good, good!" Xin Shuanzi clapped his hands, but his face was very gloomy, as if he was trying to suppress the anger in his heart, and said in a low voice: "Then let me Xin Ran see today, the level of your master, doesn't Mr. Su claim to be able to cut the circle technique, don't you ask for advice." ”

"You want to learn?" Su Baiyi pouted his head and didn't give him face at all.

"Yes, if Mr. Su really knows how to cut the circle, what if Xin Ran becomes a disciple?" Xin Operator gritted his teeth, and his body trembled slightly. I have been lecturing in Guide Mansion for nearly 20 years, but I have never seen such a faceless person as the junior in front of me.

"Then let's apprentice!" Su Baiyi pulled the hem and sat there upright.

"You, you, you ......" Xin Ran thought that he would give himself a face, and then get off the donkey down the slope, but he didn't expect this product to be so unpopular, so he let the apprentice without saying a word.

Who am I?

I'm a gentleman from Wenzheng Academy, I don't dare to say that there are three thousand peach and plum under the door, but there are still three or four hundred, if I want to worship this little guy as a teacher today, then I will have no face in Guide Mansion in the future.

"Su Baiyi, if you don't have any material in your stomach, forget it, why bother to make these false thresholds to embarrass Mr. Xin, I said you, it's just a bluff." Yu Mingyu lost no time in sarcastically beside him.

Su Baiyi would not have been moved, but if he didn't show it once or twice, others would think that he was really a straw bag who could only brag, so it would be better to deter them.

Besides, he likes this kind of thing like slapping his face on the spot!

"Mr. Xin!" Su Baiyi ignored Yu Mingyu, but turned his head to look at Xin Ran, and said with a smile: "In that case, dare to ask Mr. Can you try to cut the circle?" ”

"Hmm!" As soon as Xin Ran heard about academics, he immediately threw away the resentment just now, nodded and said: "Naturally, I have tried, but it is always unsatisfactory, and it is far from the data obtained by Liu Hui." ”

"Dare to ask Mr. how to cut the method?" Su Baiyi sat there, generally drinking tea, while asking.

Xin Operatorzi frowned, how can he face this goods, but he wants to face his husband, no! However, in order to obtain the coveted great technique of circumcision, he still answered honestly: "There is nothing magical about it, just draw a huge circle on the flat ground, and then connect the polygons one by one, and finally measure it with a ruler." ”

"Sure enough!" Su Baiyi nodded and said, "Mr. is cutting the circle like this, it is a deviation in the understanding of Liu Hui's circumcision!" ”

"Where's the deviation?" Xin Ran's eyes lit up instantly.

"Let's not talk about the deviation first, let me first talk about the three deficiencies of your method of cutting circles, and you can listen to whether it makes sense."

"Please advise!" Xin Ran took two steps forward and looked at Su Baiyi with his head hooked, at this moment, he really looked like a disciple who was striving for learning, and Su Baiyi was a gentleman.

"First, when measuring with a ruler, there is an error, and you can't measure the exact value!" Su Baiyi talked eloquently.

"Indeed!" Xin Operator did encounter this kind of problem in the process of calculation, and he had to admit it when he was pointed out by Su Baiyi at this moment.

"Second, draw a circle on the ground, the ground is uneven, and what you draw is not a standard circle." Su Baiyi continued: "Third, in the process of drawing a circle with rope assistance, the tightness is different, and the final circle is also biased!" ”

"Mr. Xin, I don't know if I'm talking about these three points, right or not?"

"Yes, yes!" Xin Ran thought so.

In fact, in the process of cutting the circle, he did encounter such problems, and also thought of a variety of ways to make up for the errors caused by these factors, but unfortunately, he could not draw a standard circle as he wished.

"Then dare to ask Mr. Su, how can I get the standard circle?" Xin Ran thought that Su Baiyi must have a way to draw a standard circle, so he was so calm.

"It's impossible, no matter what, to draw a standard circle!" Su Baiyi waved his hand.

"Then Su, Mr. Su, if there is no standard circle, how to cut and calculate?" Xin Ran wondered.

"Huh!" Su Baiyi had no intention of letting Xin Ran apprentice at this moment, and he didn't think about self-respect, so he said without reservation: "So, Mr. Xin, you cut the circle in the wrong direction, and there is a big deviation in the understanding of Liu Hui's circumcision, in fact, cutting the circle is not about cutting out one of the sections and then measuring the length." ”

"That?" Xin Ran's eyes were as bright as the full moon, and his body couldn't help but tremble slightly: "Dare to ask Mr. Su, how is that ......?"

"Count!"

"Count?"

"Yes, count, count!" Su Baiyi still smiled, looking at Xin Ran, who was suddenly enlightened but didn't grasp the key point for a while, and reminded again: "The length of the string can be calculated by the diameter of the circle, then it is divided and calculated again, it is nothing more than using the Pythagorean method many times, compared to the Pythagorean method, it should not be difficult for Mr. ”

"Oops!" Xin Ran slapped his forehead fiercely, with an expression that I hadn't thought of earlier, and said, "I see, so it is, alas, alas, alas, alas." Liu Hui cut the word circle, I don't know if I have misunderstood a few masters in ancient and modern times, it turns out that this is the way to cut, really, alas......"

Xin Ran sighed three times, and finally bowed deeply to Su Baiyi, and said: "I forgive the little old man for not being able to worship Mr. Su as your teacher, but Mr. has solved my confusion for many years and can be Xin Ran's teacher for a day." Suzi, little old man retreats first! ”

After Old Man Xin finished speaking, he hurriedly walked out, and at a glance, he knew that he couldn't wait to verify it. Leaving behind the sighing voices of the crowd.

Although nine out of ten of those guys don't understand what the two of them are talking about just now, the sentence in later generations sums it up well: I don't know what to do!

"Hehe, nice meal!" While everyone was sighing, Zhou Lao suddenly stood up from his seat, waved his hand at Su Baiyi, and said, "The descendants of the Su family, you come here, the old man still has a question!" ”