The next day, Li Jin went to the academy refreshed.

He had previously told Wan Jiaoyu that he also had his share of the 40% of the net profit margin, so at least sixty taels of these three hundred taels had to be allocated to Wan Jiaoyu.

But giving money directly in person is not in line with the habit of scholars. Li Jin discussed the date with Wan Jiaoyu and planned to visit him another day.

In this way, only two hundred and forty taels are actually available.Li Jin doesn't have the habit of sitting and eating in the air. He plans to spend two hundred taels to do business.

Whether it is buying some fields, hiring people to farm, or buying some remote areas in the inner city but better than building a house in a quiet open space, it is a good plan.

However, if Li Jin really intends to do business directly, then he has to personally visit to understand the market.

Everything has to be done step by step, the big fat man can't eat a bite.

After the compilation of "Nong Sang Suan Jing" was completed, the prefect also assigned more tasks to Li Jin.

But after this battle, Li Jin himself had a lot of interest in the'Adapted Sutras'.

When taking the county exam before, he thought about compiling an introductory math book independently.

After all, "Nine Chapters Arithmetic" is still too profound for those young Mengtong.

When Li Jin visited Wan Jiaoyu, he talked about his thoughts. After all, if he really planned to do this, he might have to trouble Wan Jiaoyu for proofreading in the future.

Wan Yun's complexion at home is quite mild, unlike in the academy, who has always been stern.

Perhaps Li Jin is similar to his life experience, and his age is not too different. He also feels a lot of sympathy for Li Jin.

Hearing Li Jin said that "Nine Chapters Arithmetic" was profound, Wan Yun smiled and said: "Are you the county and government test that Xin Chounian participated in?"

Li Jin said: "Exactly."

"Then you still remember that the prefect presided over the compilation of a book of "Arithmetic·Detailed Explanations", which was completed by the other three teachings of our mathematics department."

When Li Jin heard this, he was immediately impressed. At that time, he read few books and only had two mathematics books in his hand.

Before the county test, I was immersed in studying, and then compared this "Detailed Explanation", and thoroughly understood "Nine Chapters of Arithmetic.

Li Jin smiled and told the scene he was studying at the time, "Thanks to this book."

Wan Jiaoyu said again: "But I heard what you meant, not to continue to comment on mathematics, but to independently compile enlightenment books on mathematics?"

Li Jin replied: "Students have this plan." Then he took out a thin booklet with no six pages stitched and presented it to Teacher Wan. "This is the outline listed by the student. Please also ask for advice."

The first one Li Jin listed was the multiplication table. This has already been the "Nine-Nine Multiplication Gesture", but it is arranged from high to low. In other words, Meng Tong recites these formulas, and the first sentence is "Nine-Nine". eighty-one'.

Li Jin intends to reverse it, starting with'one by one get one', but he doesn't know whether this method is feasible or not.

After all, this is about Mengtong's mathematics enlightenment.

After Wan Jiaoyu read it, his expression was indifferent at first. After all, he had also met many colleagues who had Li Jin's ideas, but the books he compiled were all the same, and there was no value.

Suddenly, his brow wrung up, his face thinking.

Li Jin has been sitting in place drinking tea, quietly waiting for Wan Jiaoyu to reply to himself.

Wan Jiaoyu read a thin booklet for an hour.

After reading it, there was nothing but admiration and appreciation in his eyes, and he said, "Whimsical! But it's amazing!"

Li Jin breathed a sigh of relief. He thought that his bold idea would be directly criticized by Wan Jiaoyu.

But Wan Yun changed his words, "Li Jin ah Li Jin, your idea is too bold. Tomorrow I will introduce Shan Chang for you. I can't do this."

Li Jin's heart hung in his throat again, and he felt that he was too hasty.

It would be nice if he was a little prestigious, and it would be considered enlightenment.

But he doesn't regret his decision. It is important to be safe. His body is not yet weak, so he must have the enthusiasm of young people when he is young.

If you have any idea, you have to boldly put it forward, or else you will always think about the past and the future, and you will find that when you are old, there is no "young frivolous thing" that can be missed.

The mountain leader looked at Li Jin's outline, pondered for a long time, and only gave him one sentence: "Just do it."

Li Jin is now in the hospital. If Shan Chang feels that this idea is not good, he will not let Li Jin do it.

But even Shan Chang did not give Li Jin any guarantee on the spot.

But his sentence is enough.

One hundred years later, someone saw the origin of "Meng Xue Suan Jing" in the memoirs of Wan Yun's old age from the Shang Shu of the Ministry of Industry, and translated it into the vernacular: "Shan Chang said to him that you can do it, and he will independently compile it according to his own ideas. This concise and easy-to-understand mathematics.At that time, he was just a young boy who had just left the village, and he was not as weak as the champion.'

Compiling books and visiting the fields and fields had to be done by himself. Li Jin was alone and lacking skills, so he temporarily put aside the idea of ​​buying land in Fucheng.

Put this money at home and save it for a few months. After you finish the college exam, you will have a reputation and you will be rent-free if you buy land.

Before Li Jin went to Ningxing Academy, the first place in the assessment at the end of each month was'Feng Shui turns around, and this month turns me into it'.

