Hearing that his approach was generally correct, Pu Chao was extremely excited. Wang Mi hadn't even said he wanted such a thing, and he was already making preparations.

Wang Mi's guess was correct. Daily essentials such as charcoal and soap locust can be easily found in Jiang's workshop.

Soon, the masters brought in charcoal. They heard that soap locust was needed to make gunpowder, so they took it upon themselves to get a lot of it.

With all the raw materials ready, Wang Mi began to show off his skills.

The so-called method of making gunpowder by laying down fire requires caution and step by step in the entire operation process.

Wang Mi mixed sulfur and saltpeter in a certain proportion. Up to this point, it was no different from Pu Chao's method.

However, when Pu Chao did this, he did not have a clear understanding of proportion and just did it casually.

Therefore, before the next step was carried out, the two raw materials were on the verge of explosion and exploded. No one knew what Pu Chao was thinking next.

Wang Mi looked at the saltpeter purchased by Puchao and found that its color was crystal clear, white and bright, which comforted him.

"General Craftsman, the saltpeter you bought is of very good quality. It is indeed the best!"

"Where is this store? When I have time, I will go and take a look!"

If you want to see it, of course you have to see it.

Saltpeter, also known as sodium nitrate, is something that exists in nature. However, because of its different purity, it directly affects the quality of gunpowder.

Of course, the higher the purity of the saltpeter, the better the quality of the gunpowder produced, which can be called black powder.

Natural saltpeter is generally produced in deep caves, natural rock caves and other places. Seeing this high-quality saltpeter, Wang Mi immediately thought that this store must have a good supply source for the saltpeter purchased by Puchao.

.

Such a source must be controlled by oneself!

How can it live among the people and only be used by Taoist priests to make elixirs? It is really overkill!

Wang Mi mixed the mixed sulfur and saltpeter powder together and put them in a small frying pan. The next step was the more important step.

At his reminder, all the masters' eyes widened.

Be successful!

Wang Mi lit the soap locusts one by one and threw them into the small frying pan. The moment the soap locusts fell, a small crackling explosion sounded immediately and the smoke started to steam.

Pu Chao was so frightened that he immediately covered his mouth and nose and stepped back slightly. Seeing his actions, many masters who had not witnessed the details of the explosion also learned about the specific situation.

It turns out that this is how the loud noise just happened!

However, contrary to the expectations of Pu Chao and many masters, the gunpowder made by Wang Mi, although it was not known what kind of processes would be performed in the future, did not produce as much noise as Pu Chao's.

In fact, it didn't take long for the fire to go out.

Without fire, what use would this thing have?

Although the masters do not yet know the true nature of gunpowder, they have vaguely felt that this so-called new drug must be inseparable from fire.

Fire is the soul of gunpowder!

After the fire was extinguished, Wang Mi picked out the two types of raw and cooked charcoal and mixed them together.

"Everyone, this charcoal is raw or cooked, but when we make gunpowder, we need both."

From the perspective of modern industrial production, making gunpowder is of course very easy, but in ancient times when there were native workshops everywhere, it was definitely not an easy task.

In many links, just a little mistake may lead to complete failure.

It's really troubling.

However, the masters did not take the talk of raw and cooked charcoal seriously, and kept their eyes on Wang Mi.

Wang Mi added the raw and cooked charcoal to the small frying pan, mixed in the mixture of sulfur and saltpeter, and stir-fried repeatedly.

The stir-frying time should be about three rounds.

Because of the ignition of the soap locust, the fire properties of the remaining saltpeter have been greatly reduced.

And don’t underestimate the raw material saponin. Its main purpose is definitely cleaning. In the process of making earth gunpowder, its main function is to support combustion.

However, lighting the soap locust can produce an expansion effect with saltpeter and other substances, allowing the fire properties in the saltpeter to come out.

At this time, the crackling sound produced is also a kind of explosion.

The saltpeter and sulfur mixture that has not been processed in this step can easily cause spontaneous combustion and cannot be stored for a long time.

The stir-fried mixture of sulfur and saltpeter can basically be called gunpowder, but the gunpowder is extremely hot and cannot be used yet.

In a small frying pan, raw and cooked charcoal are burning desperately. This process is called "subduing the fire." Its meaning is to subdue the fire properties of gunpowder.

According to ancient prescriptions handed down by Sun Simiao, at least one-third of the charcoal in the frying pan must be consumed before the fire can be extinguished.

"I used a little too much charcoal. It seems that I should put in less charcoal next time." Wang Mi looked at the heat and murmured.

Although he felt that the time was almost up, he did not dare to put out the fire directly because there was still a lot of charcoal left in the pot.

"I saw a lot, but I didn't dare to remind you." Seeing that the whole operation process was getting more and more delayed, He Mai jumped out and spoke.

This expert in hindsight, now that he has seen a problem, why didn't he say anything just now? Now that the charcoal has been poured in, it is difficult to take it out again.

Wang Mi glanced at him with disdain.

While he was speculating, he had to calm down and not share the common knowledge with people like them. He also had to clearly explain some of the precautions that he could explain so far.

Some of the masters around Wang Mi were jumping for joy and seemed very interested, while others still looked confused.

Wang Mi shook his head. Now it seems that many things cannot be understood by the masters just by explaining them.

"Amai, don't just stand around and make sarcastic remarks."

"I have an errand entrusted to you, and you must do it well."

When He Mai heard that there was an errand, he immediately became energetic.

"Speak quickly, tell me quickly, I promise we can get it done!"

He Mai put his hands on his waist and was full of confidence.

He, Xiao He, has been traveling all over the country for many years. What battles have he not seen? He has been on the battlefield once, and what difficult situations have he not faced?

He is confident that the errands given to him by Wang Mi will definitely not be a problem for him!
Chapter completed!