Li Ye took Yue'er and Wei Yubai to play Goji while waiting. Goji was taught by him, and it was easier to determine the outcome than Go and was simple and easy to understand. Yue'er and Wei Yubai liked it very much.

After waiting for nearly an hour, the filtrate became clear, and then he carefully poured the clean filtrate into another bucket.

In fact, the invention of gunpowder is almost historically inevitable, because even now no one occasionally discovers that it will be a matter of time with the advancement of chemistry. It is like a boy will naturally know to please the opposite sex when he grows up.

Li Ye hopes that this era and the world can produce two kinds of people.

One is the "Savior", such as Confucius, Jesus Christ, etc., which change human values ​​and destiny. This is necessary for people to move forward. If the people's wisdom is not opened and the concepts in the general environment cannot be changed, many things will be futile.

Another type of person is a basic worldview architect like Newton, Einstein, and Hawking. The appearance of such a person will completely change the world, rather than making small fuss like him. Li Ye also understands that it is difficult for him to do this. Even if he forces it, the concept of the overall environment will not allow it, but things will go against his wishes. What he can do now is to create a good environment, and everything must be done step by step.

Li Ye directly set up a pot in the yard to set the heat, poured all the filtrate in, and then slowly heated it.

After a while, the water boiled and the water vapor was steaming. Li Ye was still adding heat and stirring with sticks while cooking.

"Sister Wei, what exactly is the prince going to do?" Yue'er sat on the side and asked Wei Yubai with her little head tilted.

Wei Yubai spread his hands and smiled, knocked her little head: "How do I know? You want to ask your prince."

"The prince won't tell me." The little girl pouted and said aggrievedly, and Wei Yubai had to rub her little head.

On the other hand, Li Ye was still staring at a large pot of water attentively. At this time, he could not make any mistakes.

After heating for more than an hour, Li Ye slowed down the fire because the water began to evaporate gradually. Finally, the open fire was completely removed and only roasted with carbon fire. When the water was about to dry, it was buried with wood ash, and completely extinguished the charcoal fire and evaporated the final moisture by relying on the residual heat of the pot itself.

At this time, a thin layer of translucent white crystals had been attached to the bottom of the pot.

Li Ye wiped his forehead and sweat densely covered with steam, and finally breathed a sigh of relief.

As far as the result is concerned, the nitrate content in the soil looks pretty good.

The most important type of chemical fertilizer in later generations was potassium fertilizer. There are many main components of potassium fertilizer, potassium sulfate, potassium stone salt, potassium magnesium salt, light halite, potassium nitrate, and potassium nitrate is the main component of saltpeter.

This makes it easy to understand why the soil contains potassium nitrate, which can be used as a fertilizer.

The two girls looked at a layer of white crystals at the bottom of the pot incredibly: "Criminal, what is this?"

After Li Ye waited for the bottom of the pot to cool down, he collected the translucent crystals in a ceramic jar and said, "This is potassium nitrate."

"What? What a armor..." Wei Yubai couldn't understand, so Li Ye had to collect it and wrote the three words "potassium nitrate" on the ground with gravel. Of course, they would definitely not understand.

Finally, I collected a small can of saltpeter. Potassium nitrate is a five-toxic substance, so I don’t need to be careful. I took it in my hand and weighed it for a while. After removing the can, I estimated it to be more than 500 grams.

It can be seen that the soil content in the near Prince's Mansion is still good.

Generally speaking, most soils are rich in nitrogen, and the content of nitrogen in places where rain is less eroded.

"What is potassium nitrate used for this?" Wei Yubai asked.

"It has a great effect. It can be used to refrigerate, kill enemies, and fertilize. This is simply a treasure." Li Ye said excitedly holding the jar in his arms.

Kebiao underestimates this little thing. These translucent white crystals are even more precious in later generations. Making fertilizers, gunpowder, explosives, color protectors, antimicrobials, preservatives, fireworks, matches, etc. are all indispensable things.

"Baby?" Yue'er wondered: "Isn't it just made from ordinary soil? It doesn't look like a baby at all. You don't need to grow it, it's easier than sweet potatoes."

Li Ye smiled and rubbed her little head: "You will understand from now on."

"The prince said so again..." the little girl said helplessly.

Saltpeter, or potassium nitrate, is a very important resource for Li Ye.

Not only weapons, but many aspects can be used. Most of the later industries will be made with potassium chloride and sodium nitrate, but the current conditions are not met, so he is ready to use the most old-fashioned method to prepare a batch of inventory first.

The soil method is very simple. As long as it is a cave, an old house, and lush forest, the soil that rarely passes through rainwater will have a high content of nitrate, or the soil that breeds these microorganisms around toilets, pigpens, and stables.

Of course, Li Ye was not going to dig his own stable. The deep trees in the barren mountains in the backyard of the royal mansion were covered by rocks. It must have a high content of salt. All he needed now was manpower.

Fortunately, there are hundreds of people in the royal palace, and for now, the manpower and material resources are enough.

Of course, he would not be stupid enough to bring back the soil. He was going to build a temporary shed on the barren mountain as a workshop, and then send someone to live there to make it convenient.

After a busy day, Li Ye returned home with a can of saltpeter with satisfaction and came home. He also brought an imperial edict that almost choked him to death. After the New Year, he asked him to serve as a servant in Kaiyuan Prefecture waiting for the Kaiyuan Prefecture to be sent...

Li Ye almost vomited an old blood: "Don't you want to mess with me? He Zhao wants to kill me now..."

"What are you talking nonsense?" Degong glared and said, "How dare he deal with you? Besides, having an official body is good for you. Sooner or later you will understand. Even if you don't want to do anything, just go to the Kaiyuan Prefecture yamen for a few days. In the future, you will also be an official body and a person from the court."

As he spoke, Degong said earnestly: "You must understand that rejecting dissidents is a common human nature. If you are not an official, many things will be difficult to handle in the future. Do not act voluntarily to ruin the overall situation."

Li Ye had no choice but to nod. He understood what Degong meant. From a psychological point of view, this was also a manifestation of social identity. If he had no official status, it would be difficult for the court to identify with him in the future, and many things would be difficult to handle at that time. Degong was doing his best.

Li Ye nodded: "Then go, it's just He Zhao, I can handle it." Besides, He Zhao lost the bet with him that day and still owed him a condition for something. At this time, I'm afraid I won't avoid him.

.........

The three departments will be decisive and decisive in the trial. This is a case that is no doubt, because before Zhu Yue entered the Censorate, the people who were on duty in the imperial city that day could no longer bear the call.
Chapter completed!