Cheng Chumo looked confused and looked up at Li Chengqian. After a long time of reaction, he reached out with a big palm fan and grabbed his arm: "Hurry, help me see what's going on with this thing. Didn't you say that putting gunpowder into this iron shell would be much more powerful? I'll do what you said, why can't you explode!"

After that, this kid was crazy.

The future heir of Duke Lu seems to have been ruined.

Li Chengqian didn't know if Cheng Chumo would fight to himself when he saw this. Anyway, he felt that if his son was taught to the wrong place, he would definitely not let the culprit go.

But the more this happens, the more challenging it is, right? Thinking that Lao Cheng was furious and had no way to deal with him, Li Chengqian felt that the thief was exciting.

The revolution has not been successful yet, and comrades still need to work hard!

come on!

Li Chengqian, who forced Cheng Chumo, who led the family to the wrong house, did not say anything shameful. Instead, he patted Xiao Cheng's arm very enthusiastically and asked seriously: "What's going on? Don't worry, just say slowly, we have time."

"Yes, it's done!" Cheng Chumo handed the iron lump in his hand to Li Chengqian, and then looked at him nervously.

Li Chengqian took the iron shell and held it in his hand for a while, and then measured the thickness of the iron shell with his fingers. The thickest part was about six or seven millimeters in the later generations. The grooves that were cut out could not be measured. It was visually estimated that it was about three to four millimeters.

"It shouldn't be? What's wrong?" Li Chengqian fell into deep thought after carefully observing the iron shell handed over by silently at the process.

According to the volume inside the iron shell, the shell will definitely be blown into pieces after filling it with gunpowder. As for why it did not explode, the problem should still lie in the gunpowder.

"Where are you equipped with gunpowder? Let me show you."

"What else can I do? I'll just take you to see it." Cheng Chumo said in his heart that I didn't have the patience to wait for someone to get the gunpowder. Doesn't it take time to go back and forth?

Following Xiao Cheng, he came to a crowded place. The busy craftsmen just looked at their group curiously, then lowered their heads to continue the work at hand - mixing the three ingredients reasonably, mixing them evenly, and finally making gunpowder.

Li Chengqian looked around and found that this was the first time he had come to the place where gunpowder was prepared. Seeing the bags of gunpowder wrapped in oil paper and moisture-proofing were piled up in the corner of the wall, he couldn't help but feel confused.

But this is also impossible. The conditions are limited, and you have no way to expect that people will pay attention to safety in life. It is already very good that these people can avoid open flames. What other bicycles do you need?

After walking around and barely looking at the production process, Li Chengqian asked when he was picking a pack of gunpowder at random while Cheng Chumo was about to take it away: "Are you all these people relying on them? The formula of gunpowder must not be leaked at the moment, you should be very clear about this."

"Don't worry, these people are all from craftsmen and live together, so they will definitely not be disclosed."

Speaking of confidentiality work, Cheng Chumo patted his chest and ensured that all processes were separated. The Firearms Department had four or five such places outside. Some were responsible for crushing raw materials, and some were responsible for preliminary preparation, such as mixing the two raw materials together to confuse the public.

When we get here, all the craftsmen need to do is to open the raw material packs, then mix and stir and then make the pack.

With such a guarantee, Li Chengqian felt a little relieved. The formula of gunpowder is too simple. You can learn it with a little effort.

After leaving the place where the gunpowder was prepared, he found an uninhabited yard. Cheng Chumo used a knife to directly cut the package, then inserted it with the tip of the knife, and picked a little black powder out.

Li Chengqian's mouth twitched.

Damn, why is this scene so familiar? It seems to be seen frequently on TV in later generations.

Seeing that he was still in a daze, Cheng Chumo couldn't help but pat him: "Chengqian, why are you stupid? Come and see me quickly."

"Oh!" Li Chengqian came to his senses and did not go to pick up the knife handed over by Cheng Chumo. He tore the package open, pinched out a part of the black gunpowder from it and put it in the palm of his palm to observe it carefully. With just one glance, he saw the key to the problem: "Chumo, is your gunpowder wrong?"

Cheng Chumo glared at the ox: "Why isn't it right? This is what you said."

"I'm not talking about the right or wrong formula, but your gunpowder particles are too rough. Simply put, they are not grinding fine enough."

Cheng Chumo, who lacks modern knowledge, cannot understand what full combustion is and the necessity of full combustion.

For this reason, Li Chengqian had to explain to him the consequences and disadvantages of insufficient burning of gunpowder: "Look at these gunpowder, the particles are almost visible to the naked eye. Such large charcoal particles will definitely not be fully burned.

Alas, let me tell you, if you want to create a fire, is it flammable for small pieces of wood or large pieces of wood? The same is true for gunpowder. When the particles are large, it is a big problem to just ignite it, let alone burn it all in an instant."

He told Cheng Chumo that the calculation formula and concept of converting heat energy into kinetic energy is tantamount to playing the piano with a cow, so Li Chengqian can only use the simplest example to explain the problem of gunpowder particles being too large.

In fact, even without relying on these, Li Chengqian could confirm the question of excessive gunpowder particles. After all, he had seen black gunpowder in later generations, and its delicateness was no less than that of powder.

Look at the things in my hands again, good guys, like damn sand.

"Are you sure it's because of this?" Cheng Chumo was almost crying.

If Li Chengqian's conclusion is correct, the more than 10,000 kilograms of gunpowder that the Firearms Division has accumulated will be useless. This is what he has accumulated for a long time.

However, Cheng Chumo is destined to be disappointed.

"I'm very sure and sure. Maybe you haven't seen what the gunpowder I made before looks like, but what you made now is definitely not good. Reorganize the man to perform the grinding work. Each process is carried out separately. The previous "gunpowder" should be burned. Don't think that you can use it for re-grinding. That thing is very dangerous. If you have a little spark, you will explode."

I originally wanted to get the gunpowder and make some fireworks from Cheng Chumo, but it turned out to be a change to the on-site lecture.

Moreover, the on-site lecture was not over yet. Cheng Chumo, the damn bastard, actually pulled Li Qiancheng to provide on-site guidance. He went to see each production environment, and the time was wasted on the road was as much as half a day.
Chapter completed!