Suddenly, Xiaowei on the side was having fun, and disappeared from the window in the next second, leaving only the paper windmill that was still spinning.

The next moment, Ran Qiuye walked in with a water glass.

"I'm still busy."

Ran Qiuye walked over and put the water glass down.

"Hmm."

Yang Xiaotao stretched out his hand to stroke the rubbing on his shoulder, looking very helpless.

"Didn't you say you had found an idea?"

"Yes, I found it before, but I still haven't made it."

Yang Xiaotao put the information aside and said helplessly.

"It's okay, I can't do it slowly."

"I think it's amazing to be able to do this."

Ran Qiuye said adoringly, as a teacher, he knew the importance of knowledge, and because of this, he knew how important it was for Yang Xiaotao to do this.

"But, I still can't do it."

"Don't think about it, change your mind."

Ran Qiuye sat on the chair next to him and talked about the Little Dragon Boat Festival with a smile.

"You don't know, the little guy is rare for two younger sisters, and if he is not careful, he will take something for them to eat, yesterday I didn't look at my mother, he directly took a green persimmon and put it in Rong Rong's mouth."

"When we watched, Rong Rong was licking it with her tongue."

Ran Qiuye said, Yang Xiaotao smiled, although this matter is very dangerous, it is still a little difficult for them to reason with a child who is less than two years old.

They are all children, some are bigger than this, and the Dragon Boat Festival is bigger.

Without these two twins, the Dragon Boat Festival is also a very small child.

"Tell me earlier, I'll beat him up."

Ran Qiuye rolled her eyes, "Are you willing?" ”

"Then what's reluctant, I'm not a master, that's expensive."

"The old people love their grandchildren, and the next generation is like this."

"Also, you didn't look at Dad, he hugged the Dragon Boat Festival when he was fine, and now he doesn't even look for his mother during the Dragon Boat Festival. I rebelled for this windmill. ”

Yang Xiaotao smiled, "So when the child is young, he will learn how you teach him." Whatever you give him, he receives. ”

"As we say, from a young age, if you change places and everyone speaks English, then the child will learn English."

Ran Qiuye nodded, and then sneered, "Yes, isn't this the third move of Meng's mother." ”

"Meng's mother moved three times? That's just a later person to sort it out, is there really any, you haven't seen it. ”

Ran Qiuye said unhappily, for the teacher, to question her knowledge, she must theorize.

"How do you know it's fake?"

"I didn't say it was fake, I just said, you haven't seen it, I haven't seen it, it's just recorded in the book, and everyone agrees."

"That's also true, there are people in the Eastern Han Dynasty who have passed it down.."

"There are still Western Han Dynasty in front of the Eastern Han Dynasty, and there are also Spring and Autumn Warring States periods, why haven't you written it down."

"Hmph, you're quibbling."

Yang Xiaotao saw that Ran Qiuye was a little serious, and he didn't dare to tease anymore, so he quickly reached out and hugged the person over, and the struggling Ran Qiuye couldn't escape, so he could only be held in his arms.

"Okay, okay, my husband is wrong, my husband shouldn't doubt the sages, okay."

Ran Qiuye stretched out his hand and pressed the big hand that wanted to get an inch, but he was still unhappy, "You can question it, the great revolutionary mentor said, doubt everything, you can doubt Meng Mu Sanqian, I can also doubt this, what kind of machine tool knowledge." ”

"Everyone can be suspicious, and it's even."

Ran Qiuye didn't resist Yang Xiaotao's strength after all, and that hand succeeded again.

It's just that when she finished saying this, Yang Xiaotao was obviously stunned.

Even the power in her hand suddenly increased, making her face hot.

"Wife, you say, doubt the knowledge of this machine tool?"

Ran Qiuye endured the restlessness in his heart, the strength in his body seemed to be drained, and the whole person leaned on Yang Xiaotao, and he didn't hear what Yang Xiaotao said clearly.

Yang Xiaotao didn't hear Ran Qiuye's answer, and looked down, the blush on his face was extremely charming.

"Don't look."

