Why do you need to use abacus to record accounts using the numbers of Ala in your previous life? Simply speaking, in terms of pasture statistics, in addition to the number of various livestock, there is also a sum of them. That is, convert all livestock into cattle and horses, whether it is three sheep or four sheep as one cow, the final total is the number of cattle. In this way, it is easy to calculate how much area the ranch can be stored, how much grass should be prepared in winter, and how the performance of the herdsmen is. This principle is the same as the government financial accounts of the court. Using two units of Guanshi Pi is the same, that is, Yiguan money, a piece of silk, a stone of grain and a tael of silver is roughly considered to be equal in value, and it is a fiscal unit, thereby calculating fiscal revenue and expenditure.

Calculating fiscal numbers by summarizing is a method that has to be used in underdeveloped statistics and mathematics, but it is actually very inaccurate. For example, the market price of one tael of silver vs. money, from insufficient to two jin, and is different every year. Not to mention the price of grain, rice, wheat and millet, and the price of silk is the same. The roughness of this unit alone causes countless wastes. Without such calculations, the current system and manpower cannot complete fiscal statistics, and various fiscal policies are even impossible to talk about.

This is the case when Yongcheng County reports to the prefecture's account books. The grain tax is calculated by two pieces of stone. The physical goods are given a number, and the total number of accounts is another number. If the two are actually sorry, the deduction loss must be added.

Du Zhongxiao hated the money. Not to mention ordinary people, specialized financial planning officials often make mistakes, and the fiscal budget and financial audits are even more misleading.

If one day you have the opportunity to preside over the finances, you must eliminate this disadvantage. Because the amount of fiscal waste caused by statistical units, systems, habits is very amazing, and it is impossible to avoid it in ancient and modern times, both in China and abroad. It is just that advanced systems and statistical methods can reduce this proportion, which is equivalent to increasing fiscal revenue. What's even more terrifying is that this error will accumulate. As time goes by, seeing the numbers on the books continue to increase, the actual real materials that can be used, but I don't know where it is.

A simple classification statistics and summarization require the most basic knowledge of the four-point calculation, otherwise the statistics will be incomplete. What’s ridiculous is that fewer people in this era than those who can write poems and lyrics. It is rare to be able to calculate the addition and subtraction of tens of thousands or hundreds of thousands of yuan correctly. Du Zhongxiao also wanted to start a calculation, but who will teach, what teaching materials to use, and where to find students must start from scratch.

Mathematics is the foundation of everything. In this era, the Song Dynasty was at the forefront of the world in the research of mathematics, but in terms of popularity, it was not better than in some commercially developed regions. Du Zhongxiao did not need to bring any advanced mathematical principles to the world. As long as he compiled the mathematics knowledge of elementary and junior high schools in his previous life into textbooks to teach more people, it would be an extraordinary achievement and might create a scientific revolution.

Luo Jing was the first person Du Zhongxiao met when he came to this world and was gifted with numbers. He didn't need to become a mathematician. As long as he could learn the basic four-point operations, be able to use abacus skillfully, and understand the accounts, he would be an amazing talent.

After processing some official documents casually, Du Zhongxiao returned to the Houya and drew the form he had just given to Chen Qin in the study. The statistics of this era actually used blank paper, and the person who filled in it didn't need to know the words, just know what to write in the blank space. This kind of statistical data is extremely difficult to use, and the audit and account check are extremely complicated. The people who can sort out accounts are often geniuses. For example, the smart people such as the former prime minister Ding Wei can quickly draw numbers from these piles of papers rely on their extraordinary memory and mental arithmetic ability. No ordinary people have that ability. Du Zhongxiao can do it, and he will not be satisfied even if he is desperately a Jinshi. How can he win the top five.

The most familiar knowledge about accounting that Du Zhongxiao could remember in his previous life was the double-entry accounting method. He didn't know the specific content, but from this name alone, he roughly knew what was going on. It was nothing more than recording income and expenditure, entry and exit, etc., so that the number could be clearly seen and traced. He tried to draw a fifth-level Ding book form, and Du Zhongxiao laughed himself. In fact, this thing is very simple, just a way of thinking.

Occasionally, I remembered the geometry knowledge I taught Tao Shiqi a few days ago, which made him extremely troubled by the problem of square cutting. Du Zhongxiao had a clever idea. Can square cutting be made into tables? Not only square cutting, square cutting, logarithm, trigonometric function and other mathematical knowledge can be made into tables. Isn’t this what I taught in primary and junior high schools in my previous life? These things are like rulers and compass, and are the basic tools of mathematics.

Just when Du Zhongxiao was busy like a child, Tao Shiqi came to ask for a meeting.

After entering the door and after the salute, Tao Shiqi secretly glanced at Du Zhongxiao's desk, and crossed his hands and said, "Official, what kind of forging hammer you asked the young man to make? The young man has made it, and the craftsmen said it is good. If the official has free time, you can go and take a look."

Du Zhongxiao took a piece of paper and stood up and said, "Okay, take me to see."

When he walked on the road, Tao Shiqi couldn't help but: "Official, what is on the piece of paper you brought? Do you want to teach me?"

Du Zhongxiao smiled and handed the note in his hand, saying, "It's not about teaching you, but about taking the test. A few days ago, you have learned the method of "Sutra" but you are not proficient. You count from one to one hundred on this paper. You can fill it in the prescription and practice it more."

Tao Shiqi took the paper in his hand, and saw that it was densely packed, and he couldn't help but complain. The method of squared opening was found in the "Zhoufeng Academic Sutra", and various later calculation books were involved, and the methods were very mature. Du Zhongxiao's intention was to let Tao Shiqi be familiar with the mathematical calculation methods he taught him, especially the method of writing calculations, and by the way, list the square tables of less than 100, which can be supplemented slowly in the future.

To be an engineer, it is not enough to rely solely on skillfulness. It must be simple geometric knowledge and computing ability. From the beginning, Du Zhongxiao took the path of skilled craftsmen doing industry, but to introduce preliminary engineering, so he naturally had to lay a solid foundation.

Fortunately, Chinese mathematics has a long history and has many names. Most of the mathematical knowledge below junior high school in the past has been scattered in various math books. It is just a lack of systematic sorting, axiom theorem system, and a lack of symbolic systems, which is not conducive to teaching or learning. Du Zhongxiao plans to find a group of talented people to sort out this system and form a preliminary mathematics subject. As for what step he takes in the end, it is not his concern. We must believe that humans never lack geniuses, but just lack the soil for the growth of geniuses. It is enough to open the door and pave the way.

As the two walked, they said that they arrived at the construction site in a short while. Since the steel was refined a few days ago and thirty well-developed steel knives, they have never stopped. But now they no longer build steel swords, but instead create various agricultural tools and other workpieces.

In addition to the twenty knives sold to Peng Xinshu, Du Zhongxiao also left ten, which were counted as samples. Two days ago, he only sent one to the state to the new magistrate Xia Shu, which made him admire him for a long time. With that steel knife, Xia Shu is now very supportive of Du Zhongxiao's various careers, but only has strict requirements on various business and account records, and requires him to be given to him regularly. Xia Shu's attitude made Du Zhongxiao wonder, and he didn't know what kind of person he was.

As soon as he entered the court, Tao Shiqi took Du Zhongxiao to a forging hammer. He saw a standing forging hammer falling down constantly, without anyone swinging the hammer. The two craftsmen in front of the hammer were each guarding an iron furnace and were building a sickle, busy.
Chapter completed!