After Wu spoke, most of the people around him agreed with what Wu said, especially the second senior brother who had just picked up the hammer for a while, and had the highest degree of agreement with Wu's words.

Now in the entire tribe, in terms of strength alone, he is the most powerful, and just now he personally smashed the hammer hard for a while, and his arm was a little numb, but he didn't squeeze out a few drops of oil, which shows that there is really no oil in it.

Moreover, this has already squeezed out so much oil from it, it is enough to fill a basin, and it must have squeezed all the oil in it.

Han Cheng glanced around, and saw that most of the people around him agreed with Wu's opinion, those who didn't hum, and it could be seen from their demeanor that they agreed with Wu's opinion very much, only Yuan didn't say anything, and some wanted to stop talking.

"Yuan, do you think there's still oil in there?"

After Han Cheng saw Yuan's expression, he asked out loud in his heart.

During this period, Han Cheng has successively taught a lot of mathematical knowledge about circles, and simple addition, subtraction, multiplication and division have been mastered.

"There should still be oil in it."

After hearing Han Cheng's question, Yuan hesitated and said.

Han Cheng ignored Wu Qi's disbelief and surprise, but smiled and asked Yuan Dao again, "How did you determine that there was still oil in it?" ”

Asking like this, I was faintly looking forward to it.

"It's ......"

Yuan paused at this point, opened his mouth a few times, and didn't think about how to express what he was going to say, and after scratching his head for a while, he suddenly squatted on the ground, and then found a wooden stick and began to write and draw on the ground.

Wu, Second Senior Brother and others who watched such a scene were all puzzled, didn't Shenzi ask how to know that the oil was not squeezed clean? Why are you squatting on the ground and starting to write?

Can you write?

When Han Cheng saw such a scene, the smile on his face became even stronger.

He leaned over to look at the circle and wrote and drew on the ground with a branch.

The first thing to be written on the ground in a circle is the ninety-nine multiplication table.

According to the order taught by Han Cheng, the ninety-nine multiplication table can be written silently, but it has not yet reached the point of proficiency.

Therefore, when calculating, the circle needs to write out the multiplication table silently, and then look at the multiplication table for multiplication and division operations.

After writing out the multiplication table, she began to draw division symbols on the ground with a twig, and then used thirty-five to remove five, and compared it to the ninety-nine multiplication table, she came up with the result of seven.

Then three hundred and fifty were used to divide the calculation by five, and after one calculation, seventy was obtained.

The result of this calculation is correct, but it does not solve the current problem.

Han Cheng could see the problem at a glance, but he didn't open his mouth to mention it, but stood there and looked at the circle that continued to be calculated there like a first- and second-grade elementary school student.

After some calculations, the circle writes out the last subtraction operation, and with the help of counting fingers, after another calculation, subtract thirty-five from seventy to get a thirty-five.

"Son of God, there is still so much oil in it that has not been squeezed out."

Yuan pointed to the bottles of tung oil and said aloud.

Before he did the calculations, Yuan vaguely felt that the oil in it had not been squeezed out, and after listening to Miko's question, this thought became even more convinced.

However, she is not proficient in addition, subtraction, multiplication and division, and she can't tell the problem in one bite, so she squatted on the ground and calculated it for a while.

Wu and Second Senior Brother looked at the two cans of oil in the direction of their round fingers, and they all showed disbelief on their faces.

They all saw very clearly, this time they had squeezed out a large pot of oil, as much as thirty-five catties, all in these two jars.

And just now, the second senior brother with the greatest strength also carried a bronze hammer and smashed it hard, but a few drops of oil did not come out, in such a situation, Yuan actually said that there were still thirty-five oils in this simple oil press that had not been squeezed out, of course they didn't believe it.

How is this possible?!

"Son of God, is there really so much oil that hasn't been squeezed out?"

Wu scratched his somewhat sparse head and said with a sense of confusion.

Originally, he didn't believe it, but when he saw Yuan, he would say that there was still oil in it, and Wu also became a little unconvinced.

After nearly a year of living together, as Wu got to know Yuan more and more, he knew that Yuan was a very smart woman.

Although what she said at this time didn't sound like it was true at all, Wu still muttered in her heart.

Especially just now, he was squatting there, holding a branch on the ground and writing, counting and counting his fingers, and there were words in his mouth, which looked very much like something and was very bluffing.

As soon as Wu asked like this, the rest of the people, including Yuan, who was a little apprehensive, also looked at Han Cheng with their eyes.

