Zheng Sheng walked around the room excitedly.

But he soon calmed down and felt that there was no need to rush this matter and that he could try it next month. His main task now is to get the fireworks as soon as possible!

With the exchange of play, Zheng Sheng exchanged the necessary Zheng Zi paper every month.

After breakfast, Zheng Sheng and Liu Wei'er started working.

She looked at the mountains of ore and wondered, "Shizi, are we going to grind them all into powder today?" ”

"No, it shouldn't be used that much, we'll do our best!" Zheng Sheng also had a headache about the piles of stones that formed a hill, and the family members worked too hard.

Zheng Sheng took out the "iron bowl" and "iron pound" that he had the blacksmith specially made—this was his mortar and pestle, which were specially used to grind ores.

He and Liu Wei'er each had a set of tools, and the two sat on the chairs facing each other and began to work.

However, Zheng Sheng and Liu Wei'er hadn't been working for a while, and Mrs. Wang, who was worried that her son had run out without saying a word, came to visit, and she was surprised to see Zheng Sheng grinding stones: "Ground into powder? Is saltpeter ore ground into powder, is it used to make ice? What do you do by grinding sulfur into powder? ”

Zheng Sheng wanted to surprise her after he developed the fireworks, so he had to say vaguely: "I have another use." Chemistry experiments to use. ”

Mrs. Wang had a blank look on her face, "Chemistry? Oh, is it the new discipline that Mrs. Han said? What do you need for chemistry experiments? All right! ”

She thought for a while, clapped her hands and said, "Sheng'er, sniff'er, don't do it!" It's winter, and the family is fine, so I'll find someone to help you! ”

Mrs. Wang immediately found a few family members, Zheng Sheng wanted to refuse, but when he thought that they worked very hard yesterday, they must not be lazy today.

Therefore, he and Liu Wei'er retreated, and Zheng Sheng was relieved to see that the two family members were working hard.

Zheng Sheng felt that he was really wrong, Wanyun They can't do it well, it doesn't mean that adults can't do it well, this kind of pure manual work with almost no technical content, he asked Liu Wei'er to do it, it's really stupid!

However, this is also a problem in the population structure of Qingzhuling, Qingzhuling now has a tiger guard battalion, a civil and military battalion, a large kitchen, two guards guarding the secret room, several of his maidservants, three teachers of the civil and military camp, Bu Bo, and no one else.

Miscellaneous work, such as chopping wood and carrying water, is done by the guards of the Tiger Guard Battalion in turn.

He needed a few family members to take over the job. Families may be afraid to move forward when faced with danger. But in normal times, when doing things for the main family, I still work very hard!

Freed from grinding ore, Zheng Sheng prepares for the second step of the plan.

"Take it apart?" Liu Wei'er couldn't believe what she heard, "There are only two left, and you have to open one?" What a pity! ”

Zheng Sheng asked her rhetorically: "If we don't disassemble it, we won't be able to make new ones if we don't know the internal structure of the fireworks, do you want to see these two fireworks?" Or do you want to see a lot of them in the future? ”

Liu Wei'er understood: "Then let's take it apart." ”

The action begins.

The first problem Zheng Sheng faced was how to dismantle it. The fireworks casing is made of cardboard, apparently to seal tightly, because it has to be burned in a confined space to create a huge punch.

Zheng Sheng and Liu Wei'er carefully observed the paper tube.

"The wire below is called a fuse, and if you light it with fire, it will slowly burn into it, and with a 'boom', it will detonate the * inside." Zheng Sheng explained to her.

Liu Wei'er nodded, she had already seen the process.

"This is the surface, but what we need to look at is what is it like on the inside? Catchy, uh, catchy is open? Zheng Sheng looked at his fingers and poked them in easily, and the upper part was actually just a thin layer of paper!

He was so scared that he almost threw it out.

However, there is no danger if it is not ignited. Calming down, Zheng Sheng cautiously looked inside, it was so dark that he couldn't see anything.

Walking into the sun, by the light, Zheng Sheng saw the inside of the fireworks, and he was even more surprised, "Is it empty?" It's not empty, there's something underneath. ”

He felt cheated, most of the space inside the fireworks was empty.

However, Zheng Sheng immediately thought of the barrel and the barrel from the fireworks, the fireworks will shoot the fireworks into the sky, the muskets will fire bullets, and the cannons will fire cannonballs, all of which are the same reason.

Zheng Sheng understood the principle of fireworks launch.

He began to move further, and Zheng Sheng carefully used a knife to slowly cut through the two-centimeter-thick outer shell of the paper tube from top to bottom.

Until, two-thirds of the way down, Zheng Sheng's dagger felt something new appear in the fireworks.

After thinking about it, Zheng Sheng cut the upper part of the firework tube directly and horizontally, and the thing inside revealed its true face, which was a white paper ball with a diameter of about three or four centimeters.

Continuing to think of the artillery, Zheng Sheng felt that it should be equivalent to a cannonball on a cannonball, and the beautiful fireworks blooming in the sky were the result of its burning explosion.

"It turned out that there was a small ball wrapped in the barrel." Liu Wei'er whispered.

