So indirectly, when Qian Rujun was active on the island, he didn't pay attention to the cattle at all.

In retrospect, it seems that all the cattle on this island are gone, but it is not that they are missing, but that they have not been introduced.

When Qian Rujun lived on the island, he actually lived in an era of internationalization, and although many things were owned locally, many things were imported.

This is the case with so-called imports, which are often what they need the most, or that are noticed by businessmen.

After selling it, there is a market, so some things find that they can actually produce themselves, so they produce them themselves.

However, due to the relatively high cost of production on the island, there is no mass production, and it continues to be imported, because the price of imports is still slightly lower than its own production costs.

There are even people who are more treacherous, and when they see what their production costs are, they simply set the price slightly lower than their own, so that their profits are greater.

And the big man himself is also short of cattle.

However, this has nothing to do with the profiteers, when the Dutch introduced cattle, they wanted the people in this place to speed up production, and they could charge a little more money.

It is said that at that time, they were able to send two ships of gold back every year.

Although there is also a bit of profiteer, but the cattle they sell to this place are lacking in this place, and the price is not particularly high, at least at the beginning, the cattle must be used by very poor people, so these cattle are public before they are reborn into the next generation, but when they give birth to a large number of the next generation, they may become private.

Anyway, the introduction of species is an accident and an inevitability.

"Princess, it's raining.

It's morning, so why is it raining? It's not going to be another typhoon, is it?"

The students of this school island have become accustomed to rain every afternoon. If it rains heavily in the afternoon, he may not be able to do it, but it is only morning, which means that it is not normal, and the typhoon has impressed them too much.

So when he saw the rain, he hurriedly ran to Qian Rujun to find a way.

Qian Rujun looked at the sky, felt the direction of the wind, and recalled the weather conditions in the past few days.

Before a typhoon comes, there will be a series of weather changes, and this series of weather changes is basically relatively fixed.

The periphery of the low pressure is high pressure, and when there is a high pressure, it is not easy to rain, at least the sky is not prone to clouds.

Before the heavy rain, there will be a day or two of sunny weather, although the sky will be clear, but the wind will be stronger.

And the wind blows with a vapor, which is very abnormal when the weather is clear.

At this time, Qian Rujun was able to predict the typhoon.

The last time Qian Rujun couldn't predict it, it was because he hadn't encountered a typhoon for too long and had forgotten about the typhoon.

Coming down from the north, she basically thinks that in her life, she may not have anything to do with typhoons and earthquakes.

So she didn't feel much about these two things, the natural disasters that should accompany her life.

The first few days, the afternoon thundershowers did not stop, and the weather did not become hotter, but it was obvious that there were cumulonimbus clouds above, and there was no light at all below.

It's almost like night during the day.

Although it is not a normal rain phenomenon, it is normal for cumulonimbus clouds to appear in tropical places.

So Qian Rujun shook his head and said:

"It's not going to be a typhoon. It's going to be heavy rain though. Hurry up and pack up and get on the boat! Be careful that the water in the vicinity rises and floods directly. ”

"Won't it?"

The students of Xuetang Island were directly dumbfounded, they wouldn't be like this, they had to flee when it rained, right?

It seems safer to rain on land than on a boat.

At least on land there will be no stormy things, but on the shore it is difficult to say.

Thinking of the heavy rain that would have rocked people off the boat last time.

So far, those who have disembarked have never come ashore again, or where they have come ashore, they do not know.

Or maybe they will die forever at sea.

When encountering such a situation, even Qian Rujun could not save them.

The scene last time, the situation of people being thrown down is still vivid, and they are actually afraid in their hearts.

"You children of the north, you don't know what heavy rain is. ”

Qian Rujun couldn't help but say when he saw the frightened expressions of the students on Xuetang Island.

"Princess, you are also a child of the north. ”

The students of Xuetang Island were really angry, and the crowd began to gather, they didn't want to threaten Qian Rujun, but they worked together to express their opinions.

"Don't be unconvinced. You get on the boat, and we can get out of the rain by driving a little bit. Watch from the sidelines.

There are no water conservancy facilities in this place, so there is no problem with a light rain, but if it rains heavily, the whole place will be soaked in water. ”

Seeing that the other party really didn't believe it, Qian Rujun had to come up with something real.

That's why she asked everyone to pack up their things and come to the boat quickly, if it rains and doesn't flood, they will actually be safer on land.

"Won't it?"

Hearing that it would flood, as northerners, they had relevant experience.

In addition, the north is usually very dry, but when it rains, it is easy for the water to rise.

And because the land of Dahan is very large, the river often has to be left for thousands of kilometers, so as long as it is not a straight river, problems may arise in the middle.

When rivers bend due to topography, these bends can cause various problems due to other factors.

A lot of water often accumulates in one place, and as a result, it overflows.

Therefore, some places will flood from time to time, because the river has too many bends, and as long as the flow speed is slowed down, it is easy to flood when it slows down.

And it's not just this simple reason, the north also freezes, and once the frozen water starts to melt, the river flows from north to south, or from south to north, and the difference is very large.

However, their rivers move up and downstream, and often the rivers downstream have not yet melted, and the rivers upstream have melted first.

The ice in the south melts first, but the ice in the south is upstream, so it squeezes the ice in the north.

Then there will be broken ice, and then the broken ice will accumulate in one place and it will not be able to move.

In this case, the water will not be able to walk in the river and will have to spread, and after it spreads, there will still be broken ice in front of it and block it again, so the disaster will continue to expand.

