"Ahh

Taijia suddenly sneezed and shivered involuntarily, maybe someone was thinking about him, or maybe it was just that the weather was too cold.

"Don't wear thicker clothes on this cold day, look, it's cold later, but don't blame Grandma for not reminding you!"

Yi Yue hurriedly hugged a shabby dress and put it on Taijia, her face full of worry. Taijia smiled and took Yiyue's silk cotton (made of silk, not cotton) coat, but looked at Geng Wu not far behind her, looking at the fallen leaves outside the house with an unkind face.

Since he woke up, he didn't scold people only when Yiyue was present, and as soon as Yiyue left, he pointed to whoever scolded whom, and there were already many people in the tribe who had been offended by him.

After all, if you break a hand, no one will feel good. Even if Yiyue was present, it was difficult for him to speak, and he treated everyone around him with a cold attitude.

Taijia was also scolded, but he was treated as a fart.

Since the defeat of Yangyuan, it seems that Qiu Luo can't use the Taijia, after all, he killed his son, although sometimes he will ask for himself, but with the urine nature of the person in power, when he can't use you, it is not too far to throw you away.

I heard that Biya successfully took over the power of Shushan and coerced the princes of the Son of Heaven. Pi Strike didn't have the slightest movement, Taijia felt that this was also a matter of course, after all, the Di clan won a big victory, where could he start?

As long as he protects Yakult, he can't make waves.

"What do you want?" Yiyue chuckled and knocked Taijia's head, "Hurry up and dress tightly and send the things!" ”

"What's that? To whom? Taijia looked confused.

Yiyue couldn't cry or laugh: "This stupid child, our family was taken care of by the elders at the beginning, otherwise we would all die!" Grandma prepared some food and hurriedly sent it to the elders! ”

Taijia answered, there was nothing to do anyway, so he walked out with his baggage, weighed it, the things inside seemed to be quite heavy, and there should be a few sausages that Taijia brought back. He was gluttonous, thinking to himself how generous his mother was.

The dry and cold wind was howling, and even the air had a chill of ice. There were many fewer pedestrians on the street, and they all walked with their heads down, not noticing the presence of the Thai armor at all.

Gong Changqiu's house is still very dilapidated, so broken that even his grandson Gong Chun can't live in it, and he takes turns to spend the night in other gamblers' houses. His grandson is also a middle-aged man of forty years old, but he still doesn't have a proper job, and he makes a living by gambling, even Gong Changqiu can't say anything, so he doesn't bother to care about him.

"Elder!"

Taijia didn't knock on the door, and went directly into the room, but saw Gong Changqiu with his back to the door, seemingly busy with something in front of the table, and the dots in his hand didn't stop, and even Taijia couldn't hear him shouting.

Taka cautiously walked up, but saw a piece of paper on the huge table, on which a neat circle was drawn. Taijia remembered that Gong Changqiu used to have a circle on the ground at home, but the circle had disappeared since the paper was made.

Next to the round paper, Gong Changqiu drew dots on another piece of paper, and a bunch of strange symbols jumped on the paper, Tai Jia didn't know it, but if he expected it to be right, this old comrade should be calculating pi, and those strange symbols should be the so-called "numbers".

Before Arabic numerals were introduced to China, Chinese numerals were bizarre and still incomparably complex after thousands of years of evolution.

As for pi, the development process of this thing is extremely long, and in the pre-Qin period, there was a saying that "three days are one", and pi is about 3. It wasn't until he arrived at Zu Chongzhi that he calculated the seven decimal places of pi by drawing on the experience of his predecessors.

The three-digit decimal place of 3.14 used in the classroom today is the result of the wisdom of our ancestors for hundreds or even thousands of years.

The exploration of mathematics is a complex process, but all the great gods involved in this industry are admirable. Taijia looked at the old man in front of him and couldn't help but be in awe.

Putting down the pen, Gong Changqiu stretched his waist, only to find that there was an extra person in the room, and said with a smile: "Taijia, when did you come?" ”

"Just now," Taijia replied, "Grandma asked me to bring some food for the elders." ”

"Put it over there, I'm busy here!"

Taijia asked, "Is the elder busy calculating pi?" ”

"Wow! Do you actually know pi? Gong Changqiu was extremely surprised, this kind of professional terminology, few people in the entire Shu Kingdom knew it. Except for those who are old and immortal like him, only the professional mathematicians in the court know about it.

"Know a little bit about ......"

Thaika smiled, he didn't dare to say that the circumferential law was a number between 3.1415926 and 3.1415927. Mathematics is different from others, others have worked hard to calculate the results obtained for thousands of years, and you tell others with a light sentence, how do others feel?

Others will think, what is it that they have spent their whole lives reckoning? What is the meaning of his life?