Zheng Shenggan is most interested in it, but the most important thing now is to finish the fireworks. Zheng Sheng continued to go under the knife.

He carefully cut open the shell, keeping the knife edge from breaking the ball. Zheng Sheng made two cuts on the left and right sides, and then slowly cut off the shell, exposing the entire sphere.

Underneath it was a layer of cardboard, and Zheng Sheng lifted it up and found a fuse attached to the cardboard and the sphere. Zheng Sheng imagined, after the * ignited, a huge impetus pushed the sphere to rush out of the paper tube and fly into the sky, the fuse at the bottom of the sphere detonated the sphere, and the fireworks exploded!

Liu Wei'er continued to stare curiously. Zheng Sheng asked her to hold the orb, and he continued to slash.

There were also two layers of cardboard underneath, and Zheng Sheng slowly lifted them, revealing the black object underneath.

"Ahh Be*! Liu Wei'er exclaimed, she was very afraid of this thing.

Zheng Sheng slowly took off the ball and cardboard, the other end of the fuse was on top of the * layer, Zheng Sheng took the paper, and poured the * on it slowly, the amount was very small, Zheng Sheng felt that their mass might be less than one or two, and the * layer was only two or three centimeters thick.

Zheng Sheng continued to cut down, and found that the part further down was all clay. The clay layer was thick, about ten centimeters, and there was nothing to pay attention to except for the one in the middle of the clay that needed attention.

After cutting, Liu Wen'er was still unsatisfied, "Is this the end?" ”

Zheng Sheng picked up the ball, "No, this is the most important thing." ”

He continued to cut the knife. Zheng Sheng found that the spherical shell of the ball was not as thick as the outer shell, but it was also very dense. He opened the spherical shell and found that it was also black*.

Liu Wei'er was extremely disappointed: "It turns out that the ball is also *!" ”

Zheng Sheng poured out the powder inside, observed it carefully, and said with a smile: "Sniff, take a closer look, what's the difference between this and *?" ”

Liu Wei'er looked at the objects on the table carefully, she turned her head and looked at the other pile carefully*, "This one is mixed with things, it's this white thing." What is it? ”

Zheng Sheng pinched a small silvery-white object, "This is the metal that glows red with the flame color reaction, right?" ”

Liu Wei'er also pinched one and asked, "What kind of metal is this?" ”

Zheng Sheng is also full of question marks, the flame color reaction is yellow sodium, green is copper, these are the most common he remembers, but the others? He's forgotten!

"Well, we now know what fireworks look like. The next step is to make it! ”

Liu Wen'er nodded excitedly.

Zheng Sheng looked at the fireworks that he had dismantled and cut into a large pile, and said, "*, the family members are still grinding, don't worry." The amount needed is not very much, and a firework is only a few taels. ”

"The key is metal." Zheng Sheng paused, "We need metal. Copper has; Sodium? Well, the salt we eat is sodium salt. There is also sodium, but I don't know if the compound can be used. ”

"It's a metal that emits green and yellow light." Liu Wei'er thought about Zheng Sheng's words in class, "Shizi, what about other colors?" Red, blue, green? ”

"Other colors?" Zheng Sheng's brain hurts, "Magnesium, iron, calcium, zinc, tin? "Why didn't he write down these knowledge points when he first memorized them! It's been six or seven years, and he's almost forgotten all about the flame reaction in his head.

"Magnesium, iron, calcium, zinc, tin." Liu Wen'er silently wrote it down.

Zheng Sheng looked at the white metal that magically appeared in the fireworks, if its source was not saltpeter, it could only come from clay, a rare element in the soil. Could he continue to trade dirt for flame-colored metals of various colors? Give it a try!

However, although there are many kinds of elements in the soil, there seem to be more types of elements in the seawater! You can also try.

However, for the first batch of fireworks, Zheng Sheng could only use copper and salt first. The number of redemptions three times a month sometimes feels really small! Zheng Sheng sighed.

Subsequently, he and Liu Wei'er studied paper shells, which are very thick and dense. Zheng Sheng felt that this paper shell could actually be replaced with iron, just like a cannon fires a cannonball. However, Zheng Sheng felt that the fuze problem was not easy to solve. The most troublesome way is to refill the clay and fuse after one firing.

However, this needs to be practiced slowly in the future.

Zheng Sheng felt that the iron ball in the fireworks of this iron pipe was the simplest thermal weapon!

Now, he still needs to make the shell out of paper.

"How do you glue the paper together?" Zheng Sheng took a piece of paper and asked.

"Is it okay to use glutinous rice juice?" Liu Wen'er proposed.

"Glutinous rice juice?" Zheng Sheng thought about it, he knew that this was the best adhesive right now, "I can only try!" ”

The shell of the sphere is not difficult, and it only needs paper to wrap it, and the key is the adhesive.

Finally, the fuze, Zheng Sheng looked at it carefully, and felt that the material of the fuze was something like paper or hemp, and the fine particles on it were *!

But just sprinkle * on the twine and it's a fuse? Zheng Sheng doesn't feel that simple, Sa? It can only be sprinkled on the surface, and the burning effect is probably not obvious.