Sure enough, the most charming thing in the world is the breath of money, Liu Ximing touched the silver in his arms like a miser, and his face bloomed.

With money in his pocket again, he relaxed all of a sudden, thinking that he had to buy something for his family, and pulled Li Biao and the three of them into the city to shop.

When passing by the grocery store, Liu Ximing suddenly remembered that he wanted to get some gunpowder for the Chinese New Year last time, and patted his head vigorously, damn it, if there was this thing before, how could it be so embarrassing the day before yesterday!

The four of them entered the grocery store, but Xiao Er in the store looked at him in surprise: "Guest officer, this gunpowder is a contraband, and the small shop is a small business, but you don't dare to do these businesses!" ”

Seeing that the finished gunpowder could not be bought, Liu Ximing was not surprised, firearms had already been used on a large scale in the Meng Dynasty, but the quality was very poor, and the demand for this gunpowder was still very large.

There was no way but to make gunpowder by himself, so he turned around and asked about the price of saltpeter, sulfur and charcoal, and only regretted it when he said it. I'm so stupid, really!

However, the shopkeeper didn't react and said: "These small shops have some inventory, charcoal is a pound of silver, sulfur and flame nitrate are five cents of silver, how much do the guest officers want?" ”

Liu Ximing saw that Xiao Er was not unusual, and then he remembered that the speed of information transmission in ancient times was very slow, and the information that many modern people knew was only grasped by a small number of people in ancient times, okay, okay!

I rub it, but this charcoal is more expensive than sulfur, what a profiteer! However, charcoal seems to need to be fired manually, and sulfur saltpeter has a production area in Sichuan, and it can be used directly by mining, which is indeed not the same.

Well, what is the ratio of gunpowder, it seems to be one nitrate, two sulfur and three carbon? But it's certainly not 1:2:3......

Nima, Liu Ximing really hates that he didn't study chemistry back then! I had to use the little chemical knowledge in my head to desperately recall it.

Thinking that a pound of Meng Chao is sixteen taels, will it be 16:2:3? This ratio sounds scientific, so let's try it out with this. Anyway, there were many people he brought, so Liu Ximing bought 20 catties of saltpeter, 5 catties of sulfur and 5 catties of charcoal.

Yu Yongkai and the others were also strange when they saw him buying these things, but after experiencing the scene in the warehouse, Liu Ximing suddenly became mysterious in their hearts, and a few people didn't ask much, just carry good things.

When they returned to the village, a few people walked on the road from the dock to their home, and after a long distance, a middle-aged man stood in the ground and greeted Liu Ximing: "Xiao Xiucai, you have made a fortune from Fucheng again, are these two also your family?" ”

This person seems to be called Wang Fu?

Seeing him take the initiative to say hello, Liu Ximing didn't want to ignore it, but it was a little strange to hear what he said, Liu Ximing replied: "Uncle Wang, I'm still working here, where did we make some money, it's just to go around the city." ”

Wang Fu smiled, showing the shrewdness of a farmer on his face, and smiled at Liu Ximing: "You are still here to trick me, you bought so many people from your family and came back, the whole village knows about it, if you don't make a fortune in Fucheng, where can you raise it." ”

Liu Ximing's face changed slightly, this is not a good sign, there are still big households in the village watching from the side, if he is targeted, it is estimated that it will be troublesome, he replied with a forced smile: "I said it last time, I dug out the treasure left by my ancestor from the ground, you are busy first, we are in a hurry to go home and leave first." After speaking, he didn't care about Wang Fu, and pulled the three of them to hurry home.

Wang Fu stood in the ground and put the hoe up, put his hand on the hoe, and muttered in a low voice: "Lie to you, if you don't make a living, who would dare to raise so many people." ”

Liu Ximing rushed to the house, and saw several village women standing outside their courtyard and pointing inside, and the four of them ran into the courtyard with their heads down silently.

Liu Chen said a little worriedly: "Xu came back late yesterday, and there were few people in the village who noticed it. When I met and asked me, I said that you were in the city, and you saw them in distress on the street and brought them back with a good heart, but I don't know if people believe it or not. ”

Liu Ximing put down the basket while thinking carefully, he was mentally prepared when he decided to take in Yu Yongkai and others, knowing that sooner or later it would attract the attention of others, this is not a big deal, but the trend of public opinion in the village still needs to be guided and guided, so as not to be crooked by Zhang Dahu and these people, you need to know that he must have some collusion with the government as the lieutenant governor, and he can't bear the means of the government now.

At this time, Mu Jingnan and Li Jingsi and others also came up to help help, Liu Ximing waited for Li Biao to clean up, and pulled a few of them to the back of the house to check around, and found that after this day, half of the weeds on the ground behind the house had been pulled out according to their own explanation, and the progress of the work far exceeded their own estimates.

Li Jingsi laughed and picked his head on the side, but Mu Jingnan smiled and told Liu Ximing who did what work and who did it faster today, and Liu Ximing was a little surprised when he heard it, this Mu Jingnan is really a talent, and he also knows how to record everyone's work performance, and nodded at the moment to keep this in mind.

While he hadn't eaten yet, he said to the older people around him: "The day before yesterday, I was chased by the Black Tiger Gang, Li Biao and I were almost powerless to fight back, now although there are more of us, but we are also half-grown teenagers, if you want to fight with those adult men, I am afraid that you will suffer, just bought some things today, let's try to make some gunpowder first, and when the time comes, it is good to have something to defend yourself, you are older, you are all on the side to give me a hand, and by the way, other people will also be called over to learn how to make gunpowder together." ”

Yu Yongkai was a little surprised: "Second brother, you can actually make gunpowder?" ”

Liu Ximing smiled and nodded, urging a few of them to quickly move saltpeter and other things to the back of the house, and then called the others over and stood in a circle.

