The violent explosion shocked everyone present.

Even Zhu Youzhen was a little frightened.

The Jinyi guards, who were in charge of Zhu Youzhen's safety, commanded Wang Zide, needless to say, and more than a dozen Jinyi guards pulled out their knives on the spot and surrounded Zhu Youzhen in the middle.

But that's just for a moment.

When the yellow leaves fell to the ground, Zhu Youzhen also regained his composure, and even began to be a little curious.

Only Song Yingxing and Bi Maokang were still in a panic, they didn't know if it was an earthquake or someone deliberately caused an explosion to startle the driver.

At this time, Fang Yizhi, who was accompanying him, ran over: "Back to Your Majesty, it was Wang Gongchang and the Gunpowder Bureau that exploded, and the ground was directly blown out of a big crater. ”

"Wang Gongchang and the Gunpowder Bureau, now Sun Heding is in charge."

"This, what is this Sun Heding doing, doesn't he know that His Majesty is coming today?"

Song Yingxing was a little annoyed.

"Out of the way, go and see". Zhu Youzhen said with a smile and raised his feet first, and Song Yingxing and others hurriedly followed: "Your Majesty, don't go." ”

"What are you afraid of, is it possible that his Sun Heding can make such a loud explosion again, if he can, then I have to take a look."

Zhu Youzhen remembered that during the Apocalypse, there was a huge explosion in Wang Gong's factory in the Ming Dynasty.

Although he didn't know the reason for that time, it was still an unsolved mystery.

But today's explosion, he didn't want to miss it.

As soon as Zhu Youzhen arrived at the Gunpowder Bureau, he saw that the explosion site in front of the Gunpowder Bureau was full of broken bricks and glass shards, and more than a dozen fat pigs were blown into a blur of flesh and blood.

There was indeed a large kang left over from the explosion on the ground, and the choking white smoke went straight into the nose, and everyone present couldn't help but cover their noses.

Zhu Youzhen was ecstatic for a while, thinking about what kind of high explosives Sun Heding had made, it was so powerful, it was more powerful than black powder at first glance!

"What about Sun Hedingren? Tell him to come to me right away! ”

Zhu Youzhen asked loudly.

"Your Majesty forgives your sins, and Weichen is in front of you", at this time, a human voice came from the ground.

Zhu Youzhen looked down, but saw Sun Heding lying on the ground.

Sun Heding was covered in withered grass and leaves, as well as dirt, and when he stumbled to his feet, his face could still be seen covered in blood.

"Sun Heding, what are you doing?"

Song Yingxing asked in a somewhat stern tone, but because Emperor Chongzhen Zhu Youzhen was here, he also tried his best to suppress his anger and did not question Sun Heding loudly.

"Elder Song Ge, what did you say?" Sun Heding looked at Song Yingxing and leaned his ears closer.

"Your Majesty, forgive me", Song Yingxing arched his hand to Zhu Youzhen, and then came to Sun Heding's ear, and asked loudly: "This official asked you what you were doing, what happened to the explosion just now!" ”

"Explosion?" Only then did Sun Heding hear clearly what Song Yingxing said.

"It seems that his ears have been broken, he is so close to the explosion site, and he doesn't know some protective measures, but it's normal, I just hope to recover, you must open your mouth wide in the future when you encounter an explosion at this distance."

As he spoke, Zhu Youzhen hurriedly asked Sun Heding loudly if there were any casualties and the cause of the explosion.

"Back to Your Majesty, Wechen thought that since he was in charge of the work of the Gunpowder Bureau, he wanted to develop gunpowder, but now no matter how the gunpowder is redesigned, there is no room for progress, I heard His Majesty say that gunpowder also has nitrified gunpowder and smokeless gunpowder, Weichen thought that since the cotton can be washed with nitric acid and sulfuric acid to get the cotton wool, and the cotton wool can already explode and now has been used as a good lead, is it possible to get the nitrified gunpowder out first;

Your Majesty, you also said that adding glycerin to nitric acid can make a liquid called glycerin trinitrate, saying that it is easy to produce a violent explosion and is much more powerful than the current gunpowder, so Wei Chen thought about trying it, and found a few prisoners and Taoist priests who used to make alchemy together with vinegar, lard and caustic soda to drum out this trinitrate glycerin. ”

Hearing Sun Heding say this, Zhu Youzhen nodded: "But I also approved it in your song, this thing is very dangerous, a slight vibration can cause a violent explosion, and I also approved three cautions on it, don't you remember?" ”

"Weichen naturally remembered, but Weichen just wanted to see how violent the explosion was, so he thought that His Majesty happened to come today, and he just happened to test it for His Majesty first, but who would have thought that this effect was really good, and the smoke and dust were much less than black powder, maybe he could really rely on this to make smokeless gunpowder!"

