Chen Yuan was influenced by his teacher Yang Shi and specialized in water conservancy, shipbuilding, and military strategy.
If you want to be proficient in these three, you must have a good mathematical foundation.
Zhu Guoxiang and Zhu Ming, father and son, took out simple numbers (Arabic numerals) and threw out a bunch of four arithmetic symbols. Chen Yuan didn't pay much attention at first, but after only a few minutes, he realized how practical these gadgets were.
He already knew addition, subtraction, multiplication and division, the principles of fractions, and even simple square formulas (the method of multiplying and multiplying and the Tianyuan technique were not invented until the Southern Song Dynasty).
After memorizing the new numbers and symbols, it only took Chen Yuan half a day to practice all the way from elementary school mathematics to junior high school mathematics. It was not that he was a genius, but that he had already mastered those things, so he used a new method
Just to express.
By the second day, geometry principles had begun to be taught.
This is something Chen Yuan has learned a long time ago, but the Zhu family's method is more intuitive and concise than traditional expressions.
The changes and formulas of plane geometry finally slowed down Chen Yuan's learning speed.
During lunch, Chen Yuan couldn't help but say: "Although arithmetic is a miscellaneous subject, it is close to Taoism and will be of great benefit to the family, country and the world."
Zhu Ming has been visiting the library these days, trying to find endorsements from sages for the promotion of mathematics. The first thing he looked through was the history books of the past dynasties, because miscellaneous subjects were among them.
He said at this moment: "Arithmetic is not close to Tao, but it is an integral part of Tao." The Laws and Chronicles of "Han Shu" and "Hou Han Shu" say: The heaven and earth were first formed, and the characters were drawn, and then they were numbered.
Things happen. It is also said: The number is one hundred, hundreds, millions, so counting things follows the principle of fate. "Yi Shu" (ancient Chinese minister) also says: Count the fate first."
Chen Yuan said: "The Book of Han is the words of later generations of historians and cannot be regarded as the teachings of sages. The words of the Book of Yi are enough and can convince the public."
Although some people in the Song Dynasty suspected that "Guwen Shangshu" was a forgery, it had not yet become the mainstream view.
Therefore, the four words "tell his fortune first" can be used as an argument to promote mathematics.
These four words do not mean who should tell fortunes. "Xian" refers to the ancient sage kings. When Yao, Shun and Yu governed the country, they would first establish fortune telling to order everything, and create fortune telling to govern the world's personnel. Ban Gu was still annotating "Shang Shu"
》, saying "mingbaishi" means unifying the law of weights and measures.
Therefore, the promotion of mathematics is not to indulge in miscellaneous knowledge, but to restore ancient times and trace the path of the Holy King!
Ju Ming continued to throw out arguments: "Confucius also said in the "Book of Changes" that in ancient times, people tied knots to rule, and later generations of saints changed them with written deeds, hundreds of officials used them to rule, and all the people used them to observe. Knotting ropes to record things is the number of knots, and saints made them
After the word, it becomes a number. The ancient saint kings used arithmetic to govern hundreds of officials and people. Are we ordinary people more powerful than the saints and sages? Can we abandon arithmetic to pursue the great road and govern the country?"
"Of course!"
Chen Yuan was easily convinced because he was already proficient in mathematics, not to mention that he had "Shang Shu" and "Yi Zhuan" as his basis.
In ancient and modern times, at home and abroad, if you want to spread new ideas, you must use the guise of "retrospection".
The Tang Dynasty had the ancient prose movement, the Song Dynasty had the Six Classics Annotations, the Ming Dynasty also had the retro movement, and there was the Renaissance in Europe. They were all a group of ideological pioneers who used retro to break the constraints and express new ideas. This can be quickly recognized by the public.
, thus forming an ideological trend and being widely accepted in society.
Ju Ming then came to the conclusion: "The great road is in the books of sages. Confucius made it very clear on how to govern a country, and "Shangshu" also made it very clear. It is necessary to 'set up the number of scepters first'. Times have also changed. In ancient times,
, the country was small and the people were small, knotting ropes could be used to record events. During the Three Kings period, the land became larger and the people increased, so numbers were needed. Now our Song Dynasty has a vast territory and billions of people. The previous numbers can no longer bear it.
More complex calculations must be used. Today's sages and scholars have extensively commented on the Six Classics, but no one has improved the algorithm. We should work hard to make up for it!"
This view established the rationality and necessity of improving mathematics, and was endorsed by Confucius and "Shang Shu".
Chen Yuan strongly agreed with this, but sighed: "It is a pity that the imperial examination has abolished the Mingshu Science Examination."
During the reform of the imperial examination in the Song Dynasty, all subjects were merged into the Jinshi subjects, and the Mingshuang subject, which specifically tested mathematics, was cancelled. Now only the Mingfa subject has been restored, which mainly tests law, with a few math questions.
There is no imperial examination, and mathematics is not popular.
Unless someone successfully rebels and forcibly adds mathematics to the imperial examination.
After dinner, the school janitor came to clear away the dishes, and Chen Yuan continued to do geometry exercises.
Zheng Hong came to see him: "Xiangong Zhu, Da Lang, and our ancestors hosted a banquet to invite you two to discuss the purchase and sale of Junzi Tea."
"Okay," Zhu Guoxiang asked, "When will we go to the banquet?"
Zheng Hong said: "It's fine in the next few days, it just depends on which day you two are free."
Zhu Guoxiang said: "Let's do it at noon tomorrow."
"We are waiting for you two distinguished guests." Zheng Hong said happily.
Fatty Zheng has left, but Chen Yuan is still immersed in solving the questions, asking for advice from time to time on how to solve them.
