After I was reborn, I became a plug-in for the country

However, before starting to write, Yinfeng was still a little tangled up about which subject he should start with.

He has studied the system for so long, so he naturally knows that what he has learned is really useful, even more useful to the Qing Dynasty than those historical books and policies.

Just because he knew it was useful, he no longer asked Khan Ama to teach him to study books as punishment, but wanted to sort out what he had learned.In the future, it will be left to future generations, and it can also help the Qing Dynasty.

After making up his mind to organize it into a book, Yinreng naturally wanted to make a plan, how to write it so that it would be easy to understand.

He is most interested in mathematics and wants to start writing with mathematics first.But when he thought of the formulas he had learned and the English or other symbols contained in the formulas, he felt that even if he wrote them out, he would only say that he didn't know what to say after reading them.

In addition to mathematics, the importance of chemistry and physics is self-evident, but these two courses are also mostly strange symbols.Just starting his head, Yinreng was already scratching his head in worry.

How to organize English symbols into Chinese characters is the first major difficulty.

How to write so that Khan Ama knows that all the things he has learned are really useful, which is the second biggest difficulty.

When he was a student himself, he was stumped for a while, but now it is even more difficult for him to explain it to others than being a student.

During the time when Yinrong was scratching his head and tidying up, his confinement did not last for two months.

At the Mid-Autumn Festival banquet, his brothers all begged for mercy, asking Kangxi to release their prince brother as soon as possible.Among them, the third elder brother and the fourth elder brother ran the most diligently, almost running to the Qianqing Palace once a day.

Yinfeng was very moved when he knew about it, but he didn't realize that something was wrong until the night of Mid-Autumn Festival when he was surrounded by a group of brothers asking for their health.

Several elder brothers gathered in a pile, almost lined up according to size.Yinfeng looked over one by one, smiling all the time, until he saw Brother Six.

"Why is sixth brother here..."

To be precise, what makes him feel weird is not why the sixth elder brother is still there, but why the sixth elder brother is still alive now.In Yinreng's memory, his sixth brother should have died long ago.

Because he was too busy recently, he was so busy that he even forgot that his sixth brother should have been gone last year in his previous life.

But now, the sixth elder brother is very strong by the standards of a child, and there is no sign of premature death.If you count by age, you can start studying after two years.

"Your Highness can get a second chance, why can't others?" the system said calmly.

Yinfeng frowned, "You mean, the sixth brother is also..."

Could it be that the sixth brother, like him, was also reborn?

The "His Highness misunderstood" system denied his random guess, "Your Highness's opportunity changed the original history, so everything from now on will be different from your previous life."

"In other words, the Qing Dynasty may not necessarily be destroyed."

"As long as Your Highness works hard."

Hearing what the system said, Yinfeng happily took a sip of wine.It's a pity that this joy cannot be shared with others.He talked with other brothers for a while, then got up to toast him Khan Ama.

Yinfeng took the wine glass and walked up to Kangxi, and said shamelessly, "Ama Khan, I know I was wrong."

The fault was that I was too greedy at the time, otherwise I would have been able to hide it for a while.

Kangxi was still angry, so he didn't even look at him, "How did you copy the book?"

Yinfeng was embarrassed, "It's almost...almost."

In fact, it is not nearly the same, but much worse.It is too difficult to write all the subjects.He held back for a month, and he only finished sorting out the most basic things in geometry in mathematics.

Kangxi still didn't look at him, "Let's put those away first, and carefully write down those of the firecrackers first."

"Khan Amma want to see those first?"

"I didn't see it." Kangxi finally turned his face and glanced at his son, "It's Dai Zi who is eager to see."

Kangxi didn't want to rush.The firecracker was dangerous, and he wished his son would take out a blank piece of paper and tell him that Khan Ama's son didn't know what a firecracker was, and those were all false accusations against his son.

Even though he knew that this was deceiving himself and others, he still couldn't help but expect this from the bottom of his heart.

But Dai Zi, who lived in Jingshan and was in charge of making firecrackers, couldn't stand it, and kept urging him not to give up.

After they left Jingshan, Dai Zi knew that it would take a lot of work for the prince to write down the detailed production process, so he took the blueprint left by Yinfeng and tried it himself.

Kangxi attached great importance to the matter of firecrackers, and his place was a research center, so there were all kinds of objects, ironware, and even craftsmen.

It is precisely because everything is complete, so after Dai Zi tried many times, the things he made still failed to achieve the desired effect.Either the firecracker exploded, and the effect of the trigger was almost zero, or the amount of gunpowder loaded in the bullet could not be controlled.

He wasted a lot of effort and kept doing and doing again and again without sleeping or eating. He tried several times but still failed.Seeing that he didn't know when he could do it by himself, Dai Zi simply wrote an excerpt to ask Kangxi when His Highness the Crown Prince would be able to write out the fine waste method.

It would be fine if he only reminded him once, Kangxi would not be so impatient, he just thought he was straightforward.Who would have thought that he would write notebooks every now and then, expressly asking about his progress and reporting on the progress, but in fact he was urging him to do so.Made Kangxi tireless.

Yinfeng couldn't help laughing when he thought of Dai Zi's upright and fanatical efforts for Huozhu.The bad thing is that he is now being reused by Khan Ama, otherwise he might not be belittled.

"Tomorrow, my son will sort out the firecracker's stuff first, and send someone to send it to Mr. Dai after writing it."

