Jinmai County is also a swampy land, and less than 1 percent of the places that can be exposed to the surface and are not affected by flooding all year round. Pen "Fun" Pavilion www.biquge.info

It is almost impossible to eliminate the area of water. However, it is possible to dig low and fill high, and even make a plan to make where to fill in the high and where to dig the ground.

Moreover, the muddy soil that needs to be dug is not deep, and people can dig ten feet of ground a day.

The land can be used for a long time.

At this moment, Qian Rujun's plan for Jinmai became clearer.

The operation in the water was not too smooth, and the people who went into the water fished out a lot of beautiful stones, but they did not have the kind that the e-paper book wanted. Qian Rujun felt very troubled, and thought about it, the bottom of the river in this place is estimated to have been selected, and if there was a celestial crystal, it might have been snatched away long ago, or it would have been sent to the feudal country.

These feudal princes are all idle and idle masters, although they have more power than the feudal masters of the Song Dynasty and Ming Dynasty in later generations. It's hard for these people to spit out what they swallow.

From the picture, Qian Rujun can imagine that the celestial crystal is estimated to be a gem in this era, because the appearance is not bad. The crystal structure is very good.

Suddenly, Qian Rujun remembered that the e-paper book pointed to the river basin, not the river in front of him.

But how big is the valley of the river? Do you have to search for the past?

If you want to ask about the terrain, you can only find river workers. Otherwise, it is an elderly person who has been in contact with water all year round. It is impossible to know the complete watershed without walking through it entirely.

In Dahan, it is not easy to draw a map. There are too many map tools in later generations that have not yet been invented in this era. The Han court also did not allow the people to get hold of the map.

Cartography is the royal study in the Han Dynasty. All I learned were national defense secrets. It can't be moved easily.

The same is true of river workers, who are not river workers, and they are not easily exposed to this knowledge. Even if several rivers flood every year and need to be repaired, no one wants to expand river engineering.

In addition to rivers, the most important thing for the country is probably the direction of the mountains. At this stage, the most important place is the Great Wall area.

Although during the Qin Dynasty, several sections of the Great Wall were repaired. But the Great Wall was really built vigorously in the Han Dynasty, or after Emperor Wu of the Han Dynasty.

At this stage, Dahan is recuperating.

The chaos at the beginning of the Han Dynasty caused too many people to die. Even now, there is no complete record, and there are still many people who live in their peach blossom paradise and have not been dug up!

Think about the future generations, there are people who hide in the mountains of Southeast Asia for 30 years, and finally are found to return to their hometowns.

After all, at that time, we had to hide from the war, and many of them were hidden places and did not interact with the outside world.

However, the lowest level of the river management unit is the county's water Cao Pengshi. You have to go to the county seat to find the history of Shui Cao Peng.

Shui Cao Pengshi's work is a bit special, if you are serious, it is impossible for Shui Cao Pengshi to stay in the county office, he must be wandering around. Visit the river. No matter how small a county is, there are more than a thousand miles in radius. Once Shui Cao Pengshi walked outside, there were no mobile phones in this era. Nobody can be found.

What's more, it's a bit far to get to the county, and you have to take a detour.

At this time, something flashed in Qian Rujun's mind, that kind of thing, she had watched her previous boss play.

Unmanned aerial camera.

However, Qian Rujun is not thinking about an unmanned drone now, but an aerial camera that she can ride.

If she can really get an aerial camera that she can ride, not to mention solving the problem of the Xuhe River Basin, her means of transportation can solve it.

Although there are many parts of an aerial camera, it is not impossible to be formed in one piece, right?

Why do you want to become a ride-on aerial camera, it's one thing to be in a hurry, and the most important thing is that Qian Rujun doesn't want to leave the e-paper book.

You must know that if it becomes an unmanned aerial camera, with the urine of an e-paper book, it must not be able to change into a remote control that needs to be separated from the body. Then the e-paper book is really uncontrollable, what if it is picked up by others?

Qian Rujun's idea of turning e-paper books into aerial cameras was out of control once it was generated.

Let the boat sail back, settle the account with the sailors who fished for the stones, and make an appointment with them for the next time, and when they come over next time, they can go directly to the river valley to collect stones.

Naturally, he couldn't do experiments at night, so Qian Rujun waited for the next day, and then set off to go outside the village, the village is now very large, and Qian Rujun ran far away to find a place where there was no one around.

She immediately turned the e-paper book into a manned drone and sat in it, however...... Again, there is the question of motivation. The power generated by the solar panels is not enough to carry Qian Rujun into flight.

Qian Rujun stared at the solar panel, and then looked at the integrated battery, and suddenly realized that this was a battery that could store electricity, but it was in a low power supply state at this time.

The battery is advanced enough, and it also indicates how much it can be charged now and how long it will take to recharge.

Qian Rujun found that it would take 24 hours to fully charge the manned drone and make it fly.

During this time, she had no way to return to the space.

But can't you just take the drone back like this? The solar engine should be most effective under the sun?

Then she could not go back to the village and find an inn to nest in and wait for the battery to be filled.

Qian Rujun gritted his teeth and thought, "Forget it, it's not that I haven't slept in the wild." ”

There is also a tent in Qian Rujun's space!

It's just that she's a little kid sleeping in the wild and it's a bit adventurous.

In fact, it's okay to encounter wild beasts, but what I'm afraid of is meeting people.

There are still some pastures nearby, and Qian Rujun felt that it was possible to be on someone's private land, so he had no choice but to turn the e-paper book back and let the black cat run a little farther.

Running to a place, there were a bunch of mosquitoes, weeds all over the ground, and there was not even a road, Qian Rujun finally asked the black cat to stop. It's unlikely that people will come and go in such a place. Don't say it, the mosquito word can bite people to death.

At least, she knew that there were at least a dozen swollen bumps on the black cat. Qian Rujun smeared the mosquito repellent of the Bo family on his body, and only then did he dare to come out.

Quickly open the tent. Then began to turn the e-paper book into a manned drone and began to bask in the sun.

Qian Rujun hid in the tent and read. Novels and science books are intertwined. If you don't do this, Qian Rujun probably won't be able to read these science and technology books.

When the e-paper book is fully charged, Qian Rujun can finally come to the sky and have a bird's-eye view of the earth.

This is the first time that Qian Rujun feels the magnificence of mountains and rivers after coming to Dahan. All along, she only saw dirty, messy, and dangerous. After all, the beast is there, who is in the mood to take a good look at the scenery. Mosquitoes alone are enough to stand it.

It is not for nothing that infectious diseases such as smallpox, cholera, and malaria would be prevalent.