This is the first time that Qian Rujun has released all the students from Xuetang Island.

Originally, she wanted to leave someone by her side to serve her.

But this time, unlike other times, the person who was left behind didn't know whether he should be happy or sad, serving Qian Rujun may be the most comfortable, but the other classmates have gone out to do all kinds of efforts, struggle with nature, struggle with the people, and there will be a lot of growth in the future.

If she hadn't had the same future experience as her classmates, perhaps she would have been despised by others.

Looking at the eyes of this Xuetang Island student, Qian Rujun knew her thoughts, and originally wanted to contact other people through it, because she was locked up in Chang'an and couldn't go out.

But seeing that this student really wants to do the same thing as the other students on the school island. I don't want to be put aside from the experience of life, and I know that the original idea is useless.

Because the most important thing is that the students of the school island have a shared experience, and when the students of the school island who taught the wild people to farm come back, maybe they will form a group of their own.

Because they have a common past, and although everyone's past will be a little different, they still have a common language.

The people who are sent out to teach the people the motor are also a group of people, because they will also have the same ideals and experiences, and although they are dealing with different people, they will do the same thing.

Qian Rujun naturally hopes that the students of Xuetang Island are not scattered individuals, but a whole group.

She will constantly make them do all kinds of different things, and there are many things that they will do together. They have had many of these experiences before.

The purpose of getting them to do things together is to give them a sense of identity with the group.

Of course the students on Xuetang Island didn't, so they set off immediately, because Qian Rujun wanted to disperse the students on Xuetang Island, the whole Han.

The sooner a student completes the Savage training, the farther they will run.

And before they can go out, they must first catch the wild men and come back to train.

Qian Rujun didn't give them a set time, just let them find a satisfactory wild man, bring it back to brainwash Qian Rujun, and bring it to the space again.

It was up to them to train themselves, and this time, Qian Rujun didn't give them a direction, but just let them decide what their future followers must look like and what kind of training they wanted to give them.

If it is an ordinary person and is let out, of course, I hope that the closer the better.

may find an opportunity to shirk training savages with more skills before going out.

But the students of the school island are different from the people who like to cheat and play tricks, and they all want to run farther.

Especially since they all know that Qian Rujun has a genetic need for places they haven't been to, so the farther they go, the more likely they are to find new genes. Even if you can't bring them back alive, you can still record the location of new plants and animals.

This will be more helpful to Qian Rujun, especially if they can go deep into the jungle and draw the basic appearance of this place, so as to increase their understanding of the Han Dynasty in this era.

Dahan will have more knowledge of the geographical environment.

For the country, it is of great help to Qian Rujun.

Because what Qian Rujun wants to do most is to walk all over the mountains and rivers, even if she can't come in person, she hopes that the students of Xuetang Island will help her see it back.

Although there was no camera at this time, Qian Rujun had already taught the students of Dojima the principle of pinhole imaging.

Because the princess had already told them that maybe she had no choice but to walk around the Han openly, and now only in the places that did not belong to the Han administration, she had the freedom to walk freely.

What may affect the departure time of the students on School Island is their search for the wildlings.

Because this time it is not an all-round harvest, but to find some talents that they think are useful, so they must observe carefully.

And after the emperor's large-scale harvesting of savages, there are actually a lot fewer savages near Chang'an.

Even during the time of going to the forest garden, there was not necessarily an increase in the number of savages, so the students of Xuetang Island had to go further away to find them.

Fortunately, in this day and age, there are too many wealthy merchants who will occupy land beyond their means.

Many more people could not afford to pay the rent and became vagrants, and they did not even want to pay other taxes, so they fled to the wilderness.

As for how they lived in the wilderness, how they fought against wild beasts, and how they connected with other properties, Qian Rujun didn't know the actual situation.

Anyway, she was waiting for the students of Xuetang Island to bring them back.

Compared with the work of students on Xuetang Island, Qian Rujun's work is very simple. Just brainwash the people found by the students of the school island.

Now, Qian Rujun has saved a lot of points, and he usually can't use them at all.

But Qian Rujun was not idle during this time.

Qian Rujun actively carried out research work on motors, hoping to get a clearer concept.

Because Qian Rujun believes that if she doesn't understand it from the next generation, it will be very difficult for others to understand.

Sometimes it's not that the students aren't smart enough, it's that the teacher doesn't explain clearly enough

She has a lot of bright students, but she believes that these students have a lot of misunderstandings about the concept of motors, and she must gather them together and let them discuss these misunderstandings in order to make real progress.

But if Qian Rujun wants to be able to understand and integrate everyone's opinions, he himself can't be too ignorant of motors, so Qian Rujun suddenly has the motivation to struggle during this time.

It gave her the feeling of taking a college exam.

In fact, when people's lives are very fulfilling, they are basically not too painful.

Qian Rujun feels that when you have a goal to read a book, this book is not an object that she cannot overcome.

In the end, she finally had a clearer idea of the motor.

In fact, the motor is very simple, and the focus is on her application, but from what the students of Xuetang Island have developed, it seems that the people of Dahan have never lacked the concept of application.

As long as there is a demand, they will find a way to develop it, but they will not develop it, perhaps because they lack key technologies.

Once the concept of the motor was introduced to the private sector, they had enough motivation to create new applications.

This time their creation will improve many things in their lives, just like the village where the rotation of the waterwheel can be greatly increased by applying the rotation of the watermill to the loom.

It's just that the rotational force of the water can't be controlled after all, and in most cases, there is a problem of speed or slowness.

And the motor is such a thing, its rotation force can be controlled, but the motor made by the Han is very weak, and it takes a lot of buffer time, but when the Han people find a problem, I believe they will find a way to improve the technology, isn't it through improvement?

