Three Kingdoms, at the beginning of the game, recognize the thief as the father, hit the spectacle,

……

Hades?

Is there really such a thing as hell in this world?

Even after seeing Zuo Ci, Nan Hua, and Yu Ji who could be called immortals, Zhang Yan still had doubts about this question.

Not to mention anything else, if there are really ghosts and gods in the underworld, why have I wandered around the Eastern Han Dynasty for so long and never encountered them?

……

"My fellow, let me ask you one more question... Seeing what you mean, is it possible that the legend of resurrection from the dead is true?"

Zhang Yan's expression was a little weird.

……

"Hey, you see what you asked... I don't know that!"

Hehe scratched his head with a smirk, and the middle-aged man threw the question back to Zhang Yan with one word.

"Let's just say that the people around us are still alive, and I haven't seen anyone who really died once...I'm afraid I don't even know who to ask your question."

……

"but……"

"But I heard a rumor from my parents..."

After a while, the middle-aged man suddenly looked up at Zhang Yan and the others as if he remembered something:

"I once heard that if you use white stone powder to draw a small circle around the paper money for ancestor sacrifices at home, no matter how strong the wind is that day, the yellow paper will not be blown into the circle by the wind. go outside."

……

"Oh, what if paper money flies out during the burning process?"

Zhang Yan asked one more question with great interest.

……

"If it flies out... then it's going to be flooded..."

I don't know whether he was pretending to be stupid or something, but the middle-aged man who had seemed a little clever before, when faced with Zhang Yan's question, his face looked a little strange.

"Don't laugh at me, I have burned paper for my ancestors for many years, but I have never encountered a situation where paper money flew around..."

……

……

……

In this way, a small episode was quickly skipped by Zhang Yan.

It is a custom to burn paper during harvest and festivals, but Zhang Yan did not come out tonight to burn paper.

Firecrackers are the main object of his attention today.

……

"My lord, the stove has been lit, and we can start anytime."

While Zhang Yan and the others were wandering around and saying hello to those few people, at the corner of the original street, the servant who came out with Zhang Yan at home had already silently lit the fire.

Blown by the dry monsoon in winter, on the fire about half a meter high, the crimson flames danced slightly as if they were alive.

"Yeah, just put this thing in there, right?"

After taking the dry bamboo knots that the mansion had entrusted someone to prepare a few days ago, Zhang Yan took out a thin one, and casually inserted it into the fire in front of him.

……

"Crackling-"

The crisp sound is not so much a firecracker, it is better to say that it is no different from the sound of a branch breaking.

Looking at the bamboo knots slowly turning into ashes in the flames, Zhang Yan's gaze became long and deep as if recalled.After a few full minutes, the bamboo joints burned out, and he sighed, and the whole person became a little silent.

……

"This firecracker... is almost meaningless after all."

"Ying'er, do you want to see something more interesting?"

……

At the moment when the bamboo joints exploded, Zhang Yan seemed to have traveled through thousands of years of barriers and returned to China 2000 years later.

It's just that the memories of his hometown didn't make him feel lost. Instead, he showed a high-spirited look, and turned his head to look at the people beside him with a smile.

Qiaoying and Ye'er are the two who know best.

I bought a lot of raw materials for gunpowder from the market during the day, and when I was free at night, I tried to make some simple firecrackers.

No matter how dazzling the flames are, at least, in terms of momentum, firecrackers are comparable to firecrackers... or to say that explosive sticks are much stronger.

……

One sulfur, two nitrates, and three charcoals, this is the ratio formula in the black powder formula that can maximize the explosive power.

It's just that it is obviously unnecessary to make such high-power black powder for the sake of simple sound.

Zhang Yan just wanted to use this thing to experience the festive atmosphere. He didn't really plan to use black powder to make a large number of firecrackers, and he didn't know if it existed... The Nian Beast from the land of Yizhou was rumored to be desperate.

Chapter 10 Jinyushengdi

Just do what you say, Zhang Yan and others watched the excitement outside, Qiaoying and a few girls' homes also set off some firecrackers, and a group of people gathered together and returned to the mansion.

Only a few young and strong servants were left to watch the fire outside, lest the fire get out of control and ignite their own courtyard.

Back in the mansion, the kitchen was still preparing the evening New Year's Eve dinner, Zhang Yan called a few servants, went to his warehouse, took out all the raw materials purchased during the day, divided them into small piles, and placed them in the yard like this.