Sun Heding laughed as he spoke, his black face showing a mouthful of white teeth.

Zhu Youzhen smiled slightly, he didn't expect Sun Heding to feel not scared but excited, it seems that he is really interested in these.

Sun Heding produced glycerin trinitrate, but Zhu Youzhen was not surprised.

This experiment is indeed not too difficult, it is nothing more than the reaction of nitric acid and glycerin, and glycerol is also easy to extract, and lard and caustic soda are heated for reaction, and then cooled to make it stratified, and the condensed solid can be used as soap, and the liquid is a mixture of glycerin and caustic soda aqueous solution.

Caustic soda can be neutralized with acetic acid, sodium nitrate can be removed by recrystallization, and then water can be removed with quicklime to obtain glycerin.

This is why Sun Heding said that lard and vinegar and caustic soda should be used.

As for caustic soda, it is sodium hydroxide, this highly corrosive alkaline substance can already be manufactured in Daming, and it can be obtained by reacting with hydrated lime, that is, calcium hydroxide, and the alkali used to make steamed bread, that is, sodium carbonate.

Needless to say, nitric acid is not to mention, Tiangong Kaiwu has recorded the preparation method of various nitrates, and nitrogen dioxide can be obtained by calcination of nitrate at high temperatures, and nitrogen dioxide can be reacted into nitric acid when it meets water.

These experimental theories are not difficult, and Zhu Youzhen also helped Sun and Ding popularize a lot, but the key is that this kind of experiment is very dangerous, involving two strong acids and strong bases.

Zhu Youzhen didn't expect Sun Heding to really rush to do it, and he really got nitroglycerin.

"Is there any nitroglycerin still there?" Zhu Youzhen asked loudly again.

"No, Your Majesty said that this thing will explode if you touch it lightly, so Wechen simply built an experimental shed in the explosion field, made this thing in the shed, and put nitric acid in a glass basin, Wechen actually didn't know how much glycerin to add appropriately, anyway, it was all added, and then Wechen ran outside and shot it with a musket, and the musket was still specially approved by Bi Butang, but I never thought that it would explode with such a great power just after a shot, and now the glass slag all over the ground is the wreckage."

Sun Heding pointed to his face as he spoke: "These scars are also scratched by glass slag." ”

"Your Majesty, Wechen applied for special project funds, Wechen wants to surrender this glycerin trinitrate as soon as possible, don't let him explode so easily, let him be obedient, Wechen believes that as long as this is made into gunpowder, it is definitely stronger than the current gunpowder!"

Sun Heding couldn't care about the scars on his face, and he was busy asking Zhu Youzhen for money.

100 book coins to reward Dongfang Lin 588 book coins to reward Cheng in attendance, Fei Cong also 100 book coins to reward the boutique store "Guarantee Authenticity" 100 book coins to reward Mozi play 588 book coins to reward, yesterday more than 30,000, the new additions are only 16,000, not much more than usual, it seems that there are still many book friends to see piracy, alas, in fact, it doesn't cost much to see the genuine version, and now it costs dozens to watch a movie casually. In any case, please also ask book friends to subscribe to support, the author code words are not easy, back pain not to say, although the text is so simple and a single sentence, but a process and a principle is to check a lot of information to determine whether to write, for example, in order to determine the gunpowder, I checked the history of modern gunpowder development for a day to know some, sometimes writing history in order to pursue logical reasonableness can only pay more effort, continue to explode more 10,000 today, these days may be, for the gift of Mother's Day this month or more efforts. At the same time, I would like to thank the book friends in the group for providing information support.

(End of chapter)