Yu Youzi asked Lan for the three or six chess pieces that Lan had packed up, saying that he was pondering alone at night, so that he could cover up the lights that had been on, and he would start studying again after returning to the curator's office. The pen "Fun" Pavilion www.biquge.info about the production process of blue oil is a book, and the basic processing involved, the ecology of various raw materials, the provenance, and the collection are several other books - as for the name "blue oil", Yu Youzi came according to his own habits, in fact, the real name is called extractive compound blue liquor, but according to the habits of other universes, the fuel of the engine should be called oil, so in order to be in line with all cosmic cultures, it is very appropriate to translate it as blue oil.

As for the word "blue", whether it is "blue oil" or that or something blue liquid, it naturally refers to the color of this liquid-type magic material.

In addition to the dictionary, one of the engineering books details the whole working principle of the internal demon engine, which is fundamentally different from the internal combustion engine, the so-called internal combustion engine driven by burning gasoline, its physical essence can actually be called an explosion, gasoline is sprayed into the cylinder in the form of a mist, mixed with air, the spark plug ignites, and the gas in the cylinder expands violently to push the piston to do work - the instant violent expansion of the gas is a kind of explosion.

And the reaction in the inner demon machine is not to ignite the blue liquor and explode, because there is no rubber and no chemical products in this world, so there is no piston and industrial engine oil that cannot provide a high degree of tightness, and if it cannot be sealed, it will not be the explosion in the cylinder to explode outside, and it is a question whether it can explode violently enough. In short, the inner magic machine is not a device that converts chemical energy into mechanical energy, it is essentially the same as Shi Jing, it converts magic into mechanical energy, but the process is a little more intense.

Because the stone crystal directly allows the magic power to run in the crystal to produce a magic effect, it is to carry out a process of extracting magic power from the magic material outside, and extract the magic power in the casting material through the magic pool and charge it into the charging stone crystal. The essence of blue oil is actually a kind of magic material, the leaf juice of the star maple leaf is an important raw material for the oil liquefaction, the inner magic machine integrates the process of extracting magic power from the outside, and omits the steps of the magic array to produce magic, and the simple and crude "burning" off the material releases a high concentration of magic power to directly impact the swirling network structure made of highly sensitive magic materials, and the structure will release energy when it collects enough magic impact, and its manifestation is to push the transmission rod to start working externally......

The whole process is quite complex, and the engineering books are not mainly about basic physical topics such as materials, magic, and mechanical work, or what they call alchemy, but mainly about geometry and structural strength.

It is inevitable that each major is divided into very detailed parts, and it is impossible for the earth to write a book from how to collect oil to process and refine it into gasoline to the principle of the engine to the overall structure of the car, so that an alien can build an industrial chain covering all industrial projects by himself after reading it.

For example, the "extractive compound blue liquor", naturally there are also non-extracted, many kinds of blue oil correspond to different types of internal demon machines, and the maximum power consumption with the extraction type is also the largest, which is generally used in military products and heavy machinery.

Suffered the loss of the wrong major, or the loss of not fully mastering the language at the beginning, Yu Youzi's selection of books is a bit wrong, and the style of writing is a bit of a popular science nature, now what I need is the kind of professional textbooks, and even scientific research reports and papers, and now I have learned some basic industrial technology on the side of Chickland.

I wanted to get some books on tank manufacturing engineering technology, but now I have not only the principle book of the inner magic machine, but also a tank driving textbook.

The reason why I want to understand these techniques is for two purposes: first, I want to see if I can borrow them from the armored warriors, and if they are more powerful than the armored warriors, they can simply use them directly, in order to prepare for dealing with the real sealing beasts on the other side of the Karelian Mountains. 2. There is no doubt that Assaberg's problem here will also be solved by fighting, and according to him, this war is a means of understanding the tools, and this understanding is the understanding of the direct practical stage, and now reading books and checking materials is understood theoretically.

