Scholars in the courtyard.

Chapter 1868 Artillery Positioning Radar
"Whoa!"

Xiaowei is a little anxious. She can't wait to grow up quickly.

By then, I can follow my master and serve him.

"Don't worry, don't worry, let me take a look first!"

Yang Xiaotao said this, then glanced at the items in the exchange column.

Items in the exchange column: Chicken skewers (5 skewers/minute), pork skewers (3 skewers/minute), lamb skewers (2 skewers/minute), beef skewers (1 skewers/minute), unknown book (5000 credits. 29:55)"

The rest is easy to say. Summer is the time for barbecue.

Plus there was quite a bit of beer in the space, so Yang Xiaotao didn’t think much about it.

The last icon is a book, but the content is unclear.

At first he thought it was a barbecue grill.

I smiled in my heart, then looked at the annotations at the back and my heart tightened.

Five thousand credits!

This is as good as upgrading sub-skills!

But given the nature of the system, you get what you pay for!

The more credits you have, the higher the value.

Five thousand credits are enough to show how precious they are.

What's more, there is a timer at the back.

I don’t want people to get it easily in such a short time!
Definitely good stuff.

That’s right, it’s too expensive.

"Owner!"

Xiaowei's urging voice came to her ears again. She didn't know what was inside, but she just had to buy it.

"I know, I know!"

Yang Xiaotao dealt with it in his mind, and then focused his attention on the icon in the book.

There is no need to think about the other skewers, they definitely have nothing to do with Xiaowei.

The only thing that could be somewhat related to the position is probably this book!
Thinking of this, Yang Xiaotao looked at his credits. It was just over ten thousand, and now it was going to be cut in half again!

'Do you want to use 5,000 credits to exchange for items?'

The system prompt sounded again, and Yang Xiaotao no longer hesitated, "OK."

Five thousand credits quickly disappeared from the system panel, and then a thick stack of books appeared in his hand. At first glance, there were more than ten books.

"I'll go, there are so many!"

Originally, Yang Xiaotao really wanted to see what the book was. After all, books have colors and are classified into categories.

If he spent 5,000 credits to buy a small book, and bought some useless books, then he would have to think carefully when facing these unknown items in the future!
A pile of books appeared at hand. Ran Qiuye felt something on his back and was about to turn over. Yang Xiaotao quickly put the things into the space.

The next second, Ran Qiuye stretched her body, raised her head drowsily, and then continued to sleep on Yang Xiaotao.

The two have been together for so many years, and her favorite thing is to sleep in Yang Xiaotao's arms.

Not too hot or cold, and still feels safe.

When Yang Xiaotao saw Ran Qiuye lying down again, he habitually reached out and patted her, just like he was coaxing a child to sleep.

On the other side, Xiaowei flew into the space after seeing the book disappear from Yang Xiaotao's hand.

The next second, Xiaowei's aggrieved voice sounded.

"Why? Why not?"

"How abominable!"

After saying that, he flew out of the space again, whooshed out of the window, and disappeared.

I guess he's emotionally hurt!

Yang Xiaotao had no way to comfort him. After all, he had no control over the things in the exchange column!
Yang Xiaotao was thinking, but he focused his mind on the space.

"what?"

Yang Xiaotao was surprised when he saw the title of the book at the top.

"Introduction to Artillery Radar!"

Artillery radar?

Yang Xiaotao pondered it in his mind, and then continued reading.

Reading one book after another, even just the name of the book, let him understand what he had exchanged this time.

In his previous life, Yang Xiaotao didn’t know much about this thing. He only remembered that it was used to test the trajectory of the artillery shells, and then infer the position from which the artillery shells were launched, thereby destroying the enemy’s artillery.

When watching movies in his previous life, Yang Xiaotao often saw a staff officer constantly gesturing on a map, then quickly reporting the location, and then the protagonist would shout, "Kill it for me!"

However, Yang Xiaotao also knew that it was just the wishful thinking of the director and screenwriter.

