Potassium nitrate, no wonder it burns so violently when thrown into the fire. This is the main material for making black gunpowder that I have been looking for for a long time.

Originally, Chen Xu tried to make black gunpowder several times before, but unfortunately, based on his previous experience in reading novels, he wanted to go to the toilet and pigpen to get some nitro soil. Unfortunately, he finally confirmed that those novels were all deceptive.

Covering his nose, he swept out several baskets of damp soil that seemed to have yellow and white powder from the smelly pigpen, and then soaked it through with water to obtain several large basins of turbid mud. After clarifying it, the water was placed on the earth stove and slowly boiled it. The whole yard was filled with a stinky smell and a smell of urine. Even Niu Dashi, more than 100 meters away, could smell it at home. Xing'er and Chen Jiangshi didn't know why Chen Xu had to make the smelly and dirty shit in the pigpen, so Xing'er was unwilling to do so. She was beaten up by Chen Jiangshi and then she squinted her little mouth, cried, covered her mouth, and continued to make a fire.

Niu Dashi was so smelly at home that he couldn't stand it anymore. He even came over to see him several times. Under the accusation of Xing'er adding fuel to the fire, Niu Dashi, who was defeated by Chen Xu's super creativity and feat of boiling shit and urine, promoted the village that Chen Xu had a brain disease again and wanted to cook shit and urine at home. Then because of this, Niu Dashi was almost beaten by Chen Xu and forced to help him with shit and urine for a day.

After the feces and urine, Ao got a layer of white crystal powder. Chen Xu tried to mix this white powder with the ground sulfur and charcoal powder and put it in the clay pot and stir it evenly and bake it at low temperature. Finally, he got some black mixture, but it did not burn and threw it into the stove and only a stimulating smell of sulfur was ignited. Although the flame was a little intense, it was far from reaching the power of the so-called gunpowder.

After several consecutive tests failed, Chen Xu completely gave up. Before he found potassium nitrate, he suspected that he could not create the legendary black gunpowder, so he calmed down and began to study something else.

But the so-called "unintentional planting willows" became a shade. When he had recently turned all his attention to iron smelting and ceramics, potassium nitrate was found by two little girls.

Am I too stupid? I know that the temperature of the cave is very low, and I know that it is a kind of salt, so I didn’t think about it in advance?

Chen Xu put the bamboo tube into his hand and walked out of the laboratory, excitedly returning to the living room.

"Brother Xu, we are not lying. We have to have a meal tomorrow, meat, braised beef noodles!" Seeing Chen Xu come in, Yu Ji, who was playing on the kang with Xing'er, hurriedly hid behind Chen Jiangshi and whispered.

Chen Xu's face was almost blooming with smiles. He strode to the edge of the kang and grabbed Yu Ji, kissed her fiercely and said, "Don't worry, my brother will not only give you meat, meals, braised beef noodles tomorrow, but also give you lollipops!"

"Wow, so embarrassed. My brother actually kissed Yu Ji's sister. From now on, she can only marry you as a woman!" Xing'er shaved her cheek and shouted as a shame.

Chen Xu shook his hand, smiled dryly and put down Yu Ji and said, "No, I want to marry your sister Shui in the future!"

"I'm afraid that when Yu Ji grows up, she can marry her benefactor!" Yu Wuya, who was studying chess alone, suddenly spoke.

Chen Xu's face twitched hard for a few times and said viciously: "You want to take advantage of me!"

Uh! Yu Wuya quickly lowered his head and thought and stopped talking.

Water gently lowered her head and knitting yarn, and couldn't help but cover her mouth and laugh. Her beautiful figure swayed gently on the wall with the flames of the pine lamp.

The next morning, just as it was dawn, Chen Xu couldn't wait to get up and go into the laboratory and start tinkering inside.

Because of the discovery of potassium nitrate, he basically didn't sleep much all night.

Judging from the two iron pots brought back yesterday, the iron smuggling furnace of the town's blacksmith shop has basically achieved its expected goals. As long as sufficient coal, iron ore or pig iron is provided, it will be a matter of time to make steel suitable for forging, and this process does not take long to achieve.

As long as the gunpowder is also studied, it is basically not too far away from the earth gun and earth cannon. As for the power, you can not consider too much. If it really doesn't work, you can make explosives and grenades. It doesn't matter if it's not powerful. It's mainly because it can sound and scare the local bullies of this era.

The white powder in the bamboo tube is not clean because it has been mixed with the soil for too long, but Chen Xu didn't care too much. He cares whether potassium nitrate and sulfur carbon powder can burn violently and produce an explosion effect.

Pour out the potassium nitrate and soil in the bamboo tube and grind it gently with a wooden pestle. Because there is sand, I dare not move too hard, for fear of friction and explosion of Mars. Because potassium nitrate is very unstable, it will be ignited and exploded when it encounters a little high temperature and open flames. The explosion of gunpowder relies on the principle of the strong unstable state of potassium nitrate. The addition of sulfur and charcoal is mainly used as reducing agents and stabilizers, otherwise it may explode during transportation.

