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In the middle of the Tang Dynasty, alchemists among the spiritual monks discovered that mixing sulfur, nitrate, and charcoal together and heating them would cause deflagration, causing fires, burning people's skin, and even burning houses. Therefore, people called the medicine made with sulfur, nitrate and charcoal as the main ingredients as gunpowder.

At this time, the Song State had fully developed and utilized gunpowder technology, and had already produced iron cannons, which could fire spherical explosive shells cast of pig iron. During the reign of Song Taizu, a man named Feng Jisheng presented the method of making rockets to the imperial court, and the arrow of the rocket was tied with a sackcloth bag filled with gunpowder, plus a fuse, lit with a fuse, shot into the enemy, and soon exploded, with good power, it was an early grenadier.

During the reign of Song Zhenzong, there was a man named Tang Fu, who presented three gunpowder weapons to the imperial court: improved rockets, fireballs and tribulus terrestris, the main body of which was a gunpowder bag, but in addition to gunpowder, the package of tribulus terrestris also contained with "iron tribulus terrestris", which had spikes on it, water chestnut shaped, lit with fire on the medicine line, thrown out not only would burn, but the iron tribulus terrestris inside would also kill and maim the enemy with the help of explosive power. This is an early grenade.

At this time, the application of gunpowder has been quite common, for example, as far as the imperial court is concerned, Kaifeng has a large arsenal, called "Guangbei Siege City", which is divided into many departments, among which there is a "gunpowder kiln", which is a workshop for making gunpowder. And each state capital basically has its own gunpowder production kiln.

This is a true record of history, and it is also a reality of reality.

Ruan Zun wanted to make a fire thistle terrestris that could have a large killing area and lethality against spirits. The ordinary fire thistle, the power of the explosion, and the splashing of the thistle, are extremely powerful for the general people, but for the spirit, the effect is very average. The surface of the body of the spirit has a layer of protective spiritual power, and it is difficult for ordinary iron weapons to break through the defense. However, if the thistle terrestris is replaced with fine iron or even stronger metal, it is possible to break the defense, but because these metals are very heavy and the material is special, it is extremely difficult for the explosive power of ordinary gunpowder to achieve the effect of high-speed splashing.

This can't be helped, with the current level of science and technology, it is not possible to refine more sophisticated gunpowder with stronger explosive power.

Ruan Zun was sure, because he remembered exactly the optimal ratio of nitrate, sulfur, and charcoal in modern gunpowder in his previous life and the refining process. This is one of the most important reasons why tomb robbers such as Boss Zou in his previous life were willing to let him join this gang. It is often difficult to pry open the thick walls of the tomb by manpower, and at this time, the tomb robbers will use some soil explosives to fry the fish.

Since explosives are controlled products, they can only be made by home. It was very difficult for most of the guys who had not graduated from junior high school to make some homemade dynamite, and in this regard, Nguyen Zun used his knowledge to help them a lot. So, now he remembers those proportions very clearly. Moreover, because his mind was now more agile, his perception of the proportions of the configuration was more refined and keen.

The courtyard rented by Luan Tingyu is still relatively large, with a main courtyard with three entrances and three exits, a side courtyard, and a warehouse. The two-story building in the main courtyard became the office, food and lodging space of the Fengwen Branch. So Ruan Zun used the side courtyard as a place for him to practice formations and make high-tech weapons of mass destruction. It is strictly forbidden to enter anyone other than yourself.

It's not enough to know the principle. First of all, it is necessary to draw, from large to small, from the outside to the inside, all the component compositions need to be depicted very carefully. This does not pose much of a challenge to the current Ruan Zun. His current spiritual power is so strong, his careful observation of things, and his memory is so firm in his heart that he has come out of the dust. I have practiced the formation of these days, so there is no difficulty in drawing.

