Thinking of taking advantage of the time to return to the camp to rest, it was easy to write a battle summary with the company's people, and then received an order: send all these captured people and goods to Takayanagi.

The number has been counted here, and it only needs to be escorted with fifty people.

Shu Prisoner Mi led the team, and arrived in Takayanagi five days later, and there was no danger along the way.

When I was about to arrive at Gaoliu City, I found that a group of people came on the road in the distance, either riding horses or cars, although they were far away, they could also see that this was someone from the Mo family.

The companion stabbed the prisoner and said, "Why is it only summer, and someone is here at home?" ”

At home, it's about Sishang.

Every autumn, the Mo family will send a group of people to come, and they will also mobilize some people to go back, but now it is summer, which can't help but be a little strange.

The prisoner was about to say some jokes, but he didn't want to turn his head and find a familiar figure in the group of people, so he immediately held back the joke in his mouth, and said to the person beside him: "My sister seems to be inside, I'll go and see ......"

Turning the horse's head, he approached the group and stared at a woman in the crowd sitting on horseback.

It's just that he has his back on his back and is wearing a simple indigo dress, which is similar to the dress of other Mo women. But the sister and brother who have lived together for more than ten years can recognize it even from their backs.

"Sister! Sister! ”

Let Bai Xing speed up, come to the vicinity of the crowd, and shout a few times, the woman returned to China, isn't it his sister and a gentleman or who?

The gentleman smiled like a flower, said to the person next to him, leaned over to this side, looked at the captive, and said with a smile: "It is said that you will grow taller if you change the water and soil, but you haven't grown." ”

The captive smiled with a smile, leaned over to be side by side with her sister, and asked, "Sister, why are you here too?" Aren't you still in school? ”

His sister studied better than him, and belonged to the group of people who could continue to study after middle school, and it is said that it was their little uncle who taught his sister.

The gentleman stretched out his finger and pointed upward, and said with a smile: "Let's look at the stars." Let's make arrangements for your accommodation first, do you have time for the night? ”

Shu Prisoner nodded and said, "Cheng, I'll talk about it in the evening." Sister, you are here, I invite you to eat the mutton here, it is the best. I'll be waiting for you here at the mutton shop in the evening, and you'll find out as soon as you ask. It just so happens that I have something to do, and I'll talk about it in the evening. ”

He was just about to leave when his sister reached out and grabbed his shirt and said, "Wait." ”

He took out a scarf from the saddle bag and a pair of deerskin gloves and said, "The scarf was knitted by your mother, and they all say it's cold here." I bought you another pair of gloves......"

Shu took the scarf and laughed: "Of course I know that my mother knitted it, how can you weave such things as a weaver?" ”

My sister was about to fight, but the captive subconsciously shrank her head back, obviously able to dodge, but she was reluctant to hide, she didn't want to slap it but didn't fan it, but turned into a sister's gentleness, gave him a whole collar, and said: "Go ahead, let's talk about it at night." ”

After saying that, he lifted the reins, sat on his side on the horse, spun around, and hurried back to the group.

…………

In the evening, after settling these things and taking a leave, the prisoner took the money to the most famous restaurant in Gaoliu City.

The food shop was the earliest in Takayanagi City, and it was also the first place to use tools such as iron pots, as well as condiments such as chili peppers.

It was not the Zhao people who opened this shop, but it was a Sishang family, I heard that the Mo family had a foothold here, and I also knew that there were soldiers here, so I saw a business opportunity, and in order to make a profit, I sold the property, and with the second batch of Mo people who went to Gaoliu opened a food shop here.

It's been a lot of money in the past few years.,I'm close to people with Sishang accents.,I also know that those who come are inkers.,I have my own rules and regulations.,It's very strict and you won't give money.,I like it the most.。

The prisoner waited for a while, the door opened, and her sister Shi Shiran came over and naturally sat on the opposite side, this kind of sitting rule was also the first in Sishang.

Shu Prisoner Mi hurriedly called the store and asked for a few special foods from this store.

One portion of boiled mutton, two servings of soba noodles, and a somewhat expensive iron pot stir-fry, and a little wine.

"Sister, how are you at home?"

"Okay. Both Bao and Hui are in school, and their parents are busy with the affairs of the village community. It's you, and there's no news of you when you're gone. ”

The prisoner wanted to talk about his meritorious deeds, but he still didn't say it first, and asked, "Sister, you said you came to see the stars, what does this mean?" ”

The gentleman stretched out his finger and tapped his brother's nose, and said with a smile: "Lie to you, what stars are you looking at?" You don't understand ......."

The captive sighed, knowing that this was true. I have an uncle who is studying with him, and the things he learns are said to be obscure even to the giants back then, let alone him.

So he asked, "You've been studying for the past few years, but how did you get here?" Isn't it...... Can't pass the assessment? ”

He thought of the worst possibility, and his sister immediately raised her eyebrows and said, "How is it possible?" ”

With that, he took out a pamphlet from his bosom, with the logo of an inkman printed on it, which was something that could be published in the world.

After touching it, a proud and proud look appeared on the face of the gentleman, this pamphlet is extremely well preserved, and it is obvious that it is extremely important.