But after Li Jin came, everyone looked at the first Li Jin in the first month, and felt that the name was quite unfamiliar. Someone in the crowd asked who this person was, and only a few people answered, “This year’s government trial is the first one, follow me Tested in the same year'.

In the second month, seeing Li Jin's name occupy the first place, everyone said,'This man is so lucky, and the policy argument is so powerful, he must have just memorized this paragraph before the exam.'

In the third month, everyone was silent, and then they all cheered up to see who was the second.

Since Li Jin became famous in the academy, there are many people who want to make friends with him, and some even have a face in Fucheng.

Li Jin also took the right time to participate in some literary meetings, but most of the time he was in the Department of Mathematical Studies, so he did not accept many invitations.

As Li Jin became more and more famous among scholars in Fucheng, the examiner of the previous hospital examination also noticed him.

But the examiner's mind was not so bad, and the prefect to demote the student from the'A class' was a warning to him.

He himself was a Confucian-teaching Confucian official, and it was already a shame to use his hands and feet in the official examination.

The prefect gave him face and didn't deal with him publicly, and he knew how to accept it.

However, the second-class student was very upset about this, because his test result was'second-class' and he could only be placed in the second class.

However, he also has real talents, and he can enter Class A if he is ranked in Class A three times in a row.

In the fourth month, this fellow named Lu Changdongdi finally got his wish and entered Class A.

Next, he thought he could compete with Li Jinyi.The official test ranking has been unable to recover, but he has to prove that he is the most powerful one.

Not to mention that Li Jin talks a little, but in the lecture, he quoted the classics and the data were clearly listed. Few people could argue with him to the end.

By December, Lu Changdong had forgotten what he meant, but whenever he could argue with Li Jin to the end, he would laugh like a two hundred catty fat man after school.

Lu Changdong thought, that incident was always the fault of himself and the teacher, and Li Jin was completely innocent.

Besides, Li Jin also used his strength to convince Lu Changdong to lose.

Just after Lu Changdong thought that this was Li Jin's full strength, "Nong Sang Suan Jing · Simplified Edition" suddenly caused a sensation in the entire academy.

This book was originally in accordance with the requirements of the prefect. The head of each village bought at least one set to return, and arranged the farming time and methods for the villagers.

However, there are many arithmetic questions which are closely related to the imperial examination.

There was a student in the college whose father was the head of their village. He took advantage of the rest time to return home and saw his father studying "Nongsang Mathematical Scripture · Simplified Edition".

The student smiled directly at the time: "Father, this calculation is very difficult for me. When will you have to study."

Before the voice fell, he was beaten by his father with the sole of his shoe.

His father asked angrily: "Difficult? This is a question that I can understand. You tell me that it is difficult? Are you still taking a test of Xiucai like this? Just come back and enlighten the children in the village!"

The student thought his father was joking, took the book and looked at it and was shocked.

"Father, don't beat you up, it's different from my arithmetic book!"

In the end, he took out his arithmetic book, and his village chief father looked at the slurred explanations and found out that the child did not lie.

But can I still apologize to my son?

The village chief said: "You people who test for talents should just learn a little harder and return my book to me."

"Father, where did this book come from? Can I buy it? If I can't buy it, let me copy or copy... Li Jin?!"

Later, after the introduction of this student, most of the students in Class B bought a set and came back to study.

The arithmetic questions in the last month-end assessment before the new year also happened to be changes in rainwater, drainage irrigation, drainage time and drainage volume.

Algorithms are not difficult, but it is difficult to understand and figure out ideas, and many students in Class A have fallen into it.

If it weren’t for the academy’s rule that three consecutive top rankings were required to change classes, otherwise Class A had to lay off more than half of its staff.

After Lu Changdong got the news, he lost his temper.

The idea of ​​friendship with Li Jin has never been so strong.

But it was already in the twelfth lunar month, and the Chinese New Year was about to be celebrated. During this period, there would be a ten-year holiday. Lu Changdong didn't see Li Jin in the academy, so he could only give up.

Li Jin happened to be stuck in the last chapter of the compilation of "Meng Xue Shu Jing". He frequently visited Wan Jiao Yu to discuss the diversity of solutions.

After reading it, Wan Yun praised him, "Each question lists at least three ideas, Li Jin, your book is absolutely amazing!"

Li Jin said modestly: "The instruction is absurd."

There are not many people in Wan Jiaoyu's family and no wives. The Chinese New Year is a bit deserted, but he doesn't care about these things. He just said: "Li Jin, after you finish writing, I will just take advantage of this time to proofread for you, and then present it to the mountain leader for viewing.

"Thanks for the instruction."

When Li Jin sent the final draft to Wan Yun, he also brought a lot of goods, including Qin Muwen's glutinous rice chicken and steamed pork ribs.

Wan Jiaoyu simply kept him for dinner, and when he had the ribs, he said, "This craftsmanship is truly amazing. You are so lucky, kid."

Hearing his mention of Qin Muwen, Li Jin's eyebrows were softened by the wind and snow, and the corners of his lips smiled unconsciously.

"It is indeed my blessing. If you are free, my wife and I will welcome each other."

Wan Jiaoyu, who has never accepted any invitation, agreed in one mouth: "Okay, I will definitely go."