Most of the time, if you want to defeat the enemy, you need a long period of detection, which involves aircraft observation, close investigation by scouts, and various means of testing.

Then it takes several attacks to knock down the enemy's artillery.

As for the artillery detection radars in the books in front of us, to put it simply, they use radar waves to test the trajectory of artillery shells, and then complete the counterattack after calculation and testing.

At this rate, if we act quickly, we can complete the counterattack within a minute.

And if you give a specific goal, the success rate is very high.

It's fast, accurate and saves ammunition.

What a good thing!

Yang Xiaotao praised him in his heart, but soon frowned again.

"I have no objection to you building this radar. After all, the Ordnance Research Institute also needs projects!"

"But, can't you just give me a blueprint?"

Yang Xiaotao was speechless, because in the past the exchange column would directly give the design drawings.

Just like the engine we are working on now, isn’t it just a room full of drawings that we are given?
That’s great. Instead of giving me design drawings, I gave me books. Is this because I have less time to read and I want to remind myself to read more?

But I don’t have time to read!

"Do you want to send it out? Show it to a professional?"

An idea came to Yang Xiaotao's mind. After all, his energy was limited. He had been working on an engine for more than half a year, and it was still not completed.

This radar is technical at first glance, and requires a thorough study and a lot of professional knowledge...

If you study on your own, it will take at least a year or two to fully understand it!

Yang Xiaotao thought about this and made a decision in his heart.

Go back and give it to Liu Xiangdong to deliver.

As for the source of the book...

Yang Xiaotao was thinking about how to explain, but he saw a small line of words appear in the corner of the last page of the book.

"This product is a personal property and cannot be lent to others!"

There was a danger symbol below the small print, and then two words written below that.

Self-destruction. What does this mean?
Yang Xiaotao only thought about it for a moment and instantly understood.

"It seems that I should just read the book and learn by myself!"

I suddenly understood and was certain that these books and materials were not the products of this time and space.

His thoughts came out of the space, felt Xiaowei's presence, and then hugged his wife to sleep.

The next morning, everything in the farm was normal as usual. There was a lot of noise and bustle around the greenhouse.

Yang Xiaotao stayed in Yangjiazhuang for a week. With the efforts of everyone, the support of people around him, and especially with Xiaowei turning her grief and anger into strength.

All the greenhouses in Yangjiazhuang are planted with Artemisia selengensis.

In the greenhouse where the seeds were first planted, they have already sprouted, and the emerald green sprouts have broken through the soil, making the villagers very happy.

At least it wasn't in vain.

The replanting here was completed, and the exact news from the northwest also came over.

Affected by continuous hailstorms, after inspection, the loss of Artemisia selengensis planted in the northwest was found to be between one quarter and one third.

This is similar to what the old dean calculated at the time, and is much better than expected.

At the very least, it can ensure the pharmaceutical factory's use for a considerable period of time.

What's more, the locals are now rushing to replant.

As for whether we can catch up, it’s hard to say.

However, these are just trivial matters for the people in Yangjiazhuang. After they finished planting in the greenhouse, they started planting corn again.

Yang Xiaotao stayed in Yangjiazhuang for a week, sorting out the greenhouse affairs, and then took Ran Qiuye and Miaomiao back to Sijiu City.

Courtyard house

I haven't been back for more than a week, and the yard is still the same as before, with workers at work, my wife looking after the house, and a group of sensible and ignorant children.

The atmosphere in the yard is completely different from that in the village.

Here, if you have a stable job, life will be comfortable.

No need to get up early every day and work until midnight every night.

There is no need to worry about the weather tomorrow, nor to worry about not finishing the work in the fields and running out of food.

People living in courtyards think about the long term.

The people in the village are more concerned about the immediate concerns.

Perhaps this is why country people want to move to the city.

When Yang Xiaotao brought his family back, the yard naturally became more lively.

The neighbors gathered around and talked about what happened in the yard.

Upon learning that Yang Xiaotao had returned, Ran's mother brought her child here.

