"Boohoo!"

Xiaowei is a little impatient, she can't wait to grow up quickly.

When the time comes, you can stay with your master and serve him.

"Don't worry, don't worry, I'll take a look first!"

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

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

"

For other things, it's easy to say that summer itself is the time for barbecue.

In addition, there were a lot of beer bottles in the space, so Yang Xiaotao didn't think much about it.

The last icon is a book, and the specific content is unclear.

At first he thought it was a barbecue stove.

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

Five thousand credits!

This is all just in time for upgrading sub-skills!

But considering the urinary properties of the system, you definitely get what you pay for!

The more credits there are, the higher the value.

Five thousand credits is enough to show how precious it is.

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

I just don’t want people to get it easily in such a short time!

Definitely good stuff.

It's just, 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 on the icon in the book.

Don’t think about the other strings, they definitely have nothing to do with Xiaowei.

And the one that can be somewhat related to the positions is probably this book!

Thinking of this, Yang Xiaotao looked at his credits. He was just over 10,000, but now he was about to cut it in half!

‘Do you want to use 5,000 credits to redeem 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 kind of book it was. After all, books also have colors and are divided into categories.

If he spends five thousand credits to buy a small book and some useless books, then he will have to think carefully about these unknown items in the future!

A stack of books appeared on 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 moved his body, raised his head in a daze, and then continued to sleep on Yang Xiaotao.

The two have been together for so many years, and what she likes most is sleeping in Yang Xiaotao's arms.

Neither cold nor hot, and still feel safe.

When Yang Xiaotao saw Ran Qiuye lying down again, he reached out and patted her out of habit, as if coaxing a child to sleep.

On the other side, Xiaowei flew into the space after seeing the book disappearing 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, whizzed out of the window and disappeared.

I guess my heart is hurt!

Yang Xiaotao couldn't comfort him, after all, he couldn't control the things in the exchange column!

Yang Xiaotao thought, but put his mind in space.

"Huh?"

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

"Introduction to Artillery Radar!"

Artillery radar?

Yang Xiaotao thought about it in his mind, and then continued to look down.

Reading each book one by one, even just the title of the book, allowed him to understand what he had exchanged this time.

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

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

But Yang Xiaotao also knew that it was all the wishful thinking of the director and screenwriter.

Most of the time, if you want to defeat the opponent, you need a long period of detection. This involves aircraft observation, scouts approaching for close inspection, and various means for testing.

Then it takes multiple attacks to knock out the opponent's artillery.

As for the artillery detection radar in the books in front of me, to put it bluntly, it uses radar waves to test the trajectory of artillery shells, and then completes the counterattack through calculation and testing.

At this time, if you are quick, you can complete the counterattack within one minute.

And if specific goals are given, the success rate is very high.

It's fast, accurate and saves ammo.

What a good thing!

Yang Xiaotao praised in his heart, but soon frowned.

"I don't object to letting me build this radar. After all, the Ordnance Research Institute also has projects, right?"

"But, why don't you just give me the drawings?"

Yang Xiaotao was a little speechless. In the past, people in the exchange column were directly given design drawings.

Just like the current engine development, isn't it just a room full of blueprints?

That's good. Instead of giving me design drawings, I give you books. Is this because I don't have enough time to read? Is it to remind myself to read more?

But how can I have time to read a book?

"Do you want to send it out? Let it be looked at by professionals?"

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 not finished yet.

This radar, at first glance, seems to be rather technical. It requires learning and a lot of professional knowledge...

If you study on your own, you won’t be able to fully understand it in a year or a half!

Yang Xiaotao thought like this and made a decision in his mind.

Leave it to Liu Xiangdong to send back.

As for where the books came from…

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

"This product is a personal item and cannot be borrowed from others!"

There is also a danger symbol below the small letters, and then two words written below.

self-destruct.

What does this mean?

Yang Xiaotao only thought for a moment and understood instantly.

“It seems like you’d better read and learn on your own!”

I realized clearly in my heart, and also determined that these books and materials should not be products of this time and space.

The mind came out of the space, felt Xiaowei's presence, and then fell asleep with his wife in his arms.

The next morning, everything was as usual in the village. There was a lot of people around the greenhouse and the business was in full swing.

This chapter is not finished yet, please click on the next page to continue reading the exciting content! Yang Xiaotao stayed in Yangjiazhuang for a week. With the efforts of everyone and the support of the people around him, especially when Xiaowei turned grief and anger into strength.
To be continued...