He knew Li Chiying so well. When he was in college, he had a junior college student who grew up wearing pairs of pants and got close to the chemistry department. From then on, he became an experimental maniac. He was addicted to experiments all day long and could not extricate himself.

Pei Min asked him to go out to pick up girls and experience college life, and he always got a sentence like "I'm doing an experiment, I don't have time."

Li Chiying's expression at this moment was no different from his childhood friend. She was as obsessed with various chemical reactions.

Li Chiying also knew that she was too excited and stopped talking. She looked at Pei Min with a little nervousness and asked, "Don't the Duke of the State thinks that Ji Ying is obsessed with it, right?"

Pei Min shook her head and said, "No, why can you? I'm just a little surprised, too surprised, and a little admiration."

He knew very well that ancient times were different from modern times.

Most modern chemical reactions have long been understood, at least most of the knowledge learned in schools is like this. According to book experiments, there is almost no possibility of failure. It is different now. There was no accumulation in this aspect in ancient times, everything was zero, and it needed to be pondered little by little.

This follower will never be able to experience the joy of success of the pioneer and the hardships of failures again and again.

Li Chiying can be said to have started from scratch, and it is not easy to maintain this enthusiasm.

After hearing this, Li Chiying said with a spirit: "I know that Duke Guo can understand Jiying, but Jiying is stupid in nature. After a few years, he has not gained anything. Instead, Duke Guo, who is busy with business, still successfully studied black gunpowder in his spare time..." She was a little depressed when she said here.

Pei Min hurriedly advised: "Princess is a wise man, and I am not aware of the black gunpowder. I learned the formula from ancient books, and then developed it through many famous alchemy masters such as Qingxuzi and Gu Hongzi. Pei did not dare to make a single contribution..."

Li Chiying felt a little better.

Before she could ask about the formula of the black gunpowder, Pei Min asked with a smile: "I don't know what the princess's research results have been in the past few years? The birth of the black gunpowder involves a brand new science. It is extremely difficult to understand and master this kind of science by just one person. But I don't know how much the princess has learned by herself."

Li Chiying asked her confidant maid Linglong to go to the car and took the things she was studying. She sighed and said, "There is no effective result. Since the emperor learned that the Duke of the State invented the black gunpowder, she has linked it with gunpowder in her heart. Gunpowder is saltpeter, and saltpeter must be the main material. Starting from this aspect, Chiying found that the fruit had a violent reaction, but it has not been effective."

Linglong took a small wooden box at this time and handed it to Li Chiying.

Li Chiying handed it to Pei Min and said, "This is the limit of Jiying's current burning! The reaction is indeed huge, but unfortunately it is flashy and beautiful. When I lit it at night, it is like countless fireflies flying around."

Pei Min took the wooden box curiously and opened it. His eyes were full of shock: the box contained tiny black particles, shiny, and grains were like sesame seeds and rice grains.

“Grained!”

These three words appeared in Pei Min's mind, and he always knew that black gunpowder still had a lot of room for improvement.

The fatal disadvantage is that the combustion is too slow, which causes the gas to expand too slowly, resulting in a much different power and applicability.

This can be made up for the shortcomings by granulation. The black gunpowder mixed with saltpeter, sulfur and charcoal is powdery, which is also due to the powdery ones that cause the burning and expansion too slowly. However, as long as the black gunpowder is made into granular form, this defect can be compensated for to the maximum extent.

It's like the experiment in the Ministry of War. Because the space is a small house, it takes a certain amount of time to burn before it can explode. If the black gunpowder at that time was granular, Pei Min might not be able to run away to Li Longji. It would not take more than ten seconds to explode in five seconds, and it would be even more powerful.

But although Pei Min knew the convenience of granulation, he didn't know how to pelletize the black gunpowder.

This is also the goal of the next research and development of black gunpowder.

However, this research and development will take a certain amount of time. It is imperative to open Longshan and repair Wushaoling. The powdery black gunpowder is powerful enough to deal with it. There is no need for the development to be granulated for the time being.

Pei Min never expected that Li Chiying would develop the effect of granulation in advance, which was a major improvement in black gunpowder. He looked at Li Chiying in surprise and said, "How did the princess do it? I mean granulation. Saltpet or something should be in the shape of powder, right?"

Li Chiying didn't understand why, so he said truthfully: "Saltpe, soap beans, arsenic, and cinnabar are mixed together, which is not easy to burn. Many times, the soap beans, arsenic, and cinnabar are still there. I thought of a way, just like making ink, pounding, pounding, pressing, gathering all the materials together, then drying, and cutting them into these particles. It is indeed useful, not saltpeter or saltpeter, and soap beans are mixed together, burning and extinguishing them together!"

Pei Min didn't know how to describe her mood at this moment, and after a while he praised: "Princess, you are such a genius!"

Li Chiying praised him for no reason. Although he didn't know the reason, he was very happy.

Pei Min explained: "The princess's granularization innovation is a great progress. You just don't know the formula of black gunpowder. If you know, the black gunpowder produced by your granularization method is much more powerful than ours." As he said that, he bowed deeply to Li Chiying and said: "I don't know if the princess can explain the method of granularization in detail so that it can be used on black gunpowder, and pelletize the black gunpowder together to activate its power."

Li Chiying seemed to hit a pie in the sky. Her strange thoughts made Pei Min pay so much attention to it. Her little vanity was greatly satisfied. She even said with a little panic: "What's the problem? Chiying told the Duke of China. It would be even better if the Duke of China could lead Chiying to visit the black gunpowder production workshop."

"What's the difficulty?" Pei Min made a gesture of invitation and said, "The princess wants to go and see it, so I'll take you there. It just so happens that the princess also teaches us how to granulate it to enhance the power and effect of black gunpowder."

Li Chiying's big eyes shone with excitement. At the invitation of Pei Min, he went to the Shence Army camp together.

After entering the military camp and walking to the Black Powder Workshop, Pei Min and Li Chiying walked side by side, telling the entire material of the Black Powder and the principle of the explosion.

"So that's it!" Li Chiying suddenly realized: "It turned out that the explosion formed by the support of the qi was the wrong way. Ji Ying understood that the powdery black gunpowder was like sand, too dense and not easy to burn deep. The granular black gunpowder, each of which is a whole, is connected to each other, can ignite one after another. In the shortest time, more air bursts out, making the black gunpowder explode faster and more powerful!"

"Princess, you are such a genius!"
Chapter completed!