The three little ones hadn't seen their parents for such a long time, and they were very affectionate when they met.

But he soon recovered his nature and started playing in the yard.

Yang Xiaotao listened to the situation of the machinery factory. These family members didn't know much, but from the clues and the target of contacting the machinery factory, Yang Xiaotao was still able to grasp the situation of the machinery factory.

However, Yang Xiaotao chose to stay at home instead of going to the machinery factory.

This week, I only slept four hours a day on average, which was a huge burden on my body and mind. This is a good time to take a break.

Cuiping came to the backyard to meet Ran Qiuye. Yang Xiaotao was proud that Yu Zecheng had almost recovered and could not stay idle at home, so he went out to work!
Yang Xiaotao did not ask much about the joint working group, but from Cui Ping's expression, it could be seen that things were not going smoothly.

Otherwise, why hasn’t anyone from Shanghai come yet?
I guess there is no development.

Yang Xiaotao didn't ask any more questions. He just said something to Ran Qiuye, then rode his bicycle, picked up his fishing rod and left the courtyard.

When he arrived at the old place, Yang Xiaotao looked around and saw quite a few people fishing.

Although I haven't been here many times in the past six months, I can always see a group of people every time I come.

Whether it's for fun or to feed their family, there are more people fishing than there are trees around.

Yang Xiaotao even suspected in his heart that the fish in the water could grow so fast because of the feeding they did.

After finding a place with few people, Yang Xiaotao took out the fish food prepared in the system, and then put in place the bench and wooden barrel. Then he observed the water surface and adjusted the float.

After a while, Yang Xiaotao placed the fishing rod on a wooden stand. The fishing line was thrown far away and the float rose and fell in the waves blown by the wind.

Underwater, Xiaowei was swimming among the water plants, running to this side and that side from time to time.

The cheerful atmosphere infected the surrounding aquatic plants, stirring up the water bottom and making it turbid, forcing the foraging fish to stay away.

Soon, the anglers nearby felt a lot of movement underwater and the fishing float was swaying from side to side. They raised their rods from time to time, but all they caught were water plants.

Yang Xiaotao did not restrict him in this regard. He just let the little guy relax, relax, adjust his mentality, and continue with the next work.

But this way, the difficulty of fishing increases a lot!

Yang Xiaotao saw Yan Fugui standing up not far away and raising his fishing rod frequently. The smile on his face was defeated by disappointment again and again as he caught some water plants.

After looking at the fishing float, Yang Xiaotao withdrew his gaze and took out a book from his backpack.

Signal Detection Evaluation

This is a book about radar.

When he was in Yangjiazhuang, Yang Xiaotao had almost finished reading the book during his break.

Relying on my memory, I remembered most of the content.

However, even after remembering it, Yang Xiaotao still felt that there were many parts that he did not understand, and he could only remember a small part.

This also made Yang Xiaotao feel what it means that every different profession has a different world.

But it’s better to watch it than not to watch it.

At least you can have a basic impression of radar.

Yang Xiaotao plans to read all the books once, understand the general framework, and then read them carefully.

As for time.

Let’s set it at one year!

Opening the book and turning to the last mark, Yang Xiaotao immersed himself in it again.

The wind blew, the trees behind me rustled, the hanging fishing line was bent by the wind, and more ripples appeared on the water.

"Ding, the host has finished reading "Signal Detection Evaluation" and obtained 15 credits!"

As Yang Xiaotao finished reading the last page, the system prompt sounded on time.

Yang Xiaotao closed the book and a look of "as expected" appeared on his face.

"It's really rough! This level is really accurate."

"But compared to when I first read Water Margin, there are ten more points."

“So, the quality of this book is still very high.”

Yang Xiaotao understood that he had to continue reading this book and continue to comprehend it.

He put the book back into the space, stretched his neck, checked the time, and said to Xiao Wei in his heart, "It's time to get down to business!"

The next second, Yang Xiaotao picked up the fishing rod and shook it hard. A one-foot-long carp broke out of the water, attracting envy from those around him.