What's more, others don't necessarily believe it.

"Alas......" Gong Changqiu smiled bitterly, "What's the use of knowing?" Pi is too difficult to calculate, and now we only know that the circumference of a circle is about three times the diameter, and the exact number can only be calculated without knowing the year of the monkey and the month of the horse......"

Taijia looked at the draft paper and said unintentionally: "It's too troublesome to use such numbers!" ”

Gong Changqiu was stunned: "Do you have a better way?" ”

Tygar nodded, thinking that he would tell him the Arabic numerals, so that he could easily calculate later, and it would be regarded as a piece of his kindness.

Taking a pen from Gong Changqiu's hand, Taijia wrote the Arabic numerals "0 to 9" on a clean piece of paper, and introduced them to Gong Changqiu one by one: "This is zero, this is one...... Almost all numbers can be represented by them. It's a lot easier to use than your numbers Elder! ”

The Thai thought to himself, numbers are just a representative, their ultimate way out is to simplify, if they continue to use such an ancient way of writing, how slow will Chinese mathematics be?

However, this is just his wishful thinking, and before the introduction of Arabic numerals to China, there were still many mathematicians who achieved extraordinary achievements. Numbers are not everything, and the sincerity of mathematicians is the biggest driving force for Chinese mathematics.

"This ......"

Gong Changqiu looked at the Arabic numerals written by Taijia, which deviated greatly from the numbers in his impression - how could the numbers be expressed so simply?

He was speechless in shock.

As long as that symbol can represent a certain number, then it has a meaning. It's just that he has used so many old symbols, but he didn't expect to encounter new and concise symbols in his later years.

"Then, how do you write those tens and hundreds?" Gong Changqiu is nearly 100 years old, and he believes in the wisdom of his ancestors in his bones, how can he be convinced by Taijia's words?

"Tens are like this, hundreds, thousands......"

Taijia carefully taught Gong Changqiu the use of Arabic numerals, and even the numbers after the decimal point could be perfectly expressed. Gong Changqiu almost felt suffocated, he looked at his other draft in confusion, most of the entire draft was used to write numbers, and there was very little space for real calculations - if he had known this kind of number, how could he have wasted most of his life's time?

"Eighty years of struggle is less than a teenager's day and night!" Gong Changqiu looked at the paper with numbers written on it and cried bitterly.

If he had known this number, he might have ...... Maybe Pi has already been calculated!

But he is already old, and he will ...... How much time is left to calculate pi?

"Elder, Elder, don't cry!" Taijia didn't expect Gong Changqiu to be such an old person, so he cried when he said he would. Fortunately, he didn't say the approximate range of pi, otherwise Gong Changqiu might have collapsed!

But no matter how Taijia persuaded him, Gong Changqiu just cried, always feeling as if his life had been in vain. Taijia's eyes rolled, and he hurriedly said, "Elder, actually...... Actually, I looked at your numbers and felt it! These numbers come from your hands! ”

In desperation, the Thai League can only make this decision. Although those symbols didn't seem to have the slightest relationship with Arabic numerals, they just hoped that this method could make Gong Changqiu feel at ease.

This is also a recognition of his achievements.

"Really...... It's true? Gong Changqiu touched the muddy tears and looked at the Thai armor in disbelief.

Seeing that it worked, Taijia hurriedly said, "Yes, yes!" How could such a thing come up with in an instant? I just looked at the elders' complicated numbers and tried to find a way to simplify it! ”

Gong Changqiu put away his tears, he believed Taijia's words - because he was the son of God he identified. Since he said so, it was so. Although the numbers he gave had nothing to do with the numbers in his impression, at least his efforts were not in vain.

He understands that some old things will sooner or later be replaced by new ones. It's like this ancient number from the ancient Shu clan will be replaced by such a simplified number......

"This number...... Can it be named? Gong Changqiu asked.

Thaika shook his head, he can't say it's Arabic numerals, right?

Gong Changqiu smiled: "In this way, then I'll give him a name!" …… Since you came up with it, let's call it 'Thai Numbers'! ”

"Poof!" Tygar squirted out.

"What's wrong?"

Taijia waved his hand again and again and said, "Elder, it's too narcissistic to name this thing after me, can you change the name?" ”

Although he knew that later generations of mathematicians, chemists, and physicists all named after themselves what they discovered, Arabic numerals were not his patent after all, and it was indeed a bit shameless to name them after him.

"I'm making a decision! It's called 'Thai Numbers'! Gong Changqiu didn't care about this, "If you invent the number, use your name!" I'll see who dares to stop it! ”

“……”

Taijia was speechless, but he no longer refuted, but his heart was full of apologies for the Indian scientist "Baghdad".