Ahem

Teacher Liu took out a small whip, no, it was a small wooden stick, and started his first chemistry class in the Meng Dynasty: "Everyone be quiet, today we will learn to make gunpowder, which is what we often use to make firecrackers." This thing is mainly made of saltpeter, sulfur, charcoal these three according to different amounts of mixture, after making only need to be lit with fire, it can quickly burn, if like a firecracker with paper or other things to seal the gunpowder, after ignition it can also explode, make a sound and injure the people around. ”

Liu Ximing was a little nervous when he gave a lecture for the first time, but after thinking about it carefully, there were no textbooks anyway, and he didn't say anything by himself, so he slowly calmed down again.

"To know what it is, we must know why it is true, about the principle of gunpowder, we all know that we live in the world, we have to breathe all the time, this is the breath between heaven and earth, I call it air, after inhaling, we have to exhale to expel some waste gas from the body. Gunpowder burning is also like our human breathing, when burning, you need to inhale air, after burning to exhaust the exhaust gas, if the gunpowder is sealed in a jar, it will have no place to go after the combustion of the exhaust gas, you can only desperately squeeze out a few gaps in the canister, in order to escape, then there will be an explosion, when the explosion of the canister is broken and flies around, it will injure the people around. ”

Liu Ximing tried his best to explain the production process of gunpowder and the principle of explosion in words they could understand, and when he saw that most of the teenagers were at a loss, he couldn't help but feel a little discouraged in his heart.

Sense is really not good, I'm tired.

Fortunately, seeing the thoughtful expressions on the faces of Yu Yongkai, Mu Jingnan and others, they were finally a little comforted. There was no way, he could only talk about it a few more times. In the end, he simply talked about it while demonstrating it himself, first mixing the three materials together according to the ratio of 16:2:3, crushing them with the wooden stick in his hand, and then stirring them evenly, but in the end, he shook his head a little when he looked at the gunpowder made, this thing was not stirred evenly, so let's try it first.

With a "bang", the gunpowder burned smoothly, and a large amount of white smoke came out.

"Wow"

A group of teenagers were excited to watch from the side, this thing was made in front of them, Liu Jingqing and a few other small ones wanted to reach out and touch it, but they were quickly stopped by Liu Ximing.

The powder was burned out after a short time, but there were still many unburned materials in the burned residue, indicating that the stirring was not uniform.

If you use this thing as explosives, when it explodes, everyone else will run a few feet away, Liu Ximing was speechless for a while.

It's okay, failure is a success, the gunpowder in modern fireworks is also powdered, but modern gunpowder should be stirred by machine, and it is definitely not possible to achieve that uniformity by hand stirring, how can you make the three materials mix more evenly?

Remember hey, the second stage of gunpowder seems to be granular gunpowder? Gunpowder can be mixed more evenly after wetting, while granulated gunpowder cannot be mixed together as tightly as powdered gunpowder, and many small holes will be formed in the middle, and the oxygen in it can further accelerate the combustion of gunpowder, thereby increasing the burning speed and power of gunpowder.

He hurriedly asked Liu Xixian and Liu Xi'an to find some leftover soju from home, and slowly poured the wine into the basin, while slowly stirring it with a wooden stick. After a while, there was only a piece of black gunpowder cake left in the wooden basin, and Liu Ximing took a few small dustpans for sifting rice, and asked Yu Yongkai and them to slowly sift the gunpowder cake into tiny particles.

However, this thing can only be used after it is dried in the shade, and it just so happened that Liu Chen and Aunt Wu had finished the meal, so Liu Ximing beckoned everyone to come and continue after eating.

"Aunt Wu, thank you for coming over to help in the past two days, you have also seen it, now there are more than 20 people in my family, and my mother alone is really a little too busy, why don't you come to my house to help in the future, the salary is the same as Li Biao, how about it?" Taking advantage of the stall to eat, Liu Ximing said to Aunt Wu.

Aunt Wu was overjoyed when she heard this, her son had already made her much easier to follow the Liu family, if she could follow the work, the family would be able to save a lot of extra money that year, and immediately said with a smile: "It's just a gesture, of course it's no problem to come over and help, but if you just cook three meals a day, you don't need to take so much money." ”

Liu Ximing is still pushing back and forth with her, Aunt Wu's family is now tied to her own family, if she is stingy now, how will she buy people's hearts in the future. Seeing that he had made up his mind, Aunt Wu accepted it with a smile.

After the meal, Liu Ximing found a few stoves to warm his hands, and put the granules of gunpowder aside to bake slowly. After a while, seeing that it was almost dry, he picked up a handful and tested it, and watched the gunpowder particles burn out quickly, and his heart was excited.

However, if you want to make gunpowder powerful, you also need to make a container for gunpowder, which is not very powerful at this stage, and there is nowhere to find it at night, so I have to take a wooden box and try it.

"Bang!"

A loud bang sounded in the back room of Liu's house, Laifu Wangcai and the dog in the village barked at once, many villagers came out of the house to check, everyone thought it was thunder, and it was unusual to hit such a big thunder in winter.

Everyone behind Liu's house cheered in a low voice, this bomb was finally made, Liu Ximing was also happy in his heart, although it was just an ordinary hey gunpowder bomb, the impact range was estimated to be less than a zhang, but this was a treasure made by himself.

Wait a few days to find out if there are any things like clay bottles to make bomb shells, and this Chongzhen No. 1 bomb in the seventh year will be officially finalized.

Throw a few out at the critical moment, hehe, not to mention blowing people up, it's good to scare the enemy. Although this guy seems to take up a lot of space, he can put them in the space and throw them on fire when needed, and the effect will be known to whoever uses it!