At this time, Cao Shuo continued to speak: "Immortality and ascension, this is just a fantasy in people's minds, and it will never be realized!"

Chen Li lowered his head and did not speak.

Although it is said that Chen Li now already knows that alchemy is probably a scam.

But to give up the hard work of the first half of his life, Chen Li is still a little unbearable.

After a long time, Chen Li said slowly: "What does Childe want to do, my rotten wood is probably not suitable here." ”

After speaking, Chen Li was about to go back, but Cao Shuo at this time was not panicked at all:

"Before you go, take a look here!"

After saying that, Cao Shuo just put the saltpeter and sulfur in a jar again according to the proportions in the text.

"Boom!"

Just a little heat, and there was a violent explosion.

"It's ......"

Chen Li heard a loud bang and subconsciously looked back.

In the next second, Chen Li was completely frightened by the scene in front of him.

The thick glass windows in the laboratory were directly shattered by the heating of saltpeter and sulfur.

This situation is too similar to the explosion of alchemy.

Cao Shuo smiled slightly, and said to Chen Li: "In your previous alchemy career, many of the materials in it were toxic substances, and long-term inhalation will cause damage to your body, but your alchemy process is especially valuable to me!" ”

"Value?"

Chen Li's dim eyes once again glowed.

And the scene just now really shocked Chen Li.

Before, Chen Li had always thought that his alchemy was for ascension and immortalization.

But Cao Shuo's demonstration made him see something different.

Although it was said that when Chen Li started alchemy before, he had also heard about the explosion of someone's alchemy furnace, but Chen Li didn't think too much about it.

But now it seems...... Chen Li also has his own opinions in his heart.

"Although you used to alchemy for immortality, you don't know, you have learned too much about these stones, and you will be my good assistant in the future."

Cao Shuo stood up and walked around leisurely, and then continued:

"Now, you know what you're used for, right?"

"Could it be...... Childe wants to use this thing to fight? ”

Chen Li was instantly clever, and instantly understood Cao Shuo's thoughts.

"You're right!"

Cao Shuo nodded, and said leisurely: "The main reason why I came to you is to study the two substances of saltpeter and sulfur, and measure accurate data to determine when they explode the most violently. ”

"Yes!"

Chen Li suddenly felt that the blood in his whole body was surging.

And Chen Li's distracting thoughts about alchemy before were completely left behind.

"If you have any friends who are as powerful as you, you are welcome to introduce them to me."

"Yes!"

Chen Li said again.

Cao Shuo looked at Chen Li in front of him, smiled slightly and said, "You can be busy in the laboratory now, and I will arrange a training for you in a few days." ”

"Huh?"

Chen Li suddenly looked at Cao Shuo in confusion:

"What is training?"

"Hahaha! What I let you know is not just about alchemy. ”

After Cao Shuo finished speaking, he walked straight out.

In fact, there are many things Cao Shuo wants to do.

The easiest point is to build a house.

However, in the Cao family, including Cao Shuo's own house, it was built with stone and earth.

Not to mention the cold in winter and hot in summer, it is also very prone to accidents.

Not to mention those civilians, who are generally thatched huts, and basically have to spend a lot of effort on the houses every year.

On the other hand, cement, this kind of material actually comes from a wide range of sources, and the most important point is that it is very powerful in defense.

If the city wall on Cao Cao's border was made of cement, it was estimated that Yuan Shao would be able to easily block it if he sent tens of thousands of infantry to rush over.

A few days later, Cao Shuo specially found Chen Li and gave him a vivid chemistry lesson.

This is also Chen Li's training, and the content mainly explains some basic chemical equations, as well as the changes of various elements in nature.

Chen Li listened to Cao Shuo's lecture and was simply shocked to the extreme.

It turns out that the world is made of elements?

Is the chemical composition of the human body exactly the same as that of other living things?

After the training, Chen Li seemed to be enchanted, playing with various things in Cao Shuo's laboratory all day long, and after a week, he gave Cao Shuo a few things similar to chemical equations.

And Cao Shuo ...... In fact, there are not too many things to prepare, and it is only enough for a few experiments, in order to let Chen Li give full play to his strength perfectly, Cao Shuo specially let his Flying Tigers go to the mountains for a stroll if they have nothing to do.

Speaking of Chen Li, although this person looks very melancholy, he is simply a genius in doing experiments, and Chen Li has always had a steady stream of interest in unknown things.

After another period of time, Cao Shuo saw that the laboratory could no longer meet Chen Li's experimental needs, so he directly asked his soldiers to take Chen Li to mine sulfur ore and saltpeter ore in the deep mountains and old forests.

Chen Li also followed his master alchemy before, and he was still very familiar with mining this ore, and knew how he should refine it.

Cao Shuo has also been studying chemistry frantically recently, and found a book on ore refining from the system's store.

After Cao Shuo learned it, he translated the words in the book into the popular language of the Three Kingdoms period, and then let Chen Li learn it.

"Hey, time flies so fast......"

One day, Cao Shuo looked at the rising sun and couldn't help but sigh.

Now, the development of the Cao family still needs time, and Cao Shuo has to think of new ideas in terms of mining ore.

"With the black **, the war will definitely not be a problem, but I don't know if Yuan Shao Xiao'er dares to come over again......"

In the next step, Cao Shuo's goal was to mine the metal to create guns and ammunition that could be shot.

But......

Even if Cao Shuo now has a world weapons encyclopedia, the development of the Cao family is still in a very backward stage.

It was a very long process from zero to one, and it took Cao Shuo a week just to come up with a complete set of ideas.

And among them, there are many detailed problems, such as the small parts of a certain gun, if you want to achieve a breakthrough in the problem, it will take at least half a year.

And the energy spent in it is even more unimaginable to ordinary people.

But at the same time, Cao Shuo thought that he was going to rely on these guns to crusade against the Western Regions, and he felt very happy in his heart.

Think about how those countries in the Western Regions treated China back then?

Now, Cao Shuo wants to change history and give those arrogant and arrogant countries of the Western Regions a taste of conquest.

But at this moment, Cao Shuo suddenly heard the voice of a herald from outside the door:

"Report! Cao Shuo's son, now Yuan Shao's army has arrived in Guandu! ”