The father and son had golden fingers, and they had clear memories of what they had learned. But they inevitably forgot to teach a certain formula. Chen Yuan asked questions, and they supplemented the formula.
With Chen Yuan's learning speed, he can basically master plane geometry in a month or two at most. After all, he already has the relevant knowledge base.
The next morning, father and son went down the mountain together.
As soon as I walked to the entrance of the academy, I saw two bamboo baskets parked there.
Ju Ming said casually: "A gentleman does not replace humans with animals, just walk down the mountain."
The academy students who heard this remark all praised him as a true gentleman and pretended to be cool without saying a word.
If Ju Ming became emperor, he would definitely not say this again. At most, he would restrain officials not to ride in sedan chairs. Because carrying sedan chairs belongs to the service industry and can solve the employment problem. It does not matter whether a gentleman is a gentleman or not when running a country.
All the way to Zheng's house, the front door was wide open.
The father and son walked in from the front door, and Zheng Lan took his children and grandchildren to greet them in the front yard.
Big businessmen like the Zheng family have already adopted a three-meal system. It was not yet time to eat, so they were invited to rest in the garden.
The early flowers have bloomed, the garden scenery is beautiful, snacks are served, and Zheng Lan brings out the best group tea for them.
Zheng Lan personally added charcoal to make tea and said, "My grandson is naughty. He learned a lot of serious skills from Da Lang in the past. I would like to express my gratitude here."
Zhu Ming smiled and said: "Little officials are smart and not stupid."
"You have a little cleverness, but you don't have great wisdom," Zheng Lan said flatteringly, "You two made a gentleman's tea in a gentleman's way. This is called great wisdom. I admire you so much."
Zhu Guoxiang said: "I have found something occasionally, but it is just a start-up. Wait until next year, the tea-frying skills will be more mature, and the taste of Junzi tea will definitely be better."
Zheng Lan said happily: "I'll wait and see." Then she asked, "How many pounds can I produce this year, and how many pounds can I produce next year?"
Zhu Guoxiang said: "There will definitely be no problem in producing a few hundred kilograms this year, but there is no telling how many kilograms will be produced next year."
"Excellent, this old man is relieved." Zheng Lan stroked his beard and smiled.
In modern tea mountains, the annual output of one acre can reach two to three hundred kilograms, but this is due to the addition of technology.
Converting both mu and kilograms into modern units, the average yield per mu of tea hills in the Tang and Song dynasties was less than 150 kilograms, with very few reaching 180 kilograms. There were more than 300 acres of tea hills in Daming Village. Due to poor management, the average yield per mu
There are only 120 kilograms, all of which are used to make fried tea. The annual output is more than 30,000 kilograms.
Even though good tea in big cities is very expensive, that is the market price after layers of taxes.
The ex-factory price of tea garden owners is countless times lower, and first-class tea only sells for more than 80 yuan per catty. Even if the tea in Daming Village is all first-class tea, and if you don't pay a penny of tea tax, you can only earn more than 2,000 yuan per catty.
This is of course impossible. There are only a small number of first-class teas, and most are second- and third-class teas. An annual income of more than 1,000 guan is enough.
The tea tax had to be paid. After all, Ju Ming was not a bandit. He had to take out part of the tea and go through the tea and horse company procedures like Lao Bai Yuanwai. The officials in Xixiang County are easy to bully, but the tea horse company in Xixiang County cannot ignore it.
It's very troublesome to offend those people.
After deducting tea tax, deducting freight and deducting production costs, the annual net profit is estimated to be less than 1,000 guan.
This is because the cost of frying tea is lower. If you steam tea like Lao Bai Yuan Wai, the net profit of two to three hundred dollars a year will be sky-high - Lao Bai Yuan Wai only makes money by selling private tea. If all tea horses are sold,
Selling will result in a 100% loss because in addition to tea interest, there is also tea garden tax, which is also charged based on the proportion of tea produced.
"Wengweng!"
A girl suddenly ran in, grabbed Zheng Lan's arm, and kept shaking her coquettishly: "The Min family sent someone to invite me to go for an outing on March 3rd. If my mother doesn't let me go, I have to go. I have to go."
Go ahead..."
"Okay, okay, you go, you go." Zheng Lan said with a smile on her face.
The girl said happily: "I want to bring a lot of delicious food, and I'll call Sister Li too."
Zheng Lan nodded and said: "Call everyone, let your brother accompany you, don't let anything happen."
The grandfather and grandson were talking there, and the father and son were also chatting privately.
Zhu Guoxiang whispered: "This little girl, do you think she looks like any celebrity?"
Ju Ming asked: "Who is it like? Dilraba, Gulinaza, or Malzaha?"
"What a mess," Zhu Guoxiang said, "I mean she looks like Li Lizhen."
Zhu Ming looked confused: "Who is Li Lizhen? I have only heard of Li Shizhen."
Zhu Guoxiang was very speechless. After all, they were two generations and had no common topic in this regard. He had to say: "Li Lizhen is a Hong Kong star and has made many good movies."
"Oh," Ju Ming seemed to have his memory opened, "I remembered, did you film a movie "When the Durian Is Ripe"?"
Zhu Guoxiang's face turned dark. He had already heard that his son was making fun of him.
"Isn't it "When Durians Are Ripe"?" Ju Ming was still pretending, "It must be "When Cherries Are Ripe", or "When Bananas Are Ripe"."
Zhu Guoxiang stopped talking.
Ju Ming had a bad smile on his face: "Dean Zhu, you must have seen this movie. What kind of fruit is ripe?"
"You can shut up!" Zhu Guoxiang glared at his son.
This chapter has been completed!