Zhu Hongsan looked at what he remembered, and only he could understand every stroke. He wrote three words to study after the steel item.

Zhu Hongsan sighed. He was about to run away for fourteen years. If he didn't say anything in the future, he would not make any money when he ran away. He made a lot of money now, but he didn't use it at this family. He was in charge of money. He could only do some small developments in the name of experiments. It was really troublesome to not hurt or itchy.

But there is no way. Zhu Hongsan thought that my mother would give herself some money when she was twelve years old. After all, in the Ming Dynasty, she could bear legal responsibility at the age of twelve (that is, she had to pay various taxes), and she could only become an adult at the age of fifteen.

So it was all Ming Dynasty people who started getting engaged at the age of twelve. This was because of a good family background. After all, Zhu Hongsan, a bachelor in his twenties, also saw it. (Zhu Hongsan saw a post that the average age of Chinese people before the founding of the People's Republic of China was 35 years old. Of course, the reasons such as natural disasters in wars must be ruled out.

However, the average age of the ancients was 35 to 40 years old. When the founding of the People's Republic of China, the average life expectancy of the Chinese was 35 years old. It reached 67 years before 1978, and by 2015, it reached 75 years. Think about it, live forty years more).

Zhu Hongsan thought that there were still five years left, and it was difficult to endure it. But he couldn't do anything without doing anything. He still had to prepare for the preliminary work. Zhu Hongsan looked at what was suitable for his own experiments. Muskets and cannons are not good now, and Huguang is still basically peaceful. If a royal family wants to make this thing, it is not far from Fengyang. Intelligence is not good, there is no suitable candidate, nor military, and there is no candidate.

I originally wanted to use the Dongfeng to change houses to get dozens of orphans and train them in advance. After all, the military generals are too anxious, but I don’t agree to change houses. I still said that age is a flaw, and Zhu Hongsan really wished he could grow to fifteen years old.

Steel is not good either. The investment is too big and the noise is too big. Zhu Hongsan imagined that he had seen a small iron smelting plant in townships with about 200 tons of steel were released at a time, which is not the kind of ironworks. It seems that only gunpowder is left, and it is still feasible to experiment this thing in advance in small-scale experiments.

When he thought about it, he started construction. Zhu Hongsan took three days to collect materials and delivered them to his home one after another. Charcoal is easy to say, sulfur saltpeter is a strictly controlled substance. Zhu Hongsan and Zhao Goudan went to five stores to get the things.

Zhu Hongsan naturally skipped the evolutionary process of hundreds of years and directly used the best ratio of black* gunpowder, 75% potassium nitrate, 12% charcoal, and 13% sulfur. Zhu Hongsan and Zhao Goudan first picked out the impurities in all the materials. The purity of saltpeter is the most, and there are many stones inside.

The process is very simple, similar to the purification of sugar. First dissolve the saltpeter into water, stir and heat and filter out impurities. The finer the filter, the better. Then heat and boil, and reduce the amount of fire when the liquid level is only two-thirds of the previous one. This is the high-purity potassium nitrate, and slowly precipitates into crystals.

Zhao Goudan looked magically on the side. Crystals appeared on the colorless water. Zhu Hongsan looked at Zhao Goudan and said, "How is it, is it fun?" Zhao Goudan nodded and said, "Is this the same as snow sugar? Can it be eaten?"

"If you can't eat this, you will die if you eat it." Zhu Hongsan scared.

"Sanwazi, you are so awesome. Can you turn stones into gold? I can listen to many immortals who can do it."

"Not now, I can do it if my magic power is strong in the future." Zhu Hongsan was too lazy to explain to him. What should I say? Tell him about high school chemistry?

Zhu Hongsan saw that the water in the pot was almost gone and signaled Zhao Goudan to turn off the fire. Seeing the potassium nitrate in his hand, he couldn't be more interested. He purified nearly ten kilograms of potassium nitrate in twenty kilograms of saltpeter. This is not 100% potassium nitrate, and there is some sodium chloride inside. Zhu Hongsan estimated that the purity is about 90%, and ten kilograms are just ten kilograms. Let's do it first to see how powerful it is.

Zhu Hongsan weighed charcoal and sulfur according to the best ratio. The best charcoal to choose from charcoal is actually the best way to use willow charcoal, but he didn't have it in the city for a long time, so he had to use this ordinary charcoal instead. Sulfur is natural sulfur and has good purity.

First pick out the charcoal that is not charcoalized in the charcoal and try to pick charcoal blocks that are not as thick as the nodes. Then grind these three pieces separately in a small mill, the better the more you break. Instruct Zhao Goudan to grind the charcoal and sulfur, and Zhu Hongsan grinds potassium nitrate by himself. This thing is explosives and will explode if it is not done well.

Crush the crystals bit by bit, then sieve them in a fine basket, and then grind them. After finishing, I saw that Zhao Goudan was almost done. Finally, weigh the weight and try to make the proportion correct. Then stir the three powders, add water while mixing, and make it like a dough cake. Use a ruler to cut into strips of the same size, about length, width and height are about one centimeter, and then place it aside to dry the shade.

After doing this, Zhu Hongsan wiped his sweat, and now he is half successful. The next step is to go to the blacksmith shop to make a few iron cans.