Only then did Yang Xiaotao realize that putting his hands in place was Ran Qiuye's weakness.

The corners of his mouth were raised, and Yang Xiaotao directly picked up Ran Qiuye and walked into the house.

An hour later.

When the clouds and rain stopped, Yang Xiaotao held his tired and sleeping daughter-in-law in his right hand, and his left hand was on the back of his head, and what Ran Qiuye said appeared in his mind again.

You can doubt Meng's mother's three moves, and I can also doubt the knowledge of machine tools.

In a word, he woke up.

It is undeniable that the development of science and technology can promote the progress of human society.

However, a sentence said in later generations also made him remember it vividly.

Science knows no borders, but scientists have borders.

And the books he reads are all foreign.

Hundreds of years ago, the countries where these books were located were all robbers.

A robber's book will generously share advanced knowledge?

Reaching out and tightening the jade man in his arms, touching the silky skin, Yang Xiaotao remembered a joke he had seen in his previous life.

It is said that there is a very famous work in the Northern Song Dynasty, which is similar to an encyclopedia, called "Mengxi Bi Tan", which records a lot of science and technology, involving various fields, including biology, chemistry, and even the manufacturing methods of some instruments.

Among them, it is recorded that the manufacturing method of the Northern Song Dynasty god arm bow.

Later, after the book was obtained in the countries of the eastern peninsula, it was regarded as a model and a treasure.

In the decades that followed, with the help of this book, the peninsular nation increased its military strength and created its own 'Divine Arm Bow'.

This made some domestic careerists swell, armed with advanced weapons, and began to frequently provoke the surrounding small tribes.

How could these small tribes withstand the attack of the advanced equipment of the peninsula sticks, there was no choice but to turn to the suzerain.

As a result, the suzerainty sent a force of its predecessors, the entire coalition of small countries, to crusade together.

In the face of the suzerain's country, the confidence of the peninsula stick wants to get ahead, and puts the hard-earned 'Divine Arm Bow' on the front line, only to find that their own 'Divine Arm Bow' is only half of the range and power of the opponent.

In that battle, there were countless casualties.

That battle, humiliation and peace.

Knowing that in the end, their lord asked why the gap between the divine arm bows they made according to the drawings was so big.

The officials of Honglu Temple who received them listened and were full of ridicule.

"How can the important weapon of the country be given lightly?"

Hearing this, the lord of the country suddenly realized, and then his face was full of shame.

When Yang Xiaotao heard it, he knew that it was apocryphal, but what he said in it was not necessarily false.

Especially that finishing touch, it's very true.

His eyes looked at the roof, it was pitch black, as if he had just come into this world.

At that time, he knew a truth.

Relying on the mountains and mountains, relying on everyone to go.

Close your eyes and the system panel comes to mind.

It's better to rely on people than on the system.

Familiar panels, familiar skill lists.

Credits, 19999.

There are still 10,000 credits left before the seventh-level engineer.

Originally, I wanted to save it up and be promoted directly to the seventh level engineer.

As more and more things are involved, Yang Xiaotao feels difficult to do some things.

And this kind of struggle is sometimes a kind of ignorance.

If you want to change, the most direct way to increase the level of the engineer is to do so.

Therefore, Yang Xiaotao has always kept the credits, unless it is necessary to exchange them for materials from the exchange column, and they are kept at other times.

But now, regardless of whether there is a problem with foreign books, whether it is another 'drawing of the production of the divine arm bow', Yang Xiaotao needs to find his own 'way'.

After taking a closer look at the system, there is only one sub-skill that can be improved at this stage, and the mechanical mastery is proficient.

In any case, mechanical proficiency is also close to the machine tool, like other cooking and fishing skills, it is estimated that it is level eight to the top, and it has nothing to do with the machine tool.

Thinking of this, Yang Xiaotao used credits to improve his level in mechanical mastery.

"Ding! Does the host need to consume 3000 credits to improve the sub-skills and reach level 5 in mechanical mastery? ”

Three thousand?