After a while, I finished the book in hand, and was about to pick up the book again, when there was a sound outside the window, and the window that was locked from the inside was actually opened, it was a magic "lockpicking", this trick was also used in Dunhele's house. The window was carefully opened in half, and two gray figures flashed into the room.

Yu Youzi instantly analyzed all the possibilities and countermeasures in his mind, and finally did not open his mouth to call, but quietly looked at the two people who flashed in, although they were both wearing long sleeves and long pants and special forces hoods, but the very eye-catching convex and backward figures still exposed the identities of the two girls.

"Sister, how about my instant spell?"

"Okay...... Now isn't it time to say who are you, our liaison?"

After the two jumped into the house, the younger sister didn't seem to notice Yu Youzi in the pile of furniture, and the sister looked much more careful, and the gun she had been holding in her hand pointed at the head of the sitting boy.

Although it was the first time he had heard it, Yu Youzi instantly understood the language they spoke, or the official name of the language was "Wind Language".

"Wow! There's actually a person here, hey, it's not the liaison we know...... " My sister hurriedly took out the pistol in the holster and pointed it at Yu Youzi, seeing Yu Youzi's heart tremble for a while, the corners of her eyes jumped, for fear that she would not be able to hold it steadily, and hurt herself: "Tell me quickly, who are you, we are not easy to mess with!"

Yu Youzi raised his hand, and the two people on the opposite side hurriedly shrank back. The younger sister patted her chest with her free hand and leaned in a whisper to her sister, but Yu Youzi could still hear it: "He's surrendering, right? ”

It seems that no matter what universe it is, as long as it is a universe that exists in people, it is a non-hostile gesture to raise your hands so that the other person can see them.

Sister: "Tell me, who are you, our liaison, why are you here, do you have any accomplices, Hicklands?"

Sister: "Yes, yes, tell me if you're from Hickland...... Sister, he doesn't look like Hickland. ”

Sister: "Don't make noise, make noise again, cough hum......" I wanted to say that if I was noisy, I would be spanked, but thinking about it now, it was a very serious scene, and I was almost taken to a strange place by my sister, so I quickly stopped and turned the conversation back: "Answer quickly...... Wait, do you understand what we're saying?"

My sister suddenly said, "Oh! It turns out that he can't understand the wind language, so he is silent for a long time!"

Sister: "I'm looking at him, and you're going to tie him up." ”

Sister: "Understood!"

The two of them had been standing at the window, and they were outside the lantern light due to the obscuration of a pile of furniture, so they couldn't see their faces clearly except for the basic outline, but they could easily see Yu Youzi sitting next to the light, and the only thing they knew for sure was that the pistol they were holding was very different in appearance, but it should be the pistol of Yao that they had seen in the amusement park Nessus Hotel.

In fact, you don't have to think about it to know that there will be no one else except the Wagu Nagu army who need such a secret operation now, and the reason why it has been silent is to collect the pronunciation of the wind language, which is different from the Pasi language, the Klan language and even the Huai language have been heard a lot, and the wind language is now the first time to hear it. Fortunately, there is a sister who talks a lot, so that Yu Youzi now barely knows how to adjust his vocal cords, tongue, lips, and breath to produce this wonderful and tactful language with the wind, and now that he heard that he was going to be tied up, he had to speak in his half-baked wind language-

"Hello!" Yu Youzi opened his mouth and the first wind language was indeed this standard greeting word: "No, it's you guys!"

The younger sister had already withdrawn the pistol and pulled out the rope that had been prepared, and when she heard Yu Youzi's strange tone, she said strangely: "Hey, he will say our words!"

As she spoke, she put away the rope and wanted to relax her vigilance and walk over, but was stopped by her sister: "Wait a minute, his pronunciation is very strange, it's not from us!"

The atmosphere that had just eased was tense again.

"But I'm not your enemy either, you see, I'm black-haired...... In short, you see that I didn't scream and didn't attack you at the first time, which means that I am not ambushed here, so can you put away your weapons first, let's talk, and see that you are not going to kill innocent people, maybe I can help you?"

