"This king just has back pain and walks around, oh no, this king is here to see how the research on the rear loading gun is progressing." The morning exercise was a bit too violent, and Liu Honggradually only felt that his back hurt and blurted out that he had made a mistake, and hurriedly said haha.

"The old man's maiden family is a famous doctor in Fengxin County, and the medicinal wine it is equipped with is known to have the effect of strengthening muscles and bones, and the old man will repair a book and let them bring a few pots when he goes back." Uncle Song has never seen anything at such an age, and he doesn't say anything, only that this wine is used to strengthen the body.

"Oh, ah, ha, although this king doesn't drink much, but this wine really has such a miraculous effect, this king has to taste it, there is hard work." Liu Hongjian did not shirk, and said with a hippie smile.

I have long heard that people in ancient times liked to use tiger whips, mountain ginseng and other precious herbs to concoct medicinal wine, and the effect is excellent.

At this time, the mountains and fields are full of wild beasts, and those who kill a tiger or something not only do not have to squat in the black house, but also be praised as cattle or heroes by the villagers, and those old ginseng, Ganoderma lucidum, and all kinds of whips are all pure natural and pollution-free, and they are not much purer than later generations.

"There are some trivial things, Lord He Lao is worried, as for the matter of installing firecrackers after you just said, don't hide it from the prince, I'm really ashamed that the armory station doesn't have a clue now." Song Yingxing frowned and said apologetically.

The people of the Ming Dynasty called the gun a gun, and Liu Hongjian always opened and closed his mouth before the gun and the gun after the gun, so that now the border army and the Beijing camp are accustomed to this name, although Song Yingxing does not understand why Liu Hongjian called the gun a gun, but he does not care.

The blueprints of the rear-loading gun have been given to Song Yingxing, not only Song Yingxing, but also four or five veteran firearm craftsmen from the Ordnance Institute have also touched their heads together, and the old craftsmen in the Ordnance Institute are very uninterested in this strange thing that eats from the buttocks.

This was almost the same dilemma as it was when the breech gun was first introduced more than a hundred years later, when Dreiser, the father of the breech gun, showed the first breech gun to the German general of the time, who believed that people eat with their mouths, and so did guns.

Sloppy as Westerners are still like this, not to mention these old craftsmen who have been exposed to Confucian culture.

Song Yingxing didn't care much about whether it was a bullet from the mouth or a chrysanthemum, he thought it was just a firearm that had changed, but when he really studied it, he found that it was not that simple at all.

The sketch provided by Liu Hongjian was very different from the structure of the front-loading gun they knew, and it was also a simple drawing, and Uncle Song pondered for a long time with reading glasses before he figured out the firing principle of the rear-loading gun, that is, the focus was on the projectile.

Something akin to replacing the flint firing device of a front-loading gun with a needle, the heel needle after pulling the trigger hits the projectile, ejecting the projectile out of the chamber.

It's just that this is a little difficult to understand for Uncle Song, because he didn't find the medicine room of the breech firearm at all, and there is no place to hold gunpowder without the medicine room, so could it be that the projectile room was blown out by the needle?

It's unbelievable.

Uncle Song even set fire to the firecracker to make a strange musket with a medicine chamber in the rear, but the airtightness could not be guaranteed at all, and the projectile was loaded from the back, resulting in the poor accuracy of the projectile that was one size larger.

"But it's stuck in that rear-loading bullet?" Liu Hong said casually.

"Your Excellency is wise!" Song Yingxing originally wanted to explain the difficulties encountered, but he didn't expect Liu Hongjian to say it, which surprised him.

In the eyes of Uncle Song, Liu Hongchuan is the umbrella of the craftsmen of the ordnance institute, his vision is unique and maverick, but in actual operation, he is almost a blank slate.

Although I don't know where Liu Hongjian got the drawings, Song Yingxing knows that he shouldn't ask, and he still does what drawings Liu Hongjian gives him, unless he encounters a problem that can't be solved.

Uncle Song also knows the truth of not being ashamed to ask, for example, although he knows that in engineering, Liu Hongji's attainments are not as good as a random craftsman in the ordnance institute, but sometimes he can always come up with some ingenious ideas.

It was Liu Hong's gradual concise and concise explanation of the problem of the rear loading firecracker, and Uncle Song's eyes suddenly lit up.

"Where is it, this king is also guessing, does Song Lao know such a thing as thunder mercury?" Liu Hong gradually tried to ask.

As a later generation, Liu Hong gradually knew the general structure of the bullet in later generations, which was nothing more than a metal cartridge case with a built-in warhead, gunpowder and primer, and the warhead and metal cartridge case were not difficult, although they were all handmade, but the Han family did not lack people, and the craftsmanship could also be guaranteed, but the primer was not easy to do.

The primer is the fire cap, which can ignite the entire ignition system under the action of a small external force.

To put it bluntly, it is a fuse, which is found in the grenade made of this thing ordnance, but the fuse of the grenade is relatively rough, which is nothing more than by pulling out the built-in fire rope in the wooden handle, and igniting the fuse gunpowder by friction.

This thing is only barely in the grenade, and the stink bomb rate of the grenade is still as high as 18 percent, a problem that the firearms craftsmen of the Ordnance Institute know, but no one can solve it.

The reason for this is that more sensitive flammables are simply not available.

During the Anti-Japanese War, the detonator of the wooden-handled grenade was used, and the main component of the detonator was mercury thunderate, that is, mercury thunder, chemical equation [Hg(ONC)2].

Because this thing is highly toxic, unstable, and corrosive to the barrel and cartridge, and has since been replaced by more advanced substances, the materials he brought with him only have a few words about this mercury thunderate:

Mercury thunderate, a white or gray crystal, was the earliest initiating charge and was highly sensitive to flames, pinprick and impact.

Nope.

It is these few words, Liu Honggradually wants to reward the person who wrote the book with a gun, and the most annoying thing in his life is that those who write books always think that readers know everything, and all high-tech is only a few strokes.

He knew it was mercury, but what about acid? What is Ray?

As a half-hung college student, Liu Hongjian said that it hurts.

He knew that there were sulfuric acid, nitric acid, hydrochloric acid, and vinegar were also sour, but this was in the Ming Dynasty, and the book did not say what the name of these acids was at this time.

Hell knows if there are any of these bird acids at this time!

"Thunder mercury? The old man had never heard of it. Song Yingxing frowned, thought for a while, shook his head, and said.

"To put it simply, mercury is mercury, and mercury reacts with an acid to create something new, and this thing can solve the primer problem of our breech guns."

Liu Hongjian can only summarize it like this, and he is also very helpless, because the author in the book writes more generalizations than him.

"Mercury...... Sour ......," Song Yingxing frowned and groaned.

He did not doubt the conclusion that Liu Hongjian had said, because he understood that Liu Hongjian would not talk nonsense on this, and it had been proved that all of Liu Hongchuan's suggestions were constructive in such difficult problems.

"It's okay, the old man will go back later and let the craftsmen of our ordnance institute study it, as long as there is a direction, our ordnance institute will definitely be able to create this mercury thunder acid!" Song Yingxing put down the thoughts in his heart and said solemnly.

PS: Push a book "The Savior of the Tang Dynasty" to be reborn as a gentleman of the Tang Dynasty, before he has time to enjoy the life of the second ancestor who is not ashamed for a day, he will face the bad luck of the fall of his father and the destruction of the family.