C389

Xue Lang intends to write a series of mathematics books. The first volume is very simple, referring to the first volume of primary school mathematics, mainly to popularize basic knowledge. Therefore, in the eyes of adults who already have a foundation in mathematics, this book is very simple and easy to read.

The king of Qin quickly read it once, holding Xue Lang's "preface" in his hand, thinking silently. Princess Pingyang took the rest of the manuscript paper and looked through it. After that, the sage and the king of Qi looked at it. Qi Wang said: "elder sister What is the purpose of my brother-in-law writing this book? Seems too simple? "

The king of Qi was called Xue lang. after calling, he also looked at Princess Pingyang. Princess Pingyang laughed indifferently and did not say anything. Xue Lang found that the king of Qi seemed to be quietly relieved Cough, poor child!

"Because this book is used for enlightenment, naturally it can't be too difficult," Xue Lang said with a smile

"I see."

The king of Qi no longer asked. After reading the preface manuscript in his hand, the king of Qin handed it to the sage and asked, "what is written in the book of Youyang, mathematics is the foundation of all disciplines, and I don't know how to understand it?"

Xue Lang said: "if we want to explain this sentence, we should start from the division of disciplines. In florists, the subject can be divided into two major subjects, liberal arts and science. Under these two major subjects, small subjects are subdivided... "

Starting from the division of subjects, Xue Lang first explained clearly which subjects there were and what role mathematics could play in promoting it. With that, Xue Lang said: "I'm sorry It can be said that people's life, from the beginning of crying to the ground, has been dealing with mathematics. The date of birth, weight, etc. are calculated mathematically, and by the time of old age and longevity, they are also calculated mathematically. Mathematics is closely related to one's life. "

They all nodded in agreement. Xue Lang said: "this is the aspect of life. In other affairs, mathematics is needed to calculate the salaries and salaries of officers and soldiers, up to the state taxes, bridges and roads. Astronomy, calendars, geography, and knowledge of things can be calculated by mathematics. Therefore, mathematics is the foundation of all disciplines. "

After a pause, Xue Lang continued: "in fact, if we talk about the study of mathematics, the ten classics of mathematics have been done very well, and the depth and breadth of the research are enough. It can be said that it is much ahead of other places in the world at the same time. There are more and more people studying mathematics in our country. Although the ten classics of mathematics emphasize practical examples and despise theory, compared with the wisdom of my predecessors, the knowledge of Mathematics I have learned is not superior to that of my predecessors. What I rely on is only that the calculation method is more simple and convenient. Therefore, I want to write such a mathematical book for enlightenment to make up for the deficiency of the existing books on mathematics. "

Xue Lang explained his ideas clearly, and the sage and the king of Qin nodded. The king of Qin asked, "is it because Youyang adopts the method of numerical calculation that the calculation and statistics of the Ministry of gold have completed faster than expected this year?"

"Yes. I asked people to make two big boards. I used the remaining charcoal sticks as pens to calculate on the boards. It was easier and faster than that. Therefore, the calculation efficiency could be improved

The sage asked curiously, "this year, the Ministry of the people's Republic of China has completed its official duties as usual. Has it been advanced?"

The king of Qin said: "back to my father, when the summer harvest in the past year, the Ministry of people always had to work all night for a few days, but this year it has not. I think Youyang must have contributed to it."

As for the completion date as usual, this is not surprising. The people above will only be more and more demanding. They will move their mouths from the top and break their legs when they run down. Pei Ju is sophisticated and old. Naturally, he is not the kind of person who is eager to make contributions and embarrass his subordinates. He leaves room for his work. After a little thought, the sage understood that this was human nature, and he would not mention it when he waved his hand.

Speaking of mathematics, the sage said, "I have heard Pingyang say that the reason why you are so erudite in Youyang is related to the schooling system of florists, isn't it?"

Xue Lang said: "the sage's words of erudition are not worthy of my honor. However, when it comes to the schooling system of florists, there is something to be desired. The school system of flower growers starts at the age of three, goes to kindergarten, starts primary school at the age of six, goes to primary school for six years, junior high school for three years, senior high school for three years, and then four years for University. Before the University, we all studied the same courses. After the University, we began to divide the subjects and carry out more professional and in-depth study. "

The sage bent his fingers and said, "isn't it necessary to go to school until the year of the weak crown?"

Xue Lang said: "back to the sage, yes. Therefore, I never went to university. What I learned was mostly from books or specially asked teachers to teach me. What I learned was complex and complicated, and there was no profundity of professional university. However, although the system is good, it is not suitable for the Tang Dynasty. "

The king of Qin said, "what Youyang said is very true. Since the founding of our Dynasty, taxes are limited, and the world is not peaceful yet. Military pay is the largest expenditure. Therefore, although this policy is good, there is no capital to implement it. "

Xue Lang nodded and said: "as Erlang said, education can only be led by the state. However, one is limited by money and the other is limited by teachers. To develop education, both are indispensable. "

Among the four ancient civilizations in the world, only China has been handed down, which is inseparable from the Chinese tradition of attaching importance to education and inheritance. Because of this custom, civilization can be inherited and continued from generation to generation. When China was poor and destitute, there was a policy that contributed greatly to the development of education, that is, the free policy for normal students, which trained many teachers for compulsory education.In fact, the teachers trained in this way are not enough. In many remote areas, many people become substitute teachers for those who fail to enter the university after graduating from high school or junior high school.

Everyone knows the importance of education, but the conditions are limited. In the Tang Dynasty, such a policy was not allowed at all.

All of you here are not straw bags. Even the king of Qi can understand the advantages and disadvantages. The sage sighed and said, "governing a big country is like cooking a small dish. Although I have ambition, my conditions are limited. Not all good policies that benefit the country and the people can be implemented. What a pity! It's hard to start a business and it's even harder to keep a business. Now that the foundation of our country has been established, it depends on future generations. "

"Children lead training!"

Besides Xue Lang, the king of Qin, the king of Qi and Princess Pingyang all knelt down. Xue Lang looked around and knelt down. He made the sage laugh. His depression dissipated in an instant. He asked with a smile, "Why are you kneeling, Youyang?"

Xue Lang scratched his head silently in his heart and said, "I will try my best to help the sage."

The sage laughed, got up and pulled him up. He praised him and said, "it's good if you have this heart."

Next, they discussed Xue Lang's mathematics book together, and they all thought that it could be finalized. Seeing this, Princess Pingyang sent the manuscript back to Chang'an for printing.

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