Yu Youzi's analysis of their personalities through their behavior and language was correct, and the atmosphere gradually relaxed, only to see that after his sister hesitated for a while, he lowered his pistol, but he didn't put it away, glanced at his sister, and walked to the brightly lit place at the table together, and then Yu Youzi's eyes lit up- What a delicate pair of twin sisters this is, exactly the same pointed chin, the eyebrows and the thin corners of the mouth constitute a different face shape from the human beings they have seen, and the Erin clan is also very delicate because they are all small and small, with some doodoo cuteness. Their figures are also very slender, only half a head shorter than Yu Youzi, they can't be considered plump, but they are more material than Xian Ruola, and they are perfect under their height.

"You can tell me why you're here. ”

"Is that the signal you put it?"

The younger sister jumped to Yu Youzi's side and leaned over and spoke.

"Yo!" the sister called out and pulled her sister back again.

But Yu Youzi has obtained enough information, and after a little thought, he figured it out: they came in from the outside, and they could be used as a signal to the outside world, and what they did was only the light that came out of the third floor of the library, so now the problem in front of them is simple, and now there are two sets of solutions to choose from:

1. Fool them into saying that they are actually entrusted by the "liaison" to come and send a signal, deceive them into trust, and then lead them into a trap and arrest them, or, not so badly, tell them that the situation has changed, and fool them into leaving on their own. Second, it is to tell the truth, tell them that everything is just a misunderstanding, no one is sending any signal, everything is just a coincidence. If you tell them the truth like this, you don't know what will happen to you, after all, this is a battlefield, and the two sides can be said to be in two camps...... It can be ruled out.

The battle here is obviously different from Carrelian's side, Yu Youzi, who went to repair the tank in the square and turned around, saw very clearly, whether it was emerald green or black and red tanks, as long as it was wreckage, it would be completely destroyed, and the two sides were fighting for their lives, Yu Youzi believed that they would not have the kind of treatment that Xian Ruola and Hygilia had, and Diri, who had the unique bloody atmosphere of a soldier, was not Harkin......

Yu Youzi frowned slightly, he really couldn't bear to see the twin girls hurt in any way, and he didn't want to be hurt by them.

From their brisk steps and postures, it can be seen that these two women have a high level, but they move casually, completely ignoring the shooting angle, and the blind spot of the layout of the room, so they go straight to their side, and it can be seen that they have not received professional combat training...... In the course of their few steps, there are at least three dead corners that can ambush and sneak attack the two of them, so much furniture in the room, squatting behind them and waiting quietly can appear behind them......

Since they are so stupid, then choose the second plan. After thinking about it in the blink of an eye, Yu Youzi gave up and said honestly: "Signal, the signal you are talking about is the light on the third floor, right? I think about it, it should flash three times, and then light up again after a long period of darkness?"

Sister: "Yes, how do you know our code? No, you answer my previous question first, who are you first?"

Yu Youzi: "I'm just a foreigner who happened to appear here, you should know by looking at my hair." ”

It was also because their black hair showed that they were not Hickland humans, that they relaxed and decided to talk to them with doubts. The exclusive nature of the Hickland Empire, when put to good use, can undoubtedly bring all non-Hicklands closer together.

Sister: "It's not really a Hicklander." ”

As he spoke, he bypassed his sister and ran behind Yu Youzi and picked up his hair.

"It's true!"

Sister: "Yo, come back, don't mess around, my sister is asking...... Uh......"

Obviously, she had asked too many questions before, and she had forgotten where to start, but Yu Youzi remembered it very clearly: "Ahem, first of all, I am here as a 'foreign observer', and the Hicklands invited me to come here to observe their war......"

My sister snorted coldly: "Come and see our miserable appearance, look at our jokes! I'm angry, sister, let's teach this black-haired one a lesson!"

Yu Youzi: "Don't, wait until I'm done answering your sister's question first!"