Han Cheng shook his head with a smile and said, "There isn't so much oil. ”

As soon as these words came out, Wu and the second senior brother immediately breathed a sigh of relief, especially the second senior brother, who opened his mouth even more, and said, just now, his arm was shocked and numb, and his strength was about to run out, how could there be so much oil that was not squeezed out under such circumstances?

The round face showed a look of confusion and doubt, according to the calculation method given to her by Professor Shenzi, that is, there are still thirty-five catties of oil that have not been squeezed out, how can Shenzi say that there is no at this time?

"It's not as much as the thirty-five pounds that Yuan said, but it's also a lot."

Without waiting for the second senior brother to be happy for long, Han Chengcheng opened his mouth again to hit everyone, and after saying such things, he smiled and said to Yuan: "You can calculate it again." ”

Yuan, which was originally full of entanglements and doubts, was said by Han Cheng like this, and did not talk too much nonsense, squatted directly on the ground, and began to carefully check the calculation process she had just written on the ground.

In the process of careful inspection, Yuan would sometimes write and draw on the side with the branch in his hand, and his eyes were full of thought.

After maintaining this state for a while, his round eyes suddenly lit up, and after a slight pause, he took the branch as a pen and began to calculate in another place.

Different from the slow swallowing just checked, the speed of Yuan's pen this time is much faster, and the whole calculation process looks much smoother.

"Son of God, it's fifteen catties, not thirty-five catties!"

After such calculations were carried out for a while, Yuanyuan, who was squatting on the ground, suddenly raised his face, looked at Han Cheng and said with surprise.

Han Cheng looked at her approvingly, nodded vigorously at her, and said with a smile: "Yes, it's fifteen catties!" ”

While saying these words, Han Cheng also gave a thumbs up to Yuan.

The female priestess of the former semi-peasant tribe is indeed smarter than ordinary people, and there have always been professors in the tribe about mathematics, and most of the people in the tribe are okay when it comes to addition and subtraction, but when it comes to multiplication and division, they are immediately blind.

For the rest of the people who can multiply and divide, a large part of them can just let them calculate numbers on paper, but they can't apply them to daily life to solve real problems.

But Yuan, a priestess of a semi-peasant tribe, has not been exposed to mathematics for a long time compared to most people in the tribe, and it has only taken more than two months to apply it to solving practical problems.

Today's series of calculations, in addition to addition, subtraction, multiplication and division, actually involves some proportional problems.

Although Yuan doesn't know much about this, he independently calculates the correct result.

Although I miscalculated the first time, it was very rare.

After all, she hasn't been exposed to mathematics for a long time, and the practical application is much more difficult than simply calculating numbers.

Sure enough, mathematics is a subject for smart people, and many times talent is really important.

The people in the tribe work hard, and most of them are good hands, and they are not scared at all, but when it comes to all kinds of knowledge, many people are weak in their legs.

The Chinese characters are better, after all, under the attraction of these popular Qingque tribe famous texts such as "Little Tadpole Looking for Mother" and "Monkey Fishing for the Moon", everyone is still very interested in these learnings.

But mathematics that is more abstract and requires memorization of many rules is really a headache, even if it is the best stone in the tribe to learn and learn, when it comes to mathematics, it is the same scratching of ears and cheeks, and now it is only a simple four operations, and further down, you can't understand it.

In this whole tribe, the level of stone is top-notch.

Now that he has discovered the good seedling of Yuan, Han Cheng naturally can't let it go, and needs to be encouraged.

This will help the circle to better immerse itself in the fascinating world of mathematics and go further and further, laying the foundation for the future development of the tribe.

The importance of mathematics is naturally known to Han Cheng from later generations, especially after the society has developed to a certain extent, and the role that higher-level mathematics can play in the development of society is more clear.

Of course, you don't need advanced and complex mathematical knowledge when buying groceries, but there are many things in this world besides grocery shopping.

Mathematics, when he first studied, Han Cheng was really embarrassed to lose his hair, and after he worked, he used very little, but he would not deny the meaning of learning mathematics because of this.

Now that Han Cheng has come to this world, he will naturally not abandon him.

People who have been hit on the head by apples say that it is easier to pick apples by standing on the shoulders of giants.

Compared to the current tribe, Han Cheng is undoubtedly a giant, if he can leave all these things behind, then the future generations, on the basis of these foundations he has laid, will also be able to stand on the end of the end that others may not be able to reach in their lifetime.

