The correct way to open the sprite

What gave Feng Yu a headache was the lack of cheap paper and pens. Feng Yu could only think of a crooked trick. He used a porcelain kiln to bake a batch of one-meter-long and half-meter-wide porcelain plates. The surface of these unglazed porcelain plates was It was slightly rough, and he painted it into small blackboards with charcoal.

While he was painting, he complained about the elves, who have been so poor for so many years and are so poor. China started 2000 years ago, and then there were prosperous dynasties one after another.

It seems that the living environment of living things cannot be too good. The black uncles just lie under the trees all day waiting for fruit to hit their heads and enjoy the birds, just because the living conditions are so good. They have not made a name for themselves until now.

This is even more true for elves. The history of civilization that exceeds ten thousand years has been mixed up and created such an embarrassing situation.

As a foreigner from another continent, Feng Yu had a close relationship with Nicole, and his lectures caused quite a stir in a small area.

Anthony only found a total of thirteen students for Feng Yu as promised, but there were a lot of people watching his first class. Even Nicole didn't meditate and practiced. She stood next to Anthony and waited for Feng Yu to lecture.

Not only did Allen and Dick come, but Feng Yu also discovered on the spot the elf mage who had alchemy as his secondary job that he had been thinking about, which made his enthusiasm for teaching even higher.

Time to show off a wave of real technology.

Originally, he planned to give the students Arabic numerals as the basis for the first lesson today, but seeing so many people watching the excitement, he knew that he had to come up with something useful today to shock them and prepare for his next actions. A foundation.

At the very least, he had to even out the IQ gap with these self-righteous experts, lest they place themselves too high one by one and look at Feng Yu like a visitor from a wild world.

Feng Yu listened to Nicole's magic class twice and then stopped going. He found that the way the magicians in the camp looked at him changed. Even if he tinkered with salt, it only made them novel, not worshiped. This Feng Yu was extremely unhappy.

You are all such cunning and arrogant people. Those who study magic don’t know the nature of elements, those who study alchemy don’t know the laws of chemistry, and those who study herbal medicine don’t even understand plants. Who gave you the courage to talk to the time traveler? Tail up

Feng Yu burned a two-meter-long blackboard himself, and his kiln was that big.

He glanced at the crowd around him and wrote a set of elven words on the blackboard on long strips of limestone: Mathematics.

Feng Yu clapped his hands, and the onlookers slowly became quiet.

"If you have any questions about what I'm talking about, please raise your right hand to indicate that you can ask questions only with my permission. This is a sign of respect for the teacher and a reflection of personal accomplishment."

After Feng Yu finished speaking, the low-pitched communication stopped.He glanced at Nicole, who was holding Anthony's arm, and stood by the blackboard to start the first scientific enlightenment class for humans in the world of high demons.

"There is a big cultural difference between the continent of Gerien and my hometown. The biggest difference lies in the emphasis. I once looked at Archmagister Anthony's collection of books in his tent, and I have to say that the literature of the continent of Gerien The development is excellent and I have seen a lot of what I would call great literature.

These great writers were impassioned and wrote one after another that can be called immortal works.

So today I will not talk about literature, but talk about some of the things we are studying there, which are these two words of mathematics that I wrote.

Maybe the students will ask, what is there to say about mathematics? Who can’t do mathematics? No matter how stupid a person is, he can’t make mistakes when he eats three meals a day.”

Some of the elf boys couldn't hold it back and laughed in front of the Great Magister Anthony, including Nicole, but they quickly stopped laughing.

"Yes, who doesn't know mathematics? But the question is asked in reverse, who doesn't know literature? We can't write immortal poems. It's not difficult to record what we say and do every day.

Some people will say that that is not literature.

I would also like to say that counting how many meals you eat each day and how many bowls you eat at each meal is not mathematics. It is the same as recording what you said every day.

Literature has immortal poems, but what does mathematics have?

As everyone knows, I have brought the method of making salt from my hometown to our camp. Chief Allen and Chief Dick are working hard to build more salt fields, so that every family in the camp will no longer have difficulty eating salt. effort. "

Alan and Dick stood in the crowd, raising their heads proudly.

Feng Yu continued: "I told Chief Dick that by building the salt field according to the size I designated, everyone in the three tribes of elves, dwarves, and halflings can eat salt.

So, how did I calculate it?”

Feng Yu wrote a series of numbers on the blackboard, and then said: "The amount of salt each of us eats every year is limited and stable, which lays a foundation for calculations.

Then based on the total population of the three tribes, we know the total amount of salt needed by all the three tribes every year, and the same is true for the output of each salt field.

In this way, we can calculate how large a salt field is needed to meet the salt needs of the entire population of the three ethnic groups. "

Feng Yu filled the blackboard with symbols and finally came up with a number. Then he clicked on the number with his hand and turned around and said, "After calculation, it only takes a salt field about five miles long and wide to do it."

The onlookers were all prominent figures in the camp. When they heard this number, they became uneasy and started discussing.

Anthony patted Nicole's hand calmly, and Nicole glanced at her grandfather and raised her little hand playfully.

Feng Yu glanced at her and said, "Nicole, do you have anything to ask?"

"Darren, how did you figure that number?"

"I calculated it through numbers. It's very simple, but it needs some data support. For example, each person needs about 5 kilograms of salt consumption per year, and the amount of salt that can be produced per acre of salt field per year. As long as you know these, this number It can be calculated very easily.

If you still don’t understand anything, you are welcome to continue listening to my class. In future classes, I will slowly teach you more advanced methods of using mathematics.

In order to let everyone better experience the magic of mathematics, I am going to play a small game with you now, both students and everyone can participate.

Everyone knows about the stick rice used by the halfling brothers to make flour. The food made from the stick rice flour is delicious. Thank you, the great halfling brothers. "

Feng Yu patted his left shoulder, saluted Allen, and then continued:

"My little game is like this:

If I give you three hundred kilograms of salt in exchange for rice grains, you only need to pay me one grain of rice for the first ten kilograms of salt, two grains of rice for the second ten kilograms of salt, and ten grains of rice for the third time. Four grains of salt per kilogram, eight grains for ten kilograms of salt for the fourth time, and sixteen grains for ten kilograms of salt for the fifth time. "