After preparing all the three kinds of powders, Chen Xu carefully took a little with a spoon and mixed them together. For safety reasons, the amount of potassium nitrate is not used too much, and it does not need to achieve the effect of explosion. As long as it can achieve the effect of rapid and violent combustion, it is enough. After finishing, it is placed in a small clay pot and placed it on the earth stove on the kang and baked it slightly, and then walked into the yard with the small clay pot.

"What are you doing?"

Looking at Chen Xuru's expression and movements as serious as a worshiper for an ancestor, Wang Wu and Wang Qi, who were wearing short cuffs and jingling with a big sword, stopped curiously, wiped the sweat from their foreheads, and walked over with their eyes wide open, staring at a small handful of black things in the cuff, with curiosity on their faces.

"Don't get too close, be careful of explosion?" Chen Xu said quickly.

"What is the explosion?" Wang Wu asked in confusion.

"It's just a bang that a fire and thick smoke are coming out. If this gunpowder has more than ten pounds, the effect will be like the Nine Heavens Divine Thunder, and you four will be blown into blood and blood in an instant!" Chen Xu explained.

Wang Wu and Seventh four stared at each other with big eyes, their faces full of disbelief. Wang San shook his head and said, "Don't joke about Lidian. Not to mention more than ten pounds of black mud powder, more than ten basins would not make us fry bloody and bloody, and even a little finger could not..."

"Hehe, I'll show you later!"

Chen Xu turned to the kitchen and lit a wooden stick as thick as a finger inside. After burning for a while, the front part turned into a fiery red. So he quickly walked to the side of the clay pot with the wooden stick. Just like when he was a child, he squatted and squatted more than a meter away and carefully poked the burning wooden stick into the clay pot and poked it gently in the black gunpowder, but there was no reaction.

"Haha, Lidian is fooling me again, I'll say it's impossible!" Wang San laughed proudly.

What's going on?

Chen Xu felt a little numb. Could it be that the white powder was not potassium nitrate? So he stood up with a confused look on his face, but because he had experienced firecrackers being blown up when he was a child, he still didn't dare to get too close.

"Why should Lidian be so timid? Let me help!" Wang Wu handed the great sword to Wang Qi next to him, reached out to grab the fire stick in Chen Xu's hand and squatted next to the clay pot. He rudely used the burning wooden stick to stir the gunpowder for a few times.

"Boom~"

A violent fire rose into the air with a thick blue smoke, instantly submerging Wang Wu.

"Ah~" Wang Wu let out a ghost howl and covered his face and lay on the ground with a thud. The sudden change also caused Wang Sanwang Si and Wang Qi who were about to tease Chen Xu to scatter in panic. The big sword in Wang Qi's hand was frightened and threw it to the ground. He hid more than ten meters away and shivered.

"What happened?" Yu Wuya jumped out of the room with disheveled hair, and with a clang, he pulled out the meteorite sword and looked around blankly.

The noise caused by the gunpowder explosion was not very big in Chen Xu's opinion. Apart from the fire and smoke, the sound was not as loud as a small firecracker. However, for these primitive people who had never seen the world, it was as terrifying as a divine thunder.

"Chen Lang, what happened?" Shui Qingrou was dressing up in the room, holding a comb in her hand and ran out in panic. She was relieved when she saw that Chen Xu was fine.

Following out were Chen Jiangshi and Xing'er, and even Yu Ji ran out barefoot.

"Wowhahahaha..." Chen Xu couldn't help laughing happily.

Damn it, I finally got a gourd, and the gunpowder was finally developed. Although it was not easy to ignite, it was undoubtedly the real gunpowder.

Chen Xu's face was almost blooming when he smiled. He strode to the edge of the clay pot and gently patted Wang Wu who was lying on the ground like an ostrich.

"Ah, God, please spare me~" Wang Wu shouted tremblingly.

"Get up quickly, the gods are gone!" Chen Xu said with a smile.

"Really?" Wang Wu raised his head carefully, and then everyone saw a big, lacquered and black face, with scarred hair, and small holes burning gunpowder everywhere on his clothes. Except for the white teeth, it was like a digging out of an earth kiln.

He rushed Wang Wu to wash his face, hands and change his clothes. Chen Xu squatted down and looked at the clay pot carefully. It was still intact. The entire pot was smoked and black, with obvious signs of burning at the bottom of the pot, and there were still a lot of black powder and some sand left.

"My benefactor, what were you doing just now?" Yu Wuya put away his iron sword in confusion, walked over and squatted beside the clay pot and asked curiously.

"I just developed a gunpowder to make the Nine Heavens Divine Thunder. Wang Wu bravely helped to test it. Although the effect was not very good, I was still very satisfied!" Chen Xu said excitedly.

"Nine Heavens Divine Thunder? Could it be a fairy art?" Yu Wuya was shocked.

"Hehe, that's right, this thing is so fierce and domineering. If it is really done, it will take dozens of feet to stay within a radius. Hurry up and eat, and follow me to Qinghe Town after eating..." Chen Xu stood up with a clay pot with satisfaction.
Chapter completed!