"There's my name on it!"

The prisoner was shocked, if such a booklet could leave a name, it would be a big deal, and hurriedly snatched the booklet, glanced at it, and muttered: "Sine table? ”

He had studied a little geometry and knew what sine meant, and when he opened it, there were some words written on the title page.

After a general browsing, I finally found the names of my uncle and sister in the compilation list below, and after my sister's name, I solemnly wrote a "female".

I opened it and flipped through it, and it was all numbers that made him a little dizzy. He didn't enter the artillery department because he wasn't good enough in geometry, and he was full of respect for these unclear figures.

But after looking at this booklet, it was only a few pages, and I couldn't help asking, "You have done this in the past three years?" ”

As soon as he heard this, the gentleman couldn't help but say, "What do you mean by doing this?" Let the uncle hear it, and he has to beat you. This pamphlet is a special enactment for the sake of it. ”

Hearing Shi's name, Shu Prisoner smiled awkwardly and asked, "Hasn't Uncle been learning with Shi?" Could it be that his knowledge is still done by you students? ”

Speaking of this, the gentleman seemed to think of the days when he was buried in paper and numbers for more than a year, and subconsciously touched his fingers that had been cocooned, sighed, and couldn't bear to recall.

There are some things that she and her brother can't understand, and his brother really can't understand the process.

She went from elementary school to middle school, and continued to study because of her good grades, and after learning the nine numbers of geometry, she caught up with this matter.

Their own uncle took the lead, but they didn't learn deeply. Addition, subtraction, multiplication and division, open squared, open square, simple geometry...... That's all there is to it.

More than 20 people, the uncle took the lead, and he made this table.

At first, it was simple, eighteen, thirty, forty-five, sixty, seventy-two, ninety...... These are all known, and they are the easiest.

They also learned the theorems of double angle, sum, half angle, and triple angle, and then ...... They became human flesh calculations.

The uncle wrote down the equation, and they took the pen and began to calculate.

After more than half a year, the results of various prescriptions and the addition and subtraction of various prescriptions have been remarkable, but they have also become desperate.

With the help of the sum and difference formulas, with the help of the half-angle and double-angle formulas, with the help of the sine square plus the cosine square from the Pythagorean number equals one and so on, from thirty and a half to fifteen, from eighteen minus fifteen to three, then from three to six, and then from eighteen and a half to nine......

Take five decimal places, for more than half a year, as soon as they wake up every day, they calculate the square on the paper, and when they close their eyes, they are all "divide the integer part of the square number from the single digit to the left every two digits, and separate them with apostrophes".

After half a year, I can only calculate three, six, nine, twelve, and fifteen...... All multiples of three are written down to seven decimal places.

But that's the end of it.

If you want to count one or two, you must know one first, but this one makes it difficult.

I thought of a bunch of solutions.

Three times five is fifteen, three times six is eighteen, and six minus five is one.

Three times what one is three, just calculate three and calculate one again.

However, after a long time of calculation, all the solutions that can be thought of point to one problem: solving a cubic equation.

No one will.

Those of them who have been studying for many years can solve one-dimensional quadratic equations, but none of them have ever learned one-dimensional cubic equations, and they can't find a clue to solve them at all.

At that time, Shu Qinghou, who took the lead, and the more than 20 people were ruthless, saying that they would rack their brains to solve the problem of cubic equations, so that the sinusoidal calculation of any angle could be calculated.

But after thinking about it for more than a month, Shi came to give a lecture one day, and these 20 people told them about it, but Shi told these people with a wry smile......

"Want to solve it in a month? If it takes you a hundred years to solve this problem, I am afraid that many secrets between heaven and earth and the universe will be calculated. Don't think about this, use other methods, use harmony, sometimes it may not be the same. Reason must be able to explain and use, but it does not necessarily have to be reasonable. ”

"Whoever can solve the one-dimensional cubic equation can receive a gold thousand Yi and issue the highest medals, but I am afraid that it will not be difficult to leave a name in history for thousands of years in the future......"

These people don't know how many problems are involved, and many people keep this problem in their hearts, so they change the way of thinking about "use" instead of "reason".

So it went from three and a half to one hundred and fifty, and from one hundred and a half to 0.75. From nine-and-a-half to four-five, from four-thirty-half to two-twenty-five, and from two-twenty-half to one-hundred-twenty-five.

Finally, list the equation of three or three degrees, from the sine of 0.75 to the sine between 1.125, and try little by little from the third place.

For example, if the fourth place is taken nine, then eight is taken, and if both are great, then seven are taken...... Until the fourth place is counted should be between four and five, and then the fourth is taken and the fifth place is counted......

This is purely a means similar to the exhaustive method, relying on a simple addition and subtraction multiplier, I was stunned to calculate the fifth place, and calculated that the sine of one degree is 0.01745.

Because this involves the previous numbers need to be more accurate, the previous three and nine degrees need to continue to be counted backwards with openness, which is more work.

A simple 0.0175, these more than 20 people have been calculated for nearly a year, and many people can reach the point where they can open the square when they see a number and mumble a few words.

In the self-deprecating words of the gentleman, these people are the uncle's human flesh......