In the Song Dynasty, there was no law or order.

"Teacher Zhao, everyone is sitting at the entrance of the village over there."

Fan Zhongyan felt frightened every time he heard Zhao Jun's jokes about the Song Dynasty. When he saw Zhao Zhen and the others coming over, he hurriedly said, "Teacher Zhao, if you have nothing to do, would you like to go over and chat with us?"

"Okay, Uncle Nima, please help me over."

Zhao Jun agreed.

He liked to show off in front of the villagers. First, he seemed to be knowledgeable and respected in the village in the future. Second, he wanted to interact with the villagers more, which would facilitate his future teaching tasks.

After all, he heard that the children in Daliangshan were not in a good situation. Even with the nine-year compulsory education, many parents would not let them go to the third or fourth grade.

So if he could hang around in the village more and accumulate some prestige, it might be easier to visit the families and persuade them to study in the future.

However, Zhao Jun's efforts were obviously in vain, just like his teaching of the universe class, because no one would drop out of school here.

At this moment, Zhao Zhen, Lu Yijian and the others had already gone to the Guanjia Hall and summoned all the actors to their positions. After a while, Fan Zhongyan helped Zhao Jun and walked over slowly.

In order to simulate the village road in the mountain village, they even shoveled away the originally flat gravel path in the back garden and replaced it with an ups and downs rammed earth road, which was covered with a layer of dust and some gravel.

Guanjia Hall is more than 100 meters away from Zhao Jun's hut. Zhao Jun had to go up and down the hill twice. He stepped on the uneven ground and had no doubt that he was not in a small village deep in the mountains.

"Teacher Zhao is here."

"Welcome Teacher Zhao, have you eaten?"

"We are planning to go back to cook, do you want to eat something?"

"Teacher Zhao, come here and sit down. I've saved a seat for you."

"Thank you, thank you, I just ate, you are busy."

Zhao Jun responded repeatedly.

"Then we will leave first, go back to cook, Teacher Zhao, please sit down."

The old mother actors have arrived long ago. The entrance of the village is known as the intelligence center, and a bunch of old men and old ladies gather. Now it's time for dinner, and the old woman just wandered in front of Zhao Jun and found an excuse to leave.

Otherwise, every time he came to the village entrance to chat, there was always a group of old men surrounding Zhao Jun. There was not even an old lady in the village. Even a fool would think something was wrong.

It was dinner time, and the old ladies found excuses to go back to cook, leaving the old men to continue waiting. It was normal for them to be called to dinner by their families.

This was a play rehearsed by Yan Shu. In order to hide it from Zhao Jun, he took great pains.

"Teacher Zhao, come and sit here."

After Lu Yijian waited for the old women to leave, he warmly invited Zhao Jun to sit in the corridor outside the Guanjia Hall.

This chair is an ordinary backrest chair, which is very common in rural areas and has been circulated since the Song Dynasty.

Zhao Jun was not polite. He fumbled for the chair, pulled it back a bit, and then sat down and asked with a smile: "Thank you, I wonder who you are?"

"I"

As soon as Lu Yijian opened his mouth, he regretted why he was so enthusiastic.

It was too late to regret now. Seeing that Zhao Jun was waiting for his reply, he had no choice but to bite the bullet and use the old southwestern Mandarin to speak stiffly and vaguely: "I am Mamarzaha"

"Ah?"

"Mama Kabaka."

"What's your name?"

Zhao Jun still couldn't hear clearly. The other party was old and mixed with local dialect, so he spoke too vaguely.

"Ma La Ge Bi!"

Lv Yijian clenched his fist and gritted his teeth. This time his pronunciation was much clearer.

Zhao Jun was stunned: "Why are you cursing?"

Lv Yijian: "."

Everyone: "."

Fan Zhongyan had to say: "Teacher Zhao, he said his name is Ma Le Ge Bi."

"Uh"

Zhao Jun was dumbfounded.

Yesterday, he was wandering around the village with Fan Zhongyan and Yan Shu. Villagers from all walks of life came up to introduce themselves. At that time, there were many people and he didn't hear Lu Yijian's self-introduction clearly. Now he heard this name, so he was stunned.

However, after being shocked, he quickly realized that he seemed a little rash, so he laughed dryly and said, "Ahem, the name of Maleshu is really unique."

"Hehe."

Lü Yijian could only laugh dryly in response.

Zhao Zhen, Wang Zeng and others were so happy that they almost laughed out loud.

Fan Zhongyan quickly changed the subject and said, "What were you talking about just now?"

This is to start today's topic.

Let Zhao Zhen and others choose to talk about politics today, or spoilers.

The so-called talking about politics is naturally to let Zhao Jun help think of ways to solve the government affairs.

Such as the Li Yuanhao problem, the three redundant problems, the Qingli New Deal problem, the Jiaoyin method problem, etc., are all in this series.

Spoilers are about history.

In the past month or so, Zhao Jun has spoiled a lot of things, including the future ending of the Song Dynasty, the situation of the Yuan, Ming and Qing dynasties, etc.

It's just that they only know the order later, and some major events will happen, but the specific content is still unclear.