I'm just afraid that they will hide things with their brooms.

For Qian Rujun, some techniques should be hidden, and some techniques should be disseminated.

At this time, Qian Rujun suddenly thought of gunpowder.

Of several traditional Chinese inventions, the last thing Qian Rujun wants to touch is gunpowder.

But a lot of times, when she needs to do something, she thinks of things like gunpowder.

In later generations, gunpowder was a sharp weapon for engineering.

Without gunpowder, many things will actually take a lot of time, and even cannot be carried out, and if there is no gunpowder, the labor cost will become very high.

Qian Rujun knew that it was because she was unwilling to take out gunpowder, so Jiang Wan'er had to spend a lot more time on construction when she was expanding rail transit.

With gunpowder, it was possible to level the mountains.

It's just that the amount needed is very large, and the gunpowder also needs to be excavated from the ground with sulfur and charcoal.

These things are not too difficult to obtain for this era, and compared to other things, the minerals of these things are still available, but sulfur is only available in volcanic areas.

And in the area ruled by the Great Han, there is almost no such thing as a volcano.

In Qian Rujun's impression, where is there a volcano?

Or there is volcanic activity, and the nearest place is almost in the northeast.

Changbai Mountains in the northeast. However, the territory of the Han Dynasty did not include the Changbai Mountains.

If you want something like gunpowder, Qian Rujun must make the emperor have a little more ambition for the Northeast.

However, there are too few people in the Han Dynasty, and if the existing land is not taken by the rich, the most official, and the people with the throne, in fact, it will not be cultivated at all.

In Qian Rujun's philosophy, a person doesn't need such a large land at all.

Volcanic activity, mostly in the crustal junction zone.

The transition zone of the earth's crust is relatively large, close to the southwest direction, but most of the southwest direction is formed by the push of continental plates, and the thickness of the continental plates is relatively thick, which is not easy for volcanic magma to erupt.

Volcanic activity is relatively imperceptible in this day and age.

Unless it is in the Pacific Rim of Fire, in fact, several of the islands occupied by Qian Rujun are on the Pacific Rim of Fire.

With the exception of sandbar islands, almost all of the islands that can be formed along the coast are raised by the intrusion of the submarine plate into the land plate.

The fastest way to rise is the continuous squeezing of the plates, and the junction of the marine plate and the continental plate is prone to volcanoes.

This ring of fire around the Pacific was formed by the interplay of these marine and continental plates.

Of course, in this era, there is no such thing as the Pacific Ocean in people's cognition, and the sea that people know is basically just the edge sea next to the ocean. If they want to go to the ocean, unless they go around to the east from the occupation of Qian Rujun.

The beautiful island of the ocean is not only beautiful, but also the blue and dark sea.

Qian Rujun did not want to develop gunpowder, not because sulfur was difficult to obtain, but because gunpowder was a weapon for killing people in addition to engineering use.

Qian Rujun didn't really want to kill people, although Qian Rujun herself found out that she killed more people than most people in the world, but these people were not slaughtered by her own hands.

There are not many people slaughtered by Qian Rujun himself.

But there are many people who accept Qian Rujun's orders to slaughter others.

When I was in the grassland, there were too many people's lives, and because of the command of Qian Rujun, they were lost like this.

Once gunpowder is developed, it will make the individual's martial arts lose a certain amount of activity energy.

The function of gunpowder is more powerful than the individual's martial arts.

A commoner can kill a knight galloping across the steppe, as long as he can drop gunpowder on the other.

Of course, gunpowder was also developed in the Great Song Dynasty, but those gunpowders could frighten people at best, and their lethality was actually very small, so they were not paid attention to.

Firecrackers in this era were even formed by taking bamboo to burn.

Some inventions have been delayed for many years because they are not noted.

And the reason why this gunpowder can only set off firecrackers is actually the difference in the formula.

But Qian Rujun has never had a formula for gunpowder in her head, of course, if she wants to find the formula for gunpowder, it is actually very simple, because Qian Rujun's e-paper book has a lot of knowledge in it.

Among them is gunpowder, and according to the results of his inquiry, he has to exchange for gunpowder-related books, so the points he needs are not high.

"No, if gunpowder is emitted in this era, it is not a good thing for the Han, because the Han does not need to expand the territory, but once the people around them master the gunpowder, they have more ability to kill the people of the Han, gunpowder, but it can kill the braver, and it can also kill the weak. Because gunpowder is the best at killing people who gather together. ”

"But if you can have gunpowder, engineering development, it's easier to make progress. People don't need to cut down so much wood to make fires, to cook to build houses, to build houses with stones, and with more medicine, road construction will be much easier. ”

"If you want to get rich and build roads first, with more smooth roads, the scope of material circulation in Dahan will be greater, for more people, there will be more desire to produce, and a lot of manpower will not be wasted. ”

"But what Dahanli wants to solve before it develops is the problem of productivity, and if there is not enough food, people will definitely starve to death. On the whole, there should be no shortage of food in the Han Dynasty, but these rich people accumulate a large amount of grain in their own warehouses, and they are corrupt in the warehouses and do not take it out for others to eat. ”

"And in the future, when the population increases, there will not be enough food to eat, so the growth of food must be doubled with the population. ”

Qian Rujun was alone in the Qian family farm thinking about this serious problem, and she suddenly found that an ordinary girl could think about how to make the Han people better.

These things don't seem to be his business, at least in the twenty-first century, she has never bothered about them, only eats, drinks, and sleeps every day.

However, in the Han Dynasty, he took the initiative to think of these problems and found that he had the power to change all this.

Maybe in this era, she is proud, because she knows more things than others, and she can do more things than others, so she is proud unconsciously.