As for himself, he moved a small mustache stool and sat among a pile of raw materials——

He said that although he had never tried to make firecrackers himself, they were simple gunpowder products, not fireworks of later generations... Zhang Yan felt that he could barely make two gestures.

……

"Hey, master, are you going to make that so-called firecracker?"

"Saltpeter...sulphur...these things are not very safe."

"Why don't you step back and let the servants in the mansion do it for you?"

……

Frowning and standing behind Zhang Yan, Ye'er looked at the materials in Zhang Yan's hands, subconsciously worried.

She is not quite the same as Qiaoying. Although Qiaoying and Zhang Yan spend more time together when they are at home on weekdays, Yeer is the one who always follows when they are doing business outside, especially when they are in and out of officialdom and the army. The "little follower" next to Zhang Yan.

Whether it's gunpowder or anything else, Ye'er knows all these novel things that have nothing to do with ordinary people's daily life.

She even went with Zhang Yan to observe the production of artillery in the industrial department of Lujiang in her spare time, and watched the workers experiment with these things on the spot.

For the danger of gunpowder, Ye'er knew better than anyone else.

……

"Hehe, don't worry. I grew up touching these things. I know how dangerous it is."

"It would be even more dangerous if they let clumsy guys like them do it. I might as well do it myself."

Smiling and turning back to comfort Ye'er, Zhang Yan didn't say much, just quietly took a few small bowls, and then carefully operated according to the information in his memory.

……

Charcoal, saltpeter, and sulfur seem to complement each other, but in fact, they play completely different roles in black powder.

The main principle of gunpowder, or primitive explosives, is that combustibles burn violently within a certain range, generating a large amount of gas and heat that cannot escape, and triggering small-scale explosions.

In this process, charcoal is the protagonist of the continuous combustion of gunpowder. Sulfur can increase the flame sensitivity, and it is the substance with the lowest content in gunpowder——fire nitrate, which actually triggers an explosion and makes the combination of sulfur and charcoal change qualitatively. Flame salt, potassium nitrate.

As long as the proportion of this substance in gunpowder is increased, the sound of gunpowder explosion can be significantly improved, and because it cannot generate too much heat, the danger of gunpowder is significantly lower than that of black powder with the correct proportion.

This is a great thing.

……

Different from military use, Zhang Yan doesn't need the firecrackers he made to be flammable or explosive, he just needs to hear a sound when he ignites them.

If it is really guaranteed that the gunpowder used in the firecracker battle is the best ratio, then this big Chinese New Year, a good happy event, might have to be turned into a funeral by him.

Similarly, after determining the gunpowder surface used for the main body of the firecracker, the ratio of the powder surface used to make the lead wire is also determined——

It only needs to greatly reduce the ratio of saltpeter and increase the ratio of sulfur to charcoal, and the violent overload explosion will be replaced by a more stable and gentle combustion reaction.

Tighten this new type of high-sulfur powder into a shredded paper tube, and a simple lead wire is made.

……

After taking a bamboo tube that had been dried and treated briefly, Zhang Yan made a gesture, then cut off the top of the tube with a knife, and filled in the prepared medicinal noodles.

For safety reasons, he didn't even beat raw egg whites in it, or rub the gunpowder into granules and dry it.

A firecracker is a firecracker, and it was originally a holiday item.If you have to make civilian products with the so-called "optimal ratio" and "best craftsmanship" military formulas in later generations, that is the real sense of brain flooding.

After filling and compacting the gunpowder, Zhang Yan pressed some flammable high-sulfur gunpowder onto the seal, and then sealed the top of the bamboo tube with shredded paper.

This series of operations faintly reminded him of last year or the year before last, when he and Ma Jun were tinkering with black powder.

At that time, I also used bamboo tubes as containers, and Ma Jun trial-produced the first batch of gunpowder weapons-hand grenades.

It's just that they didn't use bamboo tubes that are as thick as fingers now, but thick bamboo tubes that can be used to make bamboo rice.

That power is much more frightening than this kind of gadget.

Thinking about it, Zhang Yan couldn't help laughing softly.

When he came back to his senses, a row of large and small firecrackers had already been set up in front of him.

Due to the shortage of materials, the size and charge of each bamboo tube are different.But in general, that is, the difference between the thumb and the little finger, the difference is not too big.

"Master, is this the firecracker battle you mentioned?"

With a twinkle of curiosity in her eyes, Ye'er lay on Zhang Yan's shoulder, blinking like this, watching Zhang Yan's work one by one.