Two days later, Zhu Hongsan saw that the gunpowder blocks were basically dried. In fact, this was basically the same. But Zhu Hongsan was determined to do the best and also polished the gunpowder particles.

The method is very simple. Use a large dustpan to put the gunpowder particles inside, and put a little thick river sand of the same size into it with a sieve. Zhu Hongsan and Zhao Goudan began to shake clockwise. The polishing was soon done. The next step should be to pick out the gunpowder particles of the same size. Other unqualified ones need to be reworked.

But Zhu Hongsan couldn't wait, and didn't choose the size, so he put it all in a custom-made iron jar. The size of the iron jar was similar to that of the Coke bottles in later generations. It was too big and could not be thrown far by one person. Yes, Zhu Hongsan was planning to make a hand-held grenade.

A total of four jars were made, two filled with polished gunpowder balls, one filled with unpolished gunpowder blocks, and the other filled with traditional gunpowder. They were bought at firecracker shops on the street.

After the installation, the jar was sealed with mud and left a lead. The task was done. It was time to pass noon and the weather was pretty good. Zhu Hongsan felt that it was better to choose a day than a day, so he went to experiment with his new hand-held grenade today.

Just as I was about to go out, I saw Qian Fatty Qian Lide coming, and looked happy. When I saw Zhu Hongsan, I said, "Brother, my mother really did what you said. The herb is not useful yet. My aunt was sold by my father and the child was also aborted."

Zhu Hongsan nodded and said, "Your uncle and the others are here?"

"Here, all five uncles are here, and all my grandfather is here. I scolded my father for being ungrateful and forgot how he got his family property. My uncle also asked my father what reason he had to divorce his wife, was he unfilial or had no queen? My father was speechless.

Finally, my mother took out the letter written by the servant, and my father aborted the aunt in front of my grandfather and uncle, and then sold it. I was a little scared." Qian Lide foamed at the mouth.

Zhu Hongsan said: "You must pay attention. Your father has no way out now. You will suffer in the future. Your father will beg you strictly."

Qian Lide opened his mouth wide and asked for a long time: "What should I do?"

Zhu Hongsan said, "What should I do? Be a good person. You are 12 years old this year. Don't just want to play, you should also think about the future."

Qian Lide nodded and saw Zhao Goudan and each of me took two iron cans and asked, "Where are you going?"

Zhu Hongsan said, "We go out to the city, will you go?"

Qian Lide nodded quickly: "Okay, I'm here to play with you."

After the three of them discussed it, they went out of the city together. Unexpectedly, they met another person at the gate of the city, Ma Xiaofang, who Zhu Hongsan didn't want to meet the least. Ma Xiaofang developed very quickly in the past two years, and now she is almost 1.6 meters tall. An adult man is tall, with a beautiful face, long legs and thin waist, and his chest is like a small steamed bun. Zhu Hongsan thought to himself when he saw it: "You can eat it in a few years."

Ma Xiaofang saw the three of them from afar and hurriedly walked over and asked, "What are you three doing? Where are you going to play?"

In recent years, Ma Xiaofang has been out less and less. She said that her father is very good at managing her. Every time she takes advantage of her father going out to make friends, it is probably the same this time. Qian Lide laughed at the side and said, "So it's my sister-in-law, we're going out to play in the city."

Ma Xiaofang gave Qian Lide the same thing, but Ma Xiaofang liked to hear these words and asked with a blushing face: "Can I go, too?"

Zhu Hongsan sighed and said, "Do I dare to say no?"

The four of them came to the back of a small hill five miles outside the southern city. There was a small forest. Zhu Hongsan saw that it was almost six miles away from the city. It should be fine. He asked Zhao Goudan to leave a polished gunpowder jar, and put the other three in the woods, lined up in order of fifty meters apart.

Zhu Hongsan, Zhao Goudan, Qian Lide, no one took an incense to order the medicine twister. He told them how far they would run after they were ordered. It would be better to run two hundred meters, and then let Ma Xiaofang wait behind a stone 300 meters away. Zhu Hongsan thought about it and had nothing to forget, and the medicine tip was also kept very long, enough to run two hundred meters.

He said to the other two: "Okay, listen to my slogan to ignite the fire together. How far you can go after ignition? Remember, this thing will be a life-threatening thing." Zhao Goudan and Qian Lide nodded.

Zhu Hongsan entered the woods and first looked at the route they wanted to run, then saw that they were in place, shouting, "Light." After igniting the fire, they turned around and ran away. Zhu Hongsan ordered a pot of traditional gunpowder, and the other two were powerful. After all, his life was important. If Ma Xiaofang had not been Xiaomi, Zhu Hongsan wanted her to go. Zhu Hongsan ran behind Ma Xiaofang's stone, looked up and saw Zhao Goudan, Qian Lide and the other two ran back. The three hid behind the stone, and waited for three minutes. Qian Lide said, "Is it a tide of gunpowder?"

Zhu Hongsan said, "No, I was yesterday..." As soon as he said this, he heard three loud noises in the woods. After a long time, Zhu Hongsan asked, "Is it three loud noises?"

Ma Xiaofang said, "It's three tones, I can hear it very clearly."
Chapter completed!