Of course, the problem of standing water in the north is completely different from this place.

Because it rains every day, this place has always been able to accumulate a lot of water, and the land in this place is not unable to store water, but it usually goes to a lot of water.

"Do you understand the water drainage?"

Qian Rujun thought back and turned what was in her mind into a kind of knowledge that could be explained.

He didn't think much of it, but its principle was very simple.

"What's that?"

Since the water drain line mentioned by Qian Rujun is a scientific term in later generations, it may naturally exist in this era, but the noun is definitely different. When this era is named, it will make people feel very dizzy.

Because it is not known whether these names are newly coined, the objects they are named are often words that do not have a literal meaning at all.

This also means that Qian Rujun's education is not comprehensive enough, and what she is best at, the students of Xuetang Island don't even know, what she thinks is very ordinary in her mind.

"A place has been flooded, maybe some organisms with high aerobic demand in the water are not usually visible to the naked eye, this possibility is quite large, but we usually can't see it. That creature might just stay on the surface of the water and cling to all sorts of things.

Finally, stay in a place where you have been in contact with the water for a long time. will leave a trail.

You can observe that the trees below should have this circle. ”

When Qian Rujun was collecting things yesterday, he noticed that there were water conservancy lines, and he didn't particularly care about them at that time, because there were many places with water conservancy lines.

"So, I'll see. ”

After saying that, the students of the school island began to look for it, but the result of their discussion was that some of them went to inform the others to pack up and come back early.

Drain lines are not difficult to find, they are not deliberately hidden, and it is a common phenomenon, and they quickly find them.

Now they are actually very happy about the newly learned knowledge, perhaps because they have learned more than others, so often when the Han comes into contact with people, they will be bored with what others will know, they will all know.

"Princess, we've got them to pack up and get back to the ship. But I have a question. ”

"Say it!"

For the sudden transformation of the students of Xuetang Island into curious babies, Qian Rujun is more patient.

"The drain lines were found, but they were of different heights. ”

This is the opinion of many students on Xuetang Island, they think that the water surface should be the same height, why are the heights of so many water drain lines different, so they have doubts in their hearts, this doubt is not the doubt of Qian Rujun's credit, but the nostalgia of knowledge.

"Have you ever noticed how fast trees grow?"

However, this question is very simple for Qian Rujun.

"Princess, I see. Each tree grows at a different rate. Even if it's the same, it's not necessarily the same. Nature provides different growing conditions. ”

This observation ability is not lacking in the students of Xuetang Island, but they usually don't particularly care about it, so they don't think about it.

"I know, you don't know how to step up, it's hard to clean up when the rain falls. ”

Seeing the clouds in the sky, a large number of gatherings, the rain was already falling, so Qian Rujun urged the students of Xuetang Island to help the people below pack up their things as soon as possible.

"Ahh

The students of the school island hurriedly walked out.

Qian Rujun drove the boat away from the rain clouds. But she didn't go far, she wanted to let everyone on board know about the disaster that a sudden rain could cause in the tropics.

"Oh my God, it's raining up front, and it's amazing that we're not raining here. ”

This is what the princess used to say, the sun rises in the east and rains in the west, and the road is sunny but sunny. ”

It's not that Qian Rujun deliberately plagiarized the poems of later generations, anyway, she thinks that the poems she says now are not expected to be passed on to future generations, she just looked at the sky, felt something, and said it accidentally.

Fortunately, the people around Qian Rujun don't have the habit of taking notes in their hands, so basically this thing will not be passed on to future generations except for the memory of people, so it will not affect someone in later generations to create this thing.

Or, she wants to know what's really going on. Previous knowledge, without seeing the results with your own eyes, is just knowledge spread by others.

"Oh my God! ”

Also paying attention to the changes on the land, in fact, there are also the students of Xuetang Island and others, because they were urged by the students of Xuetang Island to pack up their tents and return to the boat, in fact, they are also very skeptical about whether it will happen, flooding, in fact, they are very skeptical about whether it will rain, but this kind of thing quickly becomes empirical, because when their boat comes out, they chase the rain clouds, and when they come out of the rain clouds, it just starts to rain.

"How do you know?" The student of Xuetang Island next to him had doubts about his emotion.

"Of course I know that I was on that tree yesterday and left a very big axe mark. One more point will be flooded. ”

If you want to live underneath and barbecue, you naturally need to cut some trees, and of course they cut not the trunk itself, but the branches next to it.

People with axes sometimes don't have special rules when they use axes, and there are still people who swing and chop indiscriminately.

"Like, I saw it too. Oh my God, if we stay where we are, we won't be able to fall down?"

"Thank you that we have a wise leader. ”

This accident made Qian Rujun's prestige even higher.

For those who can read the weather forecast, they have infinite admiration in their hearts.

For them, the person who can grasp the weather at this time is no different from a demigod.

Qian Rujun knows that a little difference in perception will eventually become a big difference.

After that, Qian Rujun would find a safe place for them to go ashore, and when they went ashore, they would go hunting, and after hunting, they would be asked to collect some food and some new animals and plants.

Qian Rujun will also take the initiative to disappear into the jungle.

In fact, she can collect more than a hundred people alone.

But now there are more than a hundred people helping Qian Rujun. There are more than 10,000 people who help in Dahan.

Suddenly, Qian Rujun noticed that there seemed to be a snake guarding something.

Tempted by curiosity, Qian Rujun approached the snake.