Hearing the three words of the allegiance letter, Yan Hega, who was eating happily, suddenly hung over, and the food blocked his throat and made his face red.

At first, he just thought about how to get out, but he didn't expect Jiang Xingchen to believe in him so much and let him go so easily. Now he finally understood.

The allegiance book is known just by listening to the name, which is to let yourself set up a note and be loyal to Jiang Xingchen. This thing is like a sharp knife hanging above his head, with Wang Sun's temperament, if he sees this thing, he will definitely kill himself on the spot.

Even if he went back and immediately explained to Wang Sun the truth, Wang Sun didn't believe it. You can write a letter of allegiance to Jiang Xingchen in order to get out, and then you can betray me if you really encounter any life crisis in the future.

In other words, with this thing, Jiang Xingchen is equivalent to holding his lifeline, and he can finish him anytime and anywhere. And if he wants to live, the only way is to obediently serve Jiang Xingchen in the future.

In an instant, Yan He figured out all the power, and his joy suddenly turned into grief and indignation. Coupled with the fact that he was stuck in his throat by food, he was so choked that tears came down at that time, and his eyes rolled white.

Jiang Xingchen was stunned and muttered, "As for it, the reaction is so big." ”

The old man and Zhao Danqing twitched the corners of their mouths behind him, as for it, do you say it. Yan He has a good mentality, and if he changes someone, he may have drawn it at that time.

Seeing that Yan He's face was a little purple, the old man hurriedly came over, slapped him twice on the back, and helped him smooth the stuck food.

After finally relieving himself in one breath, Yan He fell to his knees and cried, "Lord Jiang." Don't bring such fun, please let me go!"

Jiang Xingchen's face drooped at that time. I said I'd let you go, and you agreed to obey me. Why, when I heard some letters of allegiance, I regretted it, right?

"It seems that you still don't want to be used by me! In that case...... Jiang Xingchen said, and said to Zhao Danqing: "Your hands have been itchy for a long time, don't be too ruthless, just be the same as that shopkeeper Liu!"

Saying that, Jiang Xingchen didn't even look at Yan He, turned around and walked out.

"Don't~" A miserable howl came from behind, and then Jiang Xingchen felt a gust of wind rushing to his thigh, obviously Yan He made a move to hug his thigh.

At that time, Jiang Xingchen flashed. Ling Yanhe pounced.

"Lord Jiang, I was wrong! I wrote, can't I write, don't discount my leg......" Yan He regretted what he said just now, isn't that looking for his own death. If you write a letter of allegiance, you can live a few more days, and if you don't write it, you will die now, and fools know how to choose.

"Don't be reluctant!" Jiang Xingchen said with a smile.

"Don't force ......" Yan He squeezed out a smile on his face and swallowed all the bitter tears into his stomach.

"That's good!" Jiang Xingchen smiled again and lifted Yan He from the ground with his own hands. He sat down on his chair and ordered someone to bring a pen and paper.

Yan He took a deep breath and finished writing his allegiance with trembling hands. At Jiang Xingchen's suggestion, he wrote some hatred for Wang Sun for discounting his legs.

Wait for Yan He to finish writing. Press the mudra. Jiang Xingchen took it over and looked at it carefully, nodded and said, "Okay, we will be our own people in the future!"

"The devil. Who is your own person with this sinister bastard, and sooner or later you will be played to death!" Yan He was about to scold Jiang Xingchen in his heart. But I still have to smile on my face and nod yes.

When I got back, I said I had run away. If you haven't been caught, you don't need me to teach you!" Jiang Xingchen said.

"No, no!" Yan He hurriedly shook his head, can he still do such a little thing! Then he asked worriedly: "Lord Jiang, what about those Nari sacrifices?"

Of course, Jiang Xingchen knew what he was worried about, and the three sacrifices with him had seen him arrested.

"The Sacrificial Empire may execute a few recalcitrant ones! The ones with you are among them...... For the rest, I will hand them over to the Futeng tribe, and the Great Futeng will go and negotiate with Nari!"

Yan He grinned when he heard this, and a cold breath appeared on his back: "Ruthless! It's too ruthless, Fu Teng is Nari's biggest enemy." Hundreds of sacrifices were handed over to him, and Da Futeng didn't know how to extort Nari......"

Later, Yan He couldn't eat anymore, how to say it after going back, how to explain it to Wang Sun, this is still a problem. Of course, Wang Sun was happy that this plan succeeded, but the key was that it failed, and hundreds of Nari sacrifices were also put in. If Nari is in a hurry, he will certainly not have good fruit to eat.

Jiang Xingchen couldn't control these things, and when the matter was done, he directly asked people to send Yan He to Dali and let him go back alone.

After Yan He left with bitter tears, Jiang Xingchen found a gap and ran away, leaving the old man and Zhao Danqing in place.