With this as a starting point, you can always go a little further and make the tribe a little better.

Of course, that's all years later.

However, leaving aside these future things, the Qingque tribe at this time also needs mathematical knowledge.

For example, statistics on things such as harvested grain and exchanged furs.

According to the calculation of the number of people, how much food does the Qingque tribe need in a year to eat? How long does it take for a road to be harvested by a different number of people to build it?

How many days will it take for the crops in the field to be harvested if everyone works together......

This series of things needs to rely on mathematics to calculate in order to be able to know in mind.

Although there will be errors, they are much more accurate than estimates.

Not to mention the rest, if Han Cheng didn't know that the oil yield was too different through calculations, the oil contained in the oil residue would have been wasted.

After hearing Yuan say fifteen catties and getting Han Cheng's personal confirmation, the second senior brother and the others were suddenly a little stunned.

Although fifteen catties is not as much as the thirty-five catties mentioned before, it is also not a small amount.

You know, this time, a total of thirty-five catties of oil were squeezed out, and two jars were filled.

These fifteen catties of oil can basically hold a jar!

"God... Miko, is there really so much oil? ”

The second senior brother looked at Han Cheng with some stammering and asked.

Han Cheng nodded and confirmed the matter again.

Seeing this, the second senior brother who was scratching his hair was about to smash these wooden stakes again with a bronze hammer, but was stopped by Han Cheng.

After thinking about it, Han Cheng had roughly figured out why the oil yield this time was so different from the last time.

This time, there was a lot of tung avocado powder, which was ten times more than the previous time.

When so many tung avocado powders are stacked together, the elasticity will increase, and it is not easy to smash them through.

To sum it up in one sentence, it is greedy and chewy.

The second senior brother who was stopped by Han Cheng was scratching his hair there, and along with him were Wu and Yuan, who had just calculated that there were fifteen catties of oil in it, and the rest of the people.

The strength of the second senior brother is the largest among all the people in the tribe, which is recognized by everyone, and now that the god son has stopped the second senior brother and prevented the second senior brother from picking up the hammer, how should the remaining oil be released?

Of course, there is a reason why Han Cheng stopped the second senior brother, the strength of the second senior brother is no longer able to squeeze out the remaining oil, if he can squeeze it out, he has already succeeded before.

Even if you slam the hammer again, it will be a wasted effort.

"Miko, what now?"

Everyone looked at Han Cheng with a puzzled look in their eyes, even the most powerful second senior brother couldn't help the rest of the tung oil, they really had no way to think about it.

"I have a way to squeeze them out!"

Human beings themselves are limited in their abilities, they can't swim in fish, they can't run to catch up with horses, and they can't fly in the air like birds.

However, because people have developed brains, they are able to create all kinds of tools to solve all kinds of problems they face.

With the help of ingenuity and tools, you can go to the sky and the earth, and you can dive into the deep sea......

When the strength of the human body itself reaches its limit, then tools are needed.

Han Cheng's tool this time was very simple, it was a battering hammer, similar to the one used to strike the bell in the temple.

However, the section of wood used for striking wood is larger, longer, and heavier than that of ordinary temples, and the impact force is correspondingly greater.

"Boom!"

"Boom!"

Han Cheng pulled the rope that tied the battering hammer with his hand, and after pulling the ram back up, he pushed it back with the force of the ram back.

The ram containing great power, under Han Cheng's control, with its own weight and the inertia of swinging in the air, coupled with the power that Han Cheng put on it, the fierce guy hit the stake.

There was a circle of strange people around.

Everyone chooses to believe in this kind of tool made by the Son of God, but there are some people who dare not believe in this belief.

Because the second senior brother, who is the most powerful in the tribe, can't smash it with a bronze hammer, and now the god son, who is not known for his strength, said that he would use such a tool to knock the stake down and squeeze out the oil.

Even though they were sincerely convinced of the Son of God, in such a situation, there was still some unbelief in their conviction.

However, when the ram made of rough wood hit the wooden stake under Han Cheng's control, the onlookers around widened their eyes, and the disbelief in their hearts all turned into powder under this collision, turning into surprise and disbelief!

Under this collision, the wooden stake, which the second senior brother with the greatest strength in the tribe couldn't smash with a bronze hammer, was actually smashed into it with a progress that was visible to the naked eye.

"Oil! Oil! It's oily again! ”

While many people were still surprised by such a scene and did not come back to their senses, someone pointed to the bottom of the improvised oil press and shouted excitedly.

