But... Knowledge that can conquer this world.

Nancy felt that even Master Baier Walker of the Gmansis Secret Pua would not dare to say such a thing.

But Nancy didn't think Lu Cheng was joking, she had some difficulty trying to lift the table in front of her, but her strength was very small, and it took less than two seconds for Nancy to feel a little dizzy in her head, so she had to put the table down.

During the time when the Scarley Blood Crystal Beast Plague was raging, her body became very weak.

At noon, she followed Lu Cheng for a while and returned to the camp, and Nancy felt out of breath.

"Where are you going to move the table?"

Elena easily lifted Nancy's table next to her, holding the table and asking Nancy.

"Just a little bit earlier, thanks to Her Majesty Elena." Nancy looked at Elena's relaxed appearance with a little envy.

Elena put down the wooden table in the row in front of Nancy, justly... It is on the aisle separated by wooden tables.

"Can't you see the blackboard where you sit?" Lu Cheng asked.

"My eyes... Cursed, it may be the reason for reading too much knowledge, I can't see things too far away. ”

Nancy hesitated for a moment but told Lucheng about it, which was not a fatal weakness in her opinion.

"Isn't this short-sightedness?"

Lu Cheng knows that girls who love to read may not have good eyesight, and the curse that Nancy said should be a symptom of myopia, on the other hand, Elena... The girl sat in the last row of the classroom and could read the blackboard.

"Nearly ......" Nancy has the same problem stuttering as Elena when she reads Chinese, Elena is much better now, she can read three Chinese words in a row without stuttering!

"Forget it, Nancy... Elena, the knowledge I am going to talk about next may change the pattern of war in this world, Elena's words don't matter, Miss Nancy, please remember that our kindness is not unconditional. Lu Cheng said to Nancy in a very serious tone.

Nancy, who was named, clutched the charcoal in her hand, knowing what Lu Cheng was reminding her of.

As Lu Cheng said at the beginning, knowledge is not free, although this time Lu Cheng is 'free' to teach her this knowledge of what could change the pattern of the world.

But Nancy doesn't think there will be any follow-up conditions for this knowledge.

This is a friendly signal from Lucheng, and this signal is not given to Nancy, but to the kingdom of Xiuen Zhelai behind Nancy.

More importantly, Lu Cheng is willing to share this knowledge with her, which also shows that this knowledge is something that is not very strange in their world.

"I understand what I'm doing." Nancy also said in a serious tone.

"Hopefully, this knowledge is about weapons, and you want to break away from the most basic weapon technology of the era when swords were used."

Lu Cheng wrote on the blackboard in their words the simplest recipe, which was the essential recipe for crossing, black powder, one of China's four great inventions.

As a city that has started from the information age, the recipe of black powder is useless, but it is a good choice to take out the chips to make a transaction.

"Stinky stones, white flame stones, and... Charcoal? ”

Nancy reads out the three words that Lu Cheng had written on the blackboard in turn.

These words were written by Lu Cheng according to the memories in his mind, with the name of this world... Converted into Chinese, the names are sulfur, saltpeter, and charcoal.

"I've seen a similar alchemical recipe in the Gmansis Mystic Society, where they turn into a flame that burns colored light when they add the wings of a colored butterfly and the tail of a fiery lizard." Nancy said.

"Then you can remove the wings of the butterfly and the tail of the fiery lizard, and mix these three raw materials together in a ratio of two to fifteen to three, and you can make a weapon called gunpowder."

Lu Cheng felt that as long as Nancy mastered this passage, she could almost go back to China and tell her king, 'Wait for us to hold back a wave of technology and then go and kill them.' ’

Gunpowder was indeed another important invention that changed the battlefield, but for Nancy to really play the role of gunpowder, she still had to overcome the problem of a large number of weapons and a long period of workmanship.

"Knowing that this alchemical recipe can produce... Do you have weapons like that? Nancy asked the question, but as soon as she said it, she realized she had said the wrong thing.

The reason why she came to this camp was because during the battle of Scarley that day, the Blood Crystal Beast that could have completely devoured the entire Scarley was shocked by the thousands of fires that fell from the sky.

"Pretty smart, but still too young after all?" Lu Cheng muttered to himself, his voice was not small, and Nancy could hear it clearly.

"I've been old enough to get married for almost five years, so I'm not young anymore."

Nancy was often doubted by others because of her age in the Secret Law Society, and she used this way to tell Lu Cheng that she had been an adult for a long time.

However... Five years after the age of marriage, this kind of thing is not an experience worth showing off on earth, but in this world, if I remember correctly, you can get married at the age of fourteen?

"I'm not talking about you, I'm talking about your world." Lucheng actually refers to Nancy, but it's just Nancy's naïve idea.

Rabbits invented gunpowder more than 1,000 years ago, but it was not until a long time after that that the prototype of the gun appeared.

The biggest reason is that the manufacturing process can't keep up... With the manufacturing process of this world, even if they have things like magic and golems that can be used as cheats, if they want to develop to the level of modern weapon production, I don't know how many pre-technology needs to be lit.

This is also the reason why Lu Cheng can safely use black powder as a bargaining chip, or knock on the door hammer and throw it to Nancy.

Nancy is a smart girl, smart means that Nancy knows how to communicate with Lucheng in order to win greater benefits, and her advanced vision is also the reason why Lucheng values it.

"Gunpowder is only the first step of our weapon, it is also a very terrible weapon in itself, as long as you gather a certain number of them, it can produce a terrifying explosion, but with your current ability, there is indeed a way to use it effectively." Lu Cheng said.

"Is it free to use?"

Nancy had memorized everything Lu Cheng had written on the blackboard, and she was already thinking about how to use the alchemical formula that 'produces a terrifying explosion'.

"There aren't that many free things in the world, but you'll need to pay chips for the rest of the content, just to help me send a signal to your father." Lucheng is of course referring to the king of Scarre's neighbors.