Kangxi nodded, and looked at his son's slightly thinner face, and couldn't help feeling distressed.He entrusted: "Dai Zi is not in a hurry, you have to pay attention to your body."

Yinfeng smiled foolishly: "Thank you Khan Ama."

He talked to Kangxi about other things, and by the way, he learned that Suo'etu was sent to have peace talks with Junggar during this period.

It was said that it was a peace talk, but Suo'etu also got the order before he left. No matter whether he messes around or finds excuses to drag and ignore, it must be delayed until Junggar has no patience.

The father and son chatted until the family banquet was about to end.

Yinrong was about to go back to the palace, but saw his elder brother walking over with a slightly shy face.

"Brother is here to pour wine." Yinfeng joked, "It's getting late now, you don't dare to drink any more from this cup."

Yinfeng looked around, screened off the servants, and then stepped forward, leaning into Yinreng's ear and said, "I heard that you are playing with Dai Zi?"

Yinfeng laughed, "Brother, who did you hear it from? I just asked him a few words."

Messages from this palace spread really fast.Jingshan is so far away from the capital, and what happened in the hunting ground that day is no longer a secret.

"Don't fool me." Yinfei obviously didn't believe his words.

He looked up at Kangxi, and said: "If you really know how to do it, then think about saving it for me. Don't tell Han Ama about this, or you will be sued...that you are ignorant and incompetent .”

The second child wanted to hide his secrets, but he was the first to refuse.Everyone knows how rare the fire gun is.If he didn't take the opportunity to ask for it, it would be a pity that he thought about putting his face down today to please him.

Yinreng only felt physically and mentally exhausted, how could he ask for help with such an attitude.But seeing his unrelenting drive to achieve his goal, he could only vaguely say: "Yes, yes, if Dai Zi makes it, I'll ask him to keep it for the elder brother."

It's over, just dealing with him, Khan Ama, is exhausting enough, and he will have to deal with his elder brother in the future.

Hearing that he finally agreed, Yinyi left contentedly.

Yinfeng shook his head, thinking that who would have expected that one day, his relationship with the boss would be so good that he would not even think of suing him when he was threatened.

Seeing that they were all gone, he, Khan Ama, had already left the banquet, Yinfeng stretched his waist without any image, and ordered to follow his own Huaiqing to pass on someone to carry him away.

After drinking, he was very lazy, and really didn't want to walk back by himself.

All the way was carried back to Yuqing Palace by the servants.

Yinfeng leaned on the seat half-stretched, and suddenly remembered that a few years ago, on Khan Ama's birthday, he was carried back in the same way.At that time, the servants carried him and passed by the garden in front of Duanben Hall. He squatted on the ground and felt sorry for the flowers he had planted so hard for a long time.

It is already a long way off for the dignified prince to plant flowers himself.The flowers in the garden are still the varieties carefully bred by the gardeners of Fengchen Garden.

Asking someone to light the lamp in the study, Yinfeng wanted to take advantage of his sleepiness to tidy up the gunpowder and firecrackers that Dai Zi urged.

The moon is in the middle of the sky.All the servants withdrew, only Huai Qing stayed in the study to wait on him.

While grinding the ink for him, Huaiqing persuaded: "His Royal Highness, it's getting late, you should rest early."

Yinfeng ignored him, and after the nib of the pen was covered with ink, he was busy writing with his head down.

The blueprint he gave Dai Zi was extracted from the system, using the earliest miniature bullet firecrackers.Considering the craftsman's production level and Dai Zi's comprehension ability, he did not choose the more advanced style of firecrackers in later generations.

Too powerful firearms, such as

K and the like, even if he can write clearly, the craftsman may not be able to make it.

The scary thing about this Minnie bullet is that it can not only achieve bursts of ammunition, but also has a very high lethality.For example, if the firecracker that Dai Zi can make now can hit the prey at most fifty steps away, the range of the Minnie bullet will be more than doubled.

Secondly, although the style of the firecracker cannot be advanced, the material used to make the firecracker can be better.

Yinreng carefully wrote down the material used to make the firecracker. After thinking about it, he also wrote down the method of smelting iron from iron ore, then further making steel, and the alloy smelting methods that might be used.

It was not until half an hour after midnight that he finished writing everything.

After blowing on the wet ink, checking the process with the system, and checking whether there was any typo in what he wrote, Yinfeng put down his pen and went back to the bedroom to go to bed.

These things were sent to Kangxi early the next morning.

Although at the Mid-Autumn Festival banquet, Kangxi briefly allowed Yinreng to be released from the ban to reunite with his brothers, but he still did not order his son to go back to the early court.

So Yinfeng continued to study books in Yuqing Palace.

Kangxi took the things written by his son and read them several times, but he was at a loss.Only then did he order: "Send it to Dai Zi quickly."

Liang Jiugong took the decree to do it.

Kangxi thought that this would be enough, and Dai Zi could finally live in peace for a while.Unexpectedly, not long after the things written by Yinreng were sent to Jingshan, Dai Zi wrote another note to ask.

This time he didn't ask about the firecrackers anymore, but instead asked if there were any extra points to be paid attention to in the way of steelmaking, and where to dig the minerals needed for the production of alloys.

Kangxi flipped through it and said angrily, "Call Dai Zi back from Jingshan!"

He still has to push his feet, it's endless, isn't it!