Yang Xiaotao was a little surprised, if he remembered correctly, it would take a thousand credits to upgrade to the fourth level of mechanical mastery, and the speed of inflation was too fast.

Yang Xiaotao was very suspicious, and the system looked at so many credits on the books, and temporarily increased the price.

However, you get what you pay for, and after spending so many credits, you have to give something good.

Moreover, improving the level of mechanical mastery, this experience or something, can always help you.

"Yes!"

"Ding, congratulations to the host, the mechanical mastery level has been increased, and the current level is level five."

"Ding, congratulations to the host, get a reward car blueprint."

Yang Xiaotao agreed, and in the next second, a familiar feeling appeared again.

The credits on the system abruptly disappeared, and then a torrent rushed into my mind.

In an instant, Yang Xiaotao felt that countless experiences filled his mind.

After knowing for a long time, Yang Xiaotao became conscious and silently felt the changes brought about by the upgrade.

"Give the drawings for the manufacture of the car? It's not a machine tool. ”

Psychologically disappointed, but it's not without gains, at least the understanding of machinery is more comprehensive.

Especially in the design of machine tools, he found that he was able to find the crux of the problem more clearly than before.

"Since it doesn't work once, let's do it again."

did not obtain the drawings related to the machine tool, so Yang Xiaotao was unwilling, so simply, strike while the iron was hot, and do it again.

"Ding! Does the host need to consume 8000 credits to improve sub-skills and become mechanically proficient to level 6? ”

The prompt sound of the system did not carry a trace of emotion, but Yang Xiaotao felt that the egg hurt when he heard it.

Of course, it can also have something to do with being pressed.

But Yang Xiaotao is even more convinced that this is the system sitting on the ground.

"Better yet, don't play tricks on me."

"Yes!"

Yang Xiaotao took a deep breath and decisively agreed.

"Ding, congratulations to the host, the mechanical mastery level has increased, and the current level is level six."

"Ding, congratulations to the host, get a reward AL-21 engine blueprint."

Yang Xiaotao hurriedly checked the reward, but it was just the same, and a sentence stood out in his mouth.

"Damn, it's a loss."

Subsequently, consciousness was shocked by the flow of data, and this time it came even more violently.

Then he went to sleep.

Ran Qiuye, who was lying in Yang Xiaotao's arms, only felt a strange vibration coming from his body, which lasted for a while before he slept peacefully.

The next day, Yang Xiaotao was woken up by the cry in his ears, and when he opened his eyes, he saw Ran Qiuye holding the third child and coaxing.

"What time is it?"

"Half past six, you can sleep again."

Ran Qiuye changed the third child's diaper, picked it up and fed it again, and said to Yang Xiaotao.

Yang Xiaotao looked at the time and didn't lie down, "I can't sleep." ”

With that, I got up and got dressed, and went out to wash my face and cook.

After boiling the rice porridge and boiling the eggs, Yang Xiaotao remembered that he had been promoted two levels in a row last night, and he didn't remember to check the final reward.

"This is? Engine drawings? ”

Looking at the two extra drawings in the system space.

The car drawings are more than a meter high, but compared to the engine drawings on the side, they are nothing in comparison.

"This, this is, turbojet engine? Airplane's? Me, go! ”

In the next second, Yang Xiaotao looked at the introduction of the drawings, obviously, this drawing, or rather, this engine, has not yet been released.

At this moment, Yang Xiaotao felt that it was worth the money, and this one alone was more valuable than any semi-automatic machine tool.

This is a mature engine drawing.

"Grandma has a leg, it's really better to rely on others than on yourself, and it's better to rely on yourself than on the system."

"Lao Tzu has been working hard for a long time, but he hasn't made a semi-automatic, which saves two levels, not only has his experience and ability improved, but also given such a big gift."

"This system, indeed, is a big dog."

Yang Xiaotao said in his mouth, and the psychological depression could be regarded as dissipating.

However, Yang Xiaotao soon realized an important problem.

What should he do with the drawings?

Is it possible to let the rolling mill make an airplane?

If this is said, it is estimated that Yang Youning will have to explode on the spot.