After all, there are countless things recorded in the history of the Song Dynasty, the history of the Yuan, Ming and Qing dynasties, big and small. How much can Zhao Jun say? Only some important things can be mentioned, and the details in between can naturally be skipped.

Originally, gossip and spoilers were a daily routine, but Zhao Zhen did not expect that today he listened to Zhao Jun's math class, remembered the importance of science, and decided to start a new class.

He said: "Just now we were talking about Teacher Zhao's math class today. When I passed by the village chief's house while working in the fields, I heard Teacher Zhao say a little bit. We didn't go to school much, and we were very curious about what math is and what it is used for."

Good guy.

You guys didn't go to school much, but you guys study history every day?

Zhao Jun almost died of laughter after hearing this.

This Nini Village is a bunch of weird people. You can say they are knowledgeable, but they don’t even know the use of mathematics.

Let’s just say they are all illiterate without knowledge and skills. Each of them is proficient in history books and has some insights into history.

It's outrageous.

But he also knew that it was not surprising that something like this happened.

Because the village chief, Uncle Lari, told him that the reason why most people in the village know how to read and like to read history is because there used to be an old scholar in the village who taught the villagers how to read.

After the old scholar died, he left behind a lot of history books, mostly those of the Song Dynasty. The villagers regarded these history books as a pastime to pass the time.

This reason can be explained.

No wonder everyone likes the history of the Song Dynasty, it turns out that it is like this.

Zhao Jun somewhat understood why the villagers behaved both erudite and illiterate.

But he didn't show any impatience.

Because it's so unfathomable to pretend to be in front of someone who seems to understand but doesn't understand.

Pure illiterates don't understand anything. No matter how subtle you say, people will think you are farting.

Only people who know a little but not much can fool people if you use something they don't understand to fool the other person.

Zhao Jun said with a smile: "Mathematics is the basis of science. The development of physics, chemistry, and biology is inseparable from mathematical calculations. Without mathematics, science will be difficult to achieve."

"Can you give me an example?"

Zhao Zhen said.

"Then let's talk about chemistry. Chemistry is a rigorous experimental science that focuses on conducting experiments, but experiments require calculations and data."

Zhao Jun said: "Chemical reaction rates, material conversion energy changes, and molecular structure changes all require mathematical methods such as calculus, linear algebra, and vector analysis to perform structural calculations, so mathematics is widely used in chemistry."

"Forehead"

Zhao Zhen, Lu Yijian and the others looked at each other. Compared with Zhao Jun, they felt like they were illiterate.

"Teacher Zhao, I still don't understand. Can you be more superficial?"

Wang Zeng asked.

hey-hey.

Zhao Jun felt proud.

If I were a little more superficial and could be understood by you all, how could I appear to be different?

He is a liberal arts student majoring in history. He has not studied science in depth, and his limited science knowledge is at the junior high and high school level.

But that doesn't stop him from showing off.

Because in his opinion, Nini Village needs an excellent volunteer teacher, so that the adults in the village believe that as long as they give their children to him, they can cultivate promising children and change the fate of poverty in the future.

So how can we convince the villagers that he is such an excellent teacher?

Naturally, it shows his excellent knowledge level.

Will the village still go sideways by then?

At that moment, he said: "You should know about chemical fertilizers. Chemical fertilizers can increase grain production, turning a yield of 500 jins per mu into a yield of 1,000 jins per mu. The synthesis of chemical fertilizers requires mathematical calculations."

"I see."

Everyone pretends to be enlightened, but in fact they still don’t understand.

But everyone heard one thing keenly.

The yield per mu turns from 500 jins to 1,000 jins?

Good guy.

Is this fertilizer really so miraculous in its decay?

If the yield per mu could be doubled, wouldn't the Song Dynasty become invincible?

For a moment, everyone looked at each other and understood.

This new class still needs to be started.

Then Zhao Jun talked about some applications of mathematics in physics and biology.

For example, physical experimental operations, physical formula calculations, physical scientific counting; biostatistics, informatics, ecology, etc. are also inseparable from mathematics.

It can be said that mathematics seems useless in real life. Most people only need to learn addition, subtraction, multiplication and division.

But if it involves other sciences, it requires huge mathematical knowledge.

This is why basically all physics, chemistry, biology and other majors have a course called advanced mathematics, commonly known as advanced mathematics course.

And everyone was fascinated by it.

Although I don’t understand it, I always feel that it is very scientific and very powerful.

It seems that I will have to listen more and learn more in the future.

"Moreover, mathematics is a very practical subject. For example, I am the Liao Jingzong after the Battle of Gaoliang River. If I can do mathematics, then through calculation, we can get the escape speed of Zhao Guangyi's donkey cart."

Zhao Jun gestured with his hands: "Zhao Guangyi drove more than 140 miles in one night, drifting the donkey cart, showing his superb driving level. If we count one night as 12 hours, then we can get his speed per day. 11.6 miles per hour. At this time, Daliao sent out elite knights to pursue him at a speed of 23 miles per hour. He would be trapped in Dingzhou in two days, and then kill Zhao Guangyi under the donkey cart and save the Song Dynasty. "In water and fire."

Zhao Zhen: "."

Fan Zhongyan: "."

Lu Yijian: "."

Everyone: "."