After reading the answer, Renault didn't comment on it, and said it after dinner.

In fact, when he came up with the question, he thought that these students can be regarded as adults in Dachu, although they are under twenty, it is okay to get married and have children. Except for a few small ones such as Huya and Mozi, even Moxiang can marry and be a mother.

One plus to a hundred, it sounds a little difficult, I have learned the four operations, understand the rules of addition and subtraction, as long as you put your mind to it, it is impossible not to calculate, and even the probability of error is not high.

These people, it took half a day to finish, obviously not proficient, this is normal, when he learned addition, only three years old, within ten to learn addition to a few months to half a year, children who learn late, four or five years old will be simple addition is not strange.

"Continue in the afternoon, and continue to add from the answers you got in the morning, and add to two hundred. Renault shook his hand and left.

This is the tactic of the sea of questions that Renault came up with, and if you use this method for the four operations, you will have endless questions, how worry-free. What he was worried about was what to do in the future, there were too many things to learn, and the questions would not be good.

Forget it, let's talk about it then, Renault is still thinking about playing on the phone at this time, he naturally can't make something as tall as a global call, and it is impossible to even talk to the whole city, to put it bluntly, the hand-cranked phone he is engaged in now is a big toy.

Ink black, resin, clay are all there, Renault did it himself, Zhang Tan, Li Si as a small worker, a while of hard work, use the mold to make a bunch of resistance, the next is firing, this is simpler, you don't need to go out of the house, there is a small furnace in Zhang Tan, control the temperature, you can burn out, anyway, there are not many of them.

Renault can't do anything else, temperature control is the best, just give instructions to the God of Wealth, just stare at the data on the screen, although it can't be compared with the constant temperature sintering furnace, the upper and lower temperatures are not much different.

"Zhang Tan, have you prepared all the things you have prepared?" asked Renault.

"It's all set. Zhang Tan replied, simple parts, no need for him to help, his son's apprentices are all good, placed in the craftsman camp, they are all the level of master craftsmen, in Renault's side, they can only do the work of small workers, and they can only bear the grievances, I don't see that Zhang Tan is often used as coolies.

"How much has been built, let someone send it first. Renaud rubbed his hands, a little excited, but he knew that he would definitely not be able to finish it today, so he had to try.

Renaud took the two of them to assemble the phone, and in the study over there, everyone was calculating the problem, from one hundred to two hundred, which was much more difficult, after all, it was a three-digit addition.

The ninth princess has already counted to more than one hundred and thirty, her wrists are sore, she rubbed her wrists and stood up, moved her limbs, and saw that everyone was burying her head in the calculations, nodding secretly, such an opportunity is really rare, and only by seizing the opportunity can you fight for a future.

Suspicious, no, isn't everyone counting, that little one, sleeping?

The little thing in the eyes of the ninth princess is naturally Mozi, this kid has suffered a lot, malnourished, thin and small, and looks much smaller than Huya.

Looking at his sister Murphy again, she was gritting her teeth and trying to calculate, the ninth princess was slightly angry in her eyes, her sister was not bad, but this younger brother was an unsuccessful person.

walked over, stretched out his jade finger, and tapped lightly on the table twice. The sound was not loud, but the room was quiet, and everyone's eyes were cast.

"Wake up and go back to sleep. The Ninth Princess's voice was still very soft, but everyone heard a trace of coldness.

"Princess, I'm ......" Murphy hurriedly got up and saluted, on the surface, everyone was learning things from Mr., but the gap was actually quite big.

Among these people, Huya wants to learn and learn, and he is the long-term follower of Mr., and even the Ninth Princess will respect a little. Cui Qing is an apprentice, and the ninth princess is a maid, strictly speaking, only the two of them are qualified to follow Mr.

Cui Qing was driven to the fire kiln by Mr., and everyone present, whether it was their identity or their status beside Mr., respected the Ninth Princess.

Seeing Mozi's appearance, Huya was also angry, didn't he just dedicate this secret book, just give you food, let you follow the learning things, and dare to sleep?

Stand up and reach out to take Mozi out. Before his hand reached out, Mozi still closed his eyes and said, "I don't think it's right, don't you feel it?"

Huya's hand paused: "What's wrong?"

"In the morning, Mr. will add one to 100 questions, and in the afternoon, he will add to 200 based on the number of mornings, that is to say, what he does all day is from one to two, which is not right. Mozi closed his eyes and said affirmatively.

"You are talking nonsense, it is impossible for the gentleman to be wrong. Huya was angry, picked up Mozi, and was about to throw it out of the door, but at this time, Mozi, the kid, hadn't opened his eyes yet.

Mozi was carried by the tiger's teeth, but his face did not change, and he nodded and said: "Yes, Mr. will naturally not be wrong, that is, we are wrong, but where is the mistake?"

Huya was confused, he didn't like to read, Mr.'s knowledge is a university question, it is a secret art, so he followed the learning, in the morning, he has been dizzy, a belly of anger, but there is nowhere to vent, this is how to clean up Mozi.