Originally, the two of them had made up their minds and asked Jiang Xingchen to make a good meal to treat the two of them. I didn't expect this guy to run like a thief.

"Insidious, ungrateful, crossing the river and demolishing the bridge......" The old man and Zhao Danqing scolded at that time, and blurted out a series of adjectives.

Jiang Xingchen, who came out, could completely think of the way the two of them were scolding now, shaking his head and smiling bitterly.

It's not that he doesn't care to cook a meal, but that there are really a lot of things waiting for him now, and he doesn't have the time.

When he came to the research institute, Jiang Xingchen changed into a white coat and entered the real room. The rules here were set by him and Xian Ning, and he couldn't violate them himself.

Looking at the dozen or so people who were busy with all kinds of real things with their heads down, Jiang Xingchen nodded with satisfaction. Now this place finally has a little bit of the real yàn room of the previous life.

When Jiang Xingchen saw Xian Ning, she was analyzing the composition and properties of several ores, and whether they reacted with each other. The notebook next to her was full of dense real yàn numbers.

Now Xian Ning is very satisfied, and with the study of various minerals, more and more novel phenomena have been discovered, which she could never have imagined before. The door that Jiang Xingchen opened for her made her truly enter a more wonderful world.

Don't look at the fact that the real room and the research institute are just burning money, but she believes that she will soon be able to research something that can be applied to life and create more value.

"Xingchen, I'm back!" It wasn't until the real yàn at hand was busy that Xian Ning saw Jiang Xingchen, hurriedly packed up the utensils in his hand, and beckoned him into his office.

Jiang Xingchen came here to see the current progress, mainly to ask about the progress of Xianning's group of children, only when an echelon of technical talents is formed, the city can be built in the future. Otherwise, how many things could he and Xian Ning invent if they were exhausted.

Xian Ning also attaches great importance to the education of these children, and tells her in detail about the courses she has arranged, as well as the children's learning progress.

What surprised Jiang Xingchen was that Xian Ning was very familiar with these children, many of whom were very familiar. Obviously, I have a lot of contact with and know the strengths of these children.

Jiang Xingchen nodded with satisfaction, he now found that he was more and more inseparable from Xian Ning.

In the end, Jiang Xingchen told Xian Ning to pay attention to rest, pay attention to maintaining her physical condition, and her injuries must not recur.

Xian Ning smiled and nodded, now that her condition has not deteriorated, she is already very satisfied. Originally, she expected that she would only have two years to live, but now it is more than two years.

And, now that a whole new world has opened up for herself, she certainly pays more attention to her body......

Leaving Xianning, Jiang Xingchen went to see the rubber that had been transported. It's in the cellar in the back mountain, where the temperature is much cooler than outside, and it is just right for storage.

More than a thousand wooden barrels, sealed with beeswax and hides, filled the cellars.

The work of refining raw rubber is very complex, requiring a lot of realization, and the machinery required for plastic refining alone is not simple. He didn't know anything other than carbon black. The machinery that is pressed in and out in the back is not so easy to get, and it requires a lot of real yàn.

If it was a manual machine, Jiang Xingchen would not be worried, his precision curved array had already developed to perfection, and even hollow needles could be made. You must know that the iron pipes in the blacksmith's workshop are all semi-circular butt, and seamless pipes cannot be made.

However, the machine for refining raw rubber cannot be artificial, and the first thing to solve is the power problem.

In the beginning, he envisioned the use of hydrodynamic or wind power. However, this year's severe drought has caused the river to drop and the water flow to slow down, making it difficult to drive water drainage. And summer and autumn are the time when the stars lead the wind at the least, and it is obviously not possible to make zuò windmills.

In this way, he has a problem, if he wants to make rubber products, he first needs to solve the power problem.

"The question of power...... Steam engine!" In fact, from the time of temperature sensing and pressure control, Jiang Xingchen thought of studying the steam engine. But the world has never found coal, which makes him afraid to start. You can't burn firewood and charcoal all the time, it will cost a lot!

On the other hand, the steam engine was a leap forward in the previous life, and it was also a transition from the old world to the new world, and its significance was quite heavy, and he was a little less confident in himself.

But now, without motivation, he really can't start refining rubber. He couldn't make tires, conveyor belts, rubber seals, etc.

And once the steam engine was developed, it was definitely a revolution. A variety of industries such as smelting, manufacturing, and mining will develop in a long way, as well as transportation. The thought of the long train speeding on the tracks, Jiang Xingchen's eyes lit up.

But after a moment, his expression was a little depressed, there was no coal! it was impossible to use charcoal to supply such a huge amount of heat. He wondered why there were trees and charcoal in this world, but there was no coal. Isn't coal also charcoal, it contains other elements?

"Forget it, even if it can't be applied on a large scale, it has to be studied, at least the power problem is solved first. Good research rubber products!" Jiang Xingchen made a decision, immediately left the cellar, returned to the lord's mansion and began to write and draw!(To be continued......)