With land, you can start to build a house, which is much better in ancient times, it does not need the approval of too many departments, and there is no need to declare the use of land, as long as you get the title deed, it is your private property, as long as it is not too excessive, it is not illegal to toss casually.

Xu You unexpectedly handed over the specific planning and construction matters to Lu Shuang, and Yan Shujian handled it collaboratively, from the design drawings, hiring craftsmen, purchasing materials to transportation, breaking ground, and starting many trivial matters, he didn't ask.

Employing people is not suspicious, suspects do not need to be used, and their subordinates have more training and training, which is good for their growth, if they encounter setbacks and difficulties in the future, they can be sent out to take charge of themselves, so that no one can use it!

The subjective initiative of Frost was fully mobilized, and with the four subordinates assigned to her, she traveled back and forth between Bijia Village and Jingyuan, from morning to night, almost so busy that she couldn't even see the figure. The winter solstice is also busy with the expansion and improvement of the intelligence network everywhere, and it is even more elusive, seeing the beginning and not the end, leaving the autumn equinox alone to accompany Xu You, sometimes it is inevitable to seem lonely and boring.

"If you feel bored, you can go to Bijia Village with Lushuang to have fun, okay?"

Autumn Equinox tilted his head, thought about it very seriously, and said: "No, I don't have the talent like my sister, I can't remember the money and accounts clearly, and I can't count it, and I will cause trouble for her if I go." It's good to accompany Xiaolang like this, if even I leave, Xiaolang won't be served by anyone! ”

"Silly girl!" Xu You rubbed her hair bun and said, "I have hands and feet, and I don't need to be served." But you're right, it's not okay to not settle accounts for many things. ”

In the following period, he closed his door and wrote a basic textbook equivalent to the first grade of mathematics in his previous life, just a dozen pages, explaining the counting method of Arabic numerals, and the four rules of operation of addition, subtraction, multiplication and division, and then taught the autumn equinox learning by hand.

The autumn equinox has not learned the nine chapters of arithmetic and other arithmetic classics, which is equivalent to a blank piece of paper to learn from scratch, in addition to the Arabic numerals just came up to feel uncomfortable, addition, subtraction, multiplication and division is very fast to learn. Within a few days, she learned the addition, subtraction, multiplication and division of two digits from within ten, she has always been clever, but she abides by the duty of a slave, not as conspicuous and exposed as the winter solstice and frost.

After another ten days, the progress of the autumn equinox was advancing rapidly, and Xu You began to try to teach her to define theorem formulas, such as the exchange of addition and multiplication, the associative law, and the quantitative relation. Just when the frost came back to report the progress of the project, Xu You listened to it in his ears, walked the silver snake with the pen in his hand, wrote four big characters, and suddenly smiled: "Frost, autumn equinox, I will test you with a question, if a craftsman is seven dollars a day, and fifty-six craftsmen spend twenty-eight days to build a paper mill, how much is the total salary?" ”

Lu Shuang was stunned, she didn't understand what Xu You meant, but she still joked: "This is a little difficult to solve, I just happened to have a calculation chip, maybe you can try it......" She was in charge of accounts in Jingyuan before, and this kind of common thing is naturally rare, generally two hundred and seventy-three bamboo chips are a bunch, put in an calculation bag, and use it to calculate various calculation problems.

Xu You smiled and said: "Okay, you compare with the autumn equinox, whoever calculates it first, I have a reward!" ”

She knows a lot about the autumn equinox, knows that she doesn't know how to calculate, and she hasn't even fiddled with the calculation, how to win herself, and said: "There's no need for the competition, right?" Besides, my sister didn't count the chips, so let's just take it as a joke! ”

"It's okay, the autumnal equinox doesn't need to be counted." Xu You handed over the brush and said, "She uses the pen to calculate!" ”

"Pen calculation?"

Walking on the frost and ice and snow is smart, and immediately understands that Xu You must have taught the autumn equinox some wonderful method, and intends to let her come to the school to take the autumn equinox to learn. Since it won't hurt everyone's face, he didn't shirk it at the moment, pursed his lips and smiled: "Then I'm going to do my best, if I lose the competition later, sister, don't laugh at me." ”

Autumn Equinox blushed and said, "Where will I laugh at Sister, besides, I will never win!" ”

"Not necessarily! Well, no matter who loses, don't cry your nose! ”

Lu Shuang smiled and glanced at Xu You, if there is immortal magic in the world, then Xu You must be a person who can perform immortal magic, as long as he is there, it is not surprising that anything strange happens. She untied the calculation bag from her waist, poured out the bamboo chips, and stacked them neatly on the left hand side, and sat down with a pen after the autumn equinox arrived, Xu You snapped his fingers, and the shouting began, and then he didn't care how the autumn equinox was calculated, but walked behind the frost, and watched her fiddle with the calculation chips curiously.

Since there is a count, the algorithm can be said to be a collection of the wisdom of the Chinese nation through the ages, don't look at a bamboo stick is inconspicuous, but it abides by the decimal system, compared with other civilizations, in an absolute leading position. For example, the ancient Romans did not have a place value system in mathematics, the ancient Mayans used the decimal system, and the ancient Babylonians used the hexadecimal system, which made the notation and operation extremely cumbersome and complicated, far less simple and convenient than the decimal system.

