On the way back to the mansion, Linda patted the money bag that had not changed much, and when he thought of the shopping process just now, the corners of his mouth curled up with a trace of helplessness and excitement. Pen, fun, pavilion www. biquge。 info

Although he bought a lot of things, he didn't spend a lot of money, not because the goods in the market were particularly cheap, but because after he entered each shop, the enthusiastic Shen Bing immediately introduced Linda to the shopkeeper. Although it was the first time for these shopkeepers to see Linda, they all recognized Shen Bing, the granddaughter of the county magistrate, and as soon as they heard Shen Bing say that Linda was the hero who killed the pirate monk and hundreds of pirates, their attitude towards Linda immediately became very respectful, and they immediately enthusiastically pulled Linda to pick anything at will, and did not charge a penny!

Although Linda felt embarrassed, it was difficult to refuse the hospitality of the shopkeeper, and that's not all, almost all the shopkeepers offered to send the things that Linda liked to the door for him, which saved him a lot of work in carrying them.

Thinking that all these advantages he took were all made for him by the eccentric Shen Bing beside him, Lin Da also felt a little helpless and happy.

Soon, the two of them returned to the mansion and came to the small courtyard in front of the room where Linda lived, where all the things sent by the shopkeeper were neatly piled up. There were several barrels of cooking oil drawn from animals, a few clean linen cloth and cotton, dozens of catties of sugar, a large pile of various alkaline medicinal herbs, a large pile of pyrite found from several blacksmith shops, dozens of glass bottles of various shapes, pots and pans and other containers, and a large number of other things. Seeing that everything she wanted was neatly organized, Linda finally showed a satisfied smile.

On the side, Shen Bing's face was full of doubts, she couldn't figure out why Lin Da bought so many strange things, so she couldn't help asking, "Brother Lin, what are you buying these things for?"

"I can't tell you just yet, but if you're free tomorrow, I'd like you to get a few more people to help. Lin Da said to Shen Bing with a smile.

Although he couldn't figure out what Lin Da was going to do, Shen Bing still nodded obediently. After sending Shen Bing away, Lin Da immediately returned to the room, took out a paper and pen and kept thinking about what he was recording, and from time to time ran to the yard to take out some things to check, and was busy until late at night before stopping, and finally conceived a complete and thorough plan.

What he wants to make is explosives.

To deal with demon beasts, Lin Da did not have the magical powers like a cultivator, the knife magic weapon had no spiritual power, and the bullets of the desert eagle were reluctant to use it. For him, who has mastered the rich technology of the earth, this is not a difficult task.

Early the next morning, Lynda got to work.

After some thought, he decided to start with the simplest black powder bomb. Speaking of black powder, this kind of thing was inadvertently invented by a Chinese alchemist on a distant earth, and it was one of the four great inventions of ancient China. Black powder is very easy to make, but compared with modern explosives, it is not powerful and safe enough, and it is easy to be ignited by static electricity, but under this production condition in Xiaoyu Town, this is also an option that Linda really has no choice.

To make black powder, all you need is potassium nitrate, sulfur, and charcoal. Linda found more than ten catties of dry soil on the side of the horse in the town's mansion, and after letting people remove the impurities, he slowly crushed it, which obtained natural nitrate. Then he set up an earthen kiln and threw a large amount of dried herbs bought from the herb store into it and burned them, and obtained a large pile of plant ash. As for charcoal, it was much easier, Linda casually found a few shops that sold charcoal, bought hundreds of catties of charcoal in one go, and asked people to grind it carefully. With these three things, the main materials for making black powder are complete.

Next, Linda began to throw the nitrate and plant ash into a tank in a certain proportion, adding enough hot water while stirring slowly. Then he poured in the mixture of sulphur and charcoal, stirring it until the mixture in the vat took on a certain color, and then he stopped. Finally, he put the finished tank in the sun to dry, let the water slowly evaporate, and what was left was the black powder he wanted.

It took almost half a day for Lynda to finish a tank, but there were still many raw materials that had not been prepared. He was able to complete these tasks so quickly, and he really owe the help of seven or eight young people brought by Shen Bing. These young boys and girls were all admirers of Lynda, and as soon as they heard that Lynda was looking for a helper to do something strange, they volunteered to come forward.

With the help of these young people, Linda's work was naturally much faster, and he patiently explained the production method to these young people, guiding them through each step of production. At first, the young people were not used to this kind of work, but they quickly became proficient.

For several days, under the patient guidance of Lin Da, Shen Bing and the others worked together to make more than ten cylinders of black powder in one go.

In the next few days, these more than ten cylinders of black powder have been exposed to the sun by Linda, but fortunately, the sun was very fierce during this time, and the water in the tank was almost completely evaporated in less than seven days.

After the black powder in the tank was completely dry, Linda found an open place away from the crowd alone, scraped off the gunpowder adhered to the inner wall of the tank little by little, and put it in the prepared wooden barrels, and after several days of work, he finally got more than 60 catties of black powder!

Of course, these black powders could not be used in actual combat, and then, Linda carefully packed the black powder into oval metal cylinders. These canisters were specially made by the blacksmith shop in the town a few days ago, and after the gunpowder was loaded, it could be completely sealed, leaving only one lead on one side, so that he got a complete earth bomb!