In normal times, Huya would not deal with a little Ding Dou at all, he looked down on the Mo family sisters and brothers from the bottom of his heart. When the tiger family was in trouble, he, Uncle Wang, and Tiger Sister persevered.

"Huya, put him down first. The Ninth Princess spoke.

Huya was still in awe of this princess, and as soon as he let go of his hand when he heard the words, he threw Mozi on the ground, and Mozi didn't get up, sitting cross-legged on the ground, as if he was still thinking about something.

"Tell me, what did we do wrong?" the ninth princess's curiosity was aroused.

"What is the use of arithmetic? I remember that when Your Excellency taught us to know numbers, the first thing you talked about was that arithmetic is the foundation of all kinds of work. ”

The Ninth Princess nodded, that's right, what was taught yesterday, it's impossible to forget, but what does this have to do with today's studies? What's wrong?

Mozi said softly, more like talking to himself: "Since arithmetic is to lay the foundation for a hundred work, then the solution is more important than the process, one to hundred, one hundred to two hundred, and the cycle repeats, which makes no sense." ”

"Why is it unreasonable? Mr. must be reasonable!" Naturally, the speaker is Huya, in his heart, Mr. is the most powerful, you little Ding Dou, dare to say that Mr. is unreasonable?

If it weren't for the Ninth Princess, he would have used his fists to teach Mozi the truth of being a human being.

The ninth princess naturally wouldn't be so violent, her eyebrows frowned slightly, and she felt that what Mozi said couldn't be understood, and vaguely, it seemed to make sense......

"Your Excellency first speaks of arithmetic, then you teach addition, then subtraction, multiplication, division, and four operations, and finally one plus to one hundred, and then to two hundred. "Mozi has become deeply immersed in his own world, ignoring external objects.

Since he added to fifty, he felt that it should not be your intention to add it like this, since he has learned four operations, why only use one addition?

If Renault were here at this time, he would have been surprised. Children on the earth know Gauss's theorem, and they don't think it's a big deal, and they will understand the significance of Gauss's theorem when they are older, which is really not something that ordinary people can think of.

Mozi was pondering, and the Ninth Princess was listening.

At this time, Renault has installed several telephones, and a lot of parts have been built, including the fine iron ruler that was built before, and the work difference has been set, and the yield is significantly higher.

The telephone is available, but what is missing is copper wire, and the thin copper wire is in Dachu, which is difficult to manufacture. In order to get this thing, Renault asked Zhang Tan to build a wire extruder, which is a relatively old device.

The extruder is a pentahedral fine iron box, very thick, the sixth side is empty, on the opposite side of the empty surface, three small holes are drilled, for these three small holes, Zhang Tan spent a small half a day.

Such a simple thing is the main body of the extruder, and the other half is the presser, the same size as the box, and a long fine iron column is connected to the back.

When using, the copper block is heated first, separated into a suitable size, and in the red-hot state of the copper block, it is put into the main body of the wire extruder with an iron clip. Then aim the pressure device at the vacant side, so that the box is in a fully closed state, and a few strong men push the fine iron column with all their strength to give enough pressure to the copper block inside.

When the pressure is high, the copper will be squeezed out of the small hole, and the copper wire will be squeezed out little by little, which is similar to cold-pressed cooking oil.

This method is naturally very backward, and the speed is also very slow, and it is almost impossible to produce copper wire in batches, but fortunately, Renault has not thought about popularizing telephones in Dachu.

Until the evening, the copper wire was squeezed out for more than 300 meters, which was enough, Li Si, the great grandmaster, was the main line of the squeezing line, if he hadn't made a lot of efforts, let alone 300 meters, 30 meters would have been a problem.

After a busy afternoon, Renault took a shower first, and he was not in a hurry to answer the phone, anyway, it was just a toy to pass the time, just play slowly, and take the first step, Renault's mind began to diverge, feeling that this thing could be played for a while.

"What's wrong with you guys? Haven't you finished the afternoon?" Renault asked, looking at the expressions of the Nine Princesses and the others a little strange.

"It's Mozi, he said we didn't do the right thing. Huya said dissatisfiedly, do a good job of calculating the problem, but as soon as Mozi said that, everyone didn't have the heart to calculate, and they didn't do anything for half an afternoon.

"Oh? Renault said indifferently, cheering for himself in his heart, people who have gone to college, they are smart, let you get stricken, this is only added to two hundred, and when you are done, continue to add up.

Hehe, I have countless questions, calculate until you want to vomit, calculate addition, subtraction, multiplication and division, and geometric algebra.

"Sir, Mozi said, it's not a miscalculation, it's a wrong way of thinking. Say sir, you're not here to let us do the addition. "Huya is clearly complaining.

"Oh, it's not an addition, it's what?" Renault was shocked, this is the rhythm of genius?

He said that maybe all four operations would have to be used. "Huya continues, Xiao Dingdou is annoying, Mr. had better drive him away, he doesn't even know a word, so he wants to learn arithmetic?

"Can you figure it out?" asked Renault quickly.