When everyone heard this, they went to see that the simple oil press, which had been determined to have no oil before, began to drip oil after Han Cheng pulled the ram and hit it again and again, and it quickly turned from a drop to several thin lines......

It turns out that there is really so much oil in it, and it turns out that hanging a piece of wood horizontally really has such a big impact!

"Come on, hit me with me!"

After Han Cheng pulled the ram alone for a while, he said to the second senior brother who was standing aside.

At Han Cheng's signal, the second senior brother stood on the other side of the ram, and then worked hard with Han Cheng to pull the ram backwards, and then pushed it forward hard.

With the addition of the second senior brother, a person with great strength, the advantages of the ramming hammer were brought into play more thoroughly.

With the impact of the ram again and again, the wooden stake was smashed into it little by little, and more and more tung oil was squeezed out of it.

"Son of God, this method is so good!"

Looking at the tung oil that had reached more than seventeen catties after weighing, the second senior brother said excitedly.

Using this method, not only can the tung oil be squeezed cleanly, but also very labor-saving.

Even though the second senior brother has a lot of strength, when he can save his strength, he doesn't want to exert too much force, and he is tired like a lucky general who sticks out his tongue to dissipate heat......

Because of the successful manufacture of the oil press, and Han Cheng came up with such a labor-saving and efficient ram, the Qingque tribe was very happy.

Those lively and active minors always like to come here when they have nothing to do, and they always want to come over and play with the hammer when they have time.

Han Cheng was also very happy, on the one hand, because he took the people of the Qingque tribe to get the oil press out of scratch, and there was another machine in the tribe from now on, and on the other hand, Yuan Zhen was very talented in mathematics as he originally envisioned.

That's the good thing about being smart, and in many things that require brains, progress is always fast.

After the success of this large-scale oil extraction, Han Cheng did not let people continue to extract oil, and now the oil squeezed out is enough, and the remaining tung oil fruit can wait until winter to extract oil, after all, at that time, the people in the tribe are more idle.

After such a busy time, autumn is even more left, and the grass around the tribe has turned dark green, and when I get up in the morning, the cold dew sticks to the blades of grass, and it looks white.

People walked past here, and the dew rolled down between the shaking of the blades of grass, sticking to the surface of their feet, and some of them were frozen.

In the distance, the mountains and forests have also become colorful, although it has not reached the point where the mountains are red and the forests are dyed, but it is already fast.

Unconsciously, the late autumn of the tenth year of the green sparrow has arrived.

In the courtyard, Han Cheng, who was wearing leather gloves, directly dipped a pair of rattan armor in a clay pot filled with tung oil, and after flipping back and forth a few times, the entire rattan armor was already stained with tung oil.

Holding the rattan armor in his hand and waiting on top of the clay pot for a while, until there was no more oil dripping down on it, Han Chengcheng took this rattan armor and hung it on a shelf not far away.

More than a dozen pairs of rattan armor soaked in tung oil have been hung on this shelf, and now under the illumination of the late autumn sun, with some light, it looks very good.

"Knock knock, knock knock......"

The little pea who was carried back and forth in the tribe by the pandas held a rattle in his hand, shaking it back and forth, grinning and smirking, happy like a second fool.

The rattle in Little Pea's hand also looks bright, much brighter than the previous dull color.

This is also the reason for several layers of tung oil.

However, the rattle was not thrown into the tung oil basin to soak, but was rubbed out with tung oil with the unsuccessful silk woven by Bai Xuemei with silk, so that it was not easy to leave any traces on it, and it looked more beautiful.

"Tuk Tuk ......"

It's the sound of a crutch on a stone pavement.

As the sound came from far and near, a witch with a cane in one hand and a handful of wild fruits in the other appeared in view.

It's just that Wu's walking posture at this time seems to be very awkward, every time he walks forward, his body will involuntarily lean towards the side of the crutches, and the crutches stretch out a large amplitude and frequency.

It doesn't look like he's walking, but like a special show of his crutches.

In fact, Han Cheng had already let the cripple and Wu do it, but Wu felt that crutches would make him look old and could not highlight the hardness of his body bones, so he left it there and never used it.

However, since Han Cheng soaked this crutch in mint juice for a few days, dried it, and wiped it several times with an unsuccessful silk cloth dipped in tung oil, Wu couldn't do without this crutch when he walked, and he took it with him everywhere he went......

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