From left to right, first put out seven, and then put out thirty. There is a set of operation formulas for the algorithm, the single digit is vertical, the ten digits are horizontal, the hundred digits are vertical, the thousand digits are horizontal, and so on.

However, one of the biggest drawbacks of this algorithm is that it is too time and space consuming. The greater the difficulty of the calculation, the more calculation chips are needed, the larger the space to be placed, and the calculation process of the previous step cannot be retained in the movement, teaching and learning are very difficult, so it is gradually abandoned by the times.

The frost is still fiddling with the calculations, carefully calculating the next placement, but the autumn equinox has already been calculated. It's just that she is extremely lacking in confidence, and when she looks up, she sees that she is still calculating the problem, and she is not sure whether her answer is correct or not, and she checks it again from beginning to end, much like the mentality of a scumbag who has just become a scholar.

After repeating this three times, and making sure that the problem was solved exactly according to the method Xu You taught her, she raised her hand timidly and said, "I'm done!" ”

Raising your hand to answer questions, raising your hand to ask questions, and raising your hand to express your opinions are the rules that Xu You began to implement in the trilogy very early. The autumnal equinox is his closest person, and if it weren't for the temporary teacher-student relationship these days, he wouldn't have to be so careful when he spoke.

She was only halfway through the calculation, and she only knew a little about the calculation algorithm, which was enough to meet Jingyuan's daily expenses, but she took a little effort to do these arithmetic problems, and she looked up in amazement when she heard it, and said, "It's over?" So fast? "She and the autumn equinox are like sisters, there will be no strong desire to win, it doesn't matter if you win or lose, but I didn't expect to lose so much, lose so badly!

But the more this is the case, the more curious I am about what Xu You taught the autumn equinox that made her cognition of counting leap and bounds to such a realm?

"Don't talk about the result yet, let me count it in pairs after I finish the math and see if it's the same?"

After waiting for a while, she almost ran out of bamboo chips, and filled most of the room before she came to the final answer, she playfully took a pen and quietly wrote it on the paper, let the autumn equinox follow suit, and then opened it at the same time, one of the two white pieces of paper said 1976 yuan, and the other said 10976!

Xu You applauded and said, "Not bad, not bad, both of them are right!" ”

The starry eyes of the frost were full of doubts, and said, "Sister, what you wrote is ...... What a strange word......"

The autumn equinox was written in Arabic numerals, and of course she did not recognize it, and although she was fluent in many Chinese, she had never seen the ghost-like symbols written on the autumn equinox on paper.

Autumn equinox said: "This is what Xiaolang taught me, it's very easy to learn, I didn't expect it to be very useful!" ”

Lu Shuang looked at Xu You, his heart was confused and blurred, Xu You pointed to the four big characters he had written on the paper, Lu Shuang leaned over to look at it, read it out of his mouth, and said: "Tianjing Jade is ......."

"I call this kind of counting words Tianjing words, and the method of operation is similar to your calculation algorithm, but it is more convenient and faster to count, so I call it jade calculation. It is of great significance that it can greatly change the current algorithm, but it has just taken shape, and it will continue to be improved and deepened in the future. If you're interested, I'll teach you ...... when I'm done with this section."

"Okay, I want to learn!"

The shock in the heart of the frost was incomprehensible, she looked at the calculation process of the autumn equinox, a few simple heavenly scripture words, up and down, left and right, it seemed that according to some unique rules, a few strokes, in a short moment, you can get the final answer. That's not the most important thing, the most important thing is that the answer is consistent with what she has worked on with time and painstaking calculations, what does this mean? Explain that Tianjing Jade is a completely feasible algorithm, how can this not make people excited?

Xu You is not very interested in this kind of elementary school math problem, but to change people's fixed thinking, you need to go step by step, from shallow to deep, from easy to difficult, and it is unrealistic to do calculus when you come up. And Arabic numerals are not acceptable to everyone, and the promotion needs a slow process, maybe ten years, fifty years, maybe several generations.

This is not in a hurry, he is not so naïve to bring changes to the whole world immediately, the first thing he wants to change is Jingyuan, and those relatives, tribes and friends who follow him to survive in this troubled world!

Because Xu You made a hindrance from it, Liu Yan's plan was only half successful, and the nine million money that Jin Guan bragged about was only three million, and Luo Baiheng and others, who were pulled away by Xu You, were all big customers, so they regarded the gold fang at the foot of the mountain as hatred, and every time they saw it on the mountain, they were like a fish in their throats, and their teeth were itching. In particular, I learned that the scale of the gold workshop has been expanded, and ten papermaking lines have been opened, and the daily output has steadily increased to 50,000 sheets. In addition, the recruitment problem has also been improved, since Xu You participated in the Yaji, was ordered by Dazhongzheng, although it is still a white dress, but in the eyes of ordinary people has been unspeakably expensive, those farmers and craftsmen who were afraid of the intimidation of Tang Zhiyi and other rangers and did not dare to apply for the recruitment also pretended to have the courage to work in the gold workshop.

Once manpower, material resources, raw materials and production technology cannot become shackles, what can stop the crazy growth of the gold workshop?

Liu Yan touched his chin and thought about this question seriously. Jin Guan was behind him, as if he had seen through his thoughts, and said lightly: "Some people think that he has won, but in fact, he has only won now, and when that day comes, no matter how much money he has earned, it is not ours?" ”

"Yes, we have won today and lost tomorrow. Between victory and defeat, who can tell? ”