Ruan Zun decided to make a military grenade similar to his previous life. There are several reasons, easy to carry, the production process is simple, the structure is not complicated, the cost is cheap, and the lethality is large. Ruan Zun has seen this kind of grenade, and he has used it himself, and it is easy to buy on the black market, a few hundred yuan a piece. On one occasion, he secretly threw a fried fish into a pond. It turned out to be really good, and after the explosion, there was a big fish on the surface of the water that had turned over.

However, that was also the result of his young age at the time and did not know the severity. After knowing this, Boss Zou beat him severely. Because of the sound of the explosion, it is likely to cause a lot of unnecessary trouble to the tomb robbers. Since then, Ruan Zun has never dared to touch Boss Zou's small arsenal again.

The structure of the grenade is also not complicated, triggering a pull ring, explosives, fragmentation structure, safety device. A few very simple parts, Ruan Zun has long been able to figure out the door. At this time, when I thought about it again, I thought very clearly.

The people in the Fengwen Branch, as well as Luan Tingyu, were very curious about what the young master was thinking all day long, and he seemed to only be trapped in the house all day long to draw pictures, and the drawings were very strange, like an oval melon, and the melon was full of lumps. There are also small drawings one after another, all of which are very simple parts. This is what Du Chong, who delivers food to it every day, said.

However, even if he Du Chong is not shallow, he can't guess what mysteries are on those drawings.

They were even more surprised to find that after drawing the picture for two days, the young master finally went out, locked the side courtyard inside and out, and went out with a calm face and hands behind his back. At the door, he also met a challenger who was interested in pursuing Miss Murong.

So, the young master was in a good mood and drew a word on the opponent's face, and then hummed a minor tune and continued to go to the city.

When they came back again, Luan Tingyu and the others couldn't believe their eyes. The young master led the way in front, and there was a row of carriages behind him, and the carriages were pulled by the furnaces, bellows, all kinds of forging hammers, tongs, coke, all kinds of molds and tools?

What's the rhythm? Is it moving the blacksmith shop home?

This conjecture proved to be correct. Ruan Zun really moved the blacksmith shop home. He commanded the hired men and blacksmiths, and in the rooms in the side courtyard, a blacksmith shop was built in an orderly manner. Then the carriage and most of the blacksmiths had received a large bounty and withdrew, leaving only an old blacksmith who was teaching the art of making it in the field.

"Brother Du, young master, what's the matter with him?" a scholar asked Du Chong boldly.

"He has his ideas, and we don't care about him. Take the money and do what you have to do. Du Chong said.

"But Brother Du?" said a scholar with a bitter face, "this kind of iron method is really disturbing to write." ”

"Then go and go to the market to collect news!" Du Chong said, "Go to all parts of the city to find all kinds of useful books and pictures that the young master said!"

Another carriage brought a wagon of unprocessed crushed iron ore. The old blacksmith was a spirit man, and only a spirit man had the ability to use spirit power to make fine iron and more powerful spirit soldiers. The strength of ordinary people, even if it is fine iron, is helpless.

I left the old blacksmith to live in the Fengwen Branch, and studied hard for two more days, so that he mastered the basic process of refining spirit soldiers, and the rest could only rely on his own hard training and experience. Send the old blacksmith away, and begin to temper the refined iron ore himself.

First of all, the pieces of refined iron ore were beaten into pieces of fine iron. The process is very simple, just use a sledgehammer made of heavy iron, use spiritual power, and keep beating. The process is simple, but the control of spiritual power is very demanding, and it can actually be regarded as a process of cultivating the use and power of spiritual power, because it is necessary to shape the original irregular things. In this process, he continued to ponder the skills and strength of the use of spiritual power, and even gained quite a lot.

Moreover, Ruan Zun was pleasantly surprised to find that in the process of shaping those refined iron ores, he seemed to have been using spiritual thoughts, forcing the force to reach a certain image in spiritual thoughts when acting on them. Such a process can also cultivate spiritual thoughts to a certain extent!