After listening to Chen Zhe's explanation, Da Qiao was still confused, it seemed that Chen Zhe was right, his plan to deal with wild boars was really inexplicable in one or two sentences.

Since this is the case, she did not insist on continuing to ask, she simply stood aside and watched quietly, watching Chen Zhe and Yan'er burn grass and wood ashes.

Chen Zhe and Yan'er got up early and had already fired several batches of plant ash, which were made of different compositions and were made from different plants on the island.

Yan'er placed these different batches of plant ash separately for easy comparison and observation, some of which were grayish-white, some were light brown, and some were dark black.

After all of them were burned, Chen Zhe pointed to the darkest batch of plant ashes and said, "Yan'er, this combination is correct, let's burn more plant ashes according to the ingredients of this batch of plants." ”

"Okay. Yan'er nodded obediently.

Xiao Qiao next to him was really curious, and couldn't help but ask: "Chen Zhe, what are you burning this black ash for? Are wild boars afraid of this kind of thing?"

Chen Zhe explains: "What I need is not plant ash, but the potassium element in plant ash, and the black plant ash has the highest potassium content, so that I can use plant ash to prepare potassium nitrate." ”

"Potassium element? Potassium nitrate?"

The more Xiao Qiao listened, the more confused he became.

She often failed chemistry when she was in school, so she didn't have much of an idea of the chemical.

On the contrary, Da Qiao still had some memory of chemical knowledge, and when he heard Chen Zhe's description, he immediately suddenly realized: "I know, Chen Zhe, you want to make nitrate from plant ash." ”

"Yes. Chen Zhe nodded, "That's what it means." ”

"System...... "Xiao Qiao tilted his head to look at his sister and asked, "Sister, what do you mean by making nitrate from plant ash?"

"Nitrate is potassium nitrate, also commonly known as 'saltpeter', which is a chemical raw material that can be made from plant ash.

Wood ash contains potassium carbonate and calcium nitrate, and after making a hot solution, potassium carbonate will react with calcium nitrate to form potassium nitrate, that is, 'saltpeter', which is the theoretical process of making nitrate from plant ash. ”

Hearing Da Qiao's analysis, Xiao Qiao was still at a loss.

Chen Zhe and Yan'er were impressed by Da Qiao.

Yan'er praised from the bottom of her heart: "Sister Da Qiao, I didn't expect you to be so good at chemistry. ”

Da Qiao said shyly: "Because my memory is not bad, I can barely remember ......"

Chen Zhe smiled and said, "Mengyun, since you know so much about the process of making nitrate from plant ash, then please ask you to make nitrate." Yan'er will give you the burned plant ash in a while, and then you will use the plant ash to prepare a hot solution and filter out the saltpeter. ”

Da Qiao nodded happily and said, "Of course it's no problem." ”

Then he asked, "But Chen Zhe, you have to tell me first what you are doing with plant ash to make nitrate? Is this your plan to deal with wild boars?"

"Of course. Chen Zhe nodded, then pointed to a clay pot by the wall of the cabin and said, "You can see what is there." ”

"Good. Big Joe answered, walked to the side of the cabin, and opened the clay pot.

Then she saw several yellow-colored stones.

"This is ......" Da Qiao was puzzled for a while, and then suddenly realized, "This is sulfur ore?"

"That's right. Chen Zhe replied with a smile, "This is natural sulfur ore, yesterday Yan'er and I found that there is a volcano on this island, and sulfur ore is a special product of volcanoes, and the sulfur in the clay pot is the sulfur I dug from the side of the volcano." ”

Hearing this, Da Qiao finally understood what Chen Zhe's plan was.

At this moment, she finally realized that the mystery that haunted her heart was completely solved.

And after figuring out Chen Zhe's plan, she couldn't help laughing: "Haha...... Chen Zhe, there is really you, it seems that you are right, you have no problem dealing with wild boars. ”

Xiao Qiao next to him frowned when he heard this, and hurriedly asked, "Sister, what are you talking about? Can you explain it plainly? What is Chen Zhe's plan to deal with wild boars? Why is there no problem?"

Da Qiao smiled, pointed to the sulfur and said: "There is sulfur here, and the ashes of plants and trees can be refined into saltpeter, with these two clues, can't you guess Chen Zhe's plan?"

Xiao Qiao said speechlessly: "Sister, you know that I am not good at chemistry and humiliate me, you hate it!"

Da Qiao smiled and rubbed Xiao Qiao's head, and said: "Sulfur, saltpeter and charcoal, these three substances are mixed together to be black powder, silly girl, Chen Zhe is making black powder."

When he makes the black powder, let the black wild boar have rough skin and thick flesh, can it carry the gunpowder? As long as the amount is enough, hundreds of catties of wild boar can be sent to the sky!"

After hearing this, Xiao Qiao understood what Chen Zhe's plan was.

No wonder he didn't panic even if he injured his foot, it turned out that he still had black powder as a weapon of mass destruction!

Before, the jungler relied on the body, but now the jungler relies on technology!

Chen Zhe is simply invincible!

"Wow, Chen Zhe, your plan is very good...... Xiao Qiao couldn't help but admire, "Are we going to have wild boar meat to eat right away?"

At this time, Xiao Qiao's fear of wild boars was also eliminated, after all, the sense of security brought by gunpowder was too sufficient.

Chen Zhe smiled and nodded: "Yes, when this black wild boar is blown up, we will have pork to eat, now that pork is so expensive, if this wild boar is sold on the market, it will be worth a lot of money." ”

When Xiao Qiao heard this, he smiled brightly and said, "Great, I love pork the most!"

Da Qiao glanced at her and complained dotingly: "You snack." ”

......

After figuring out the situation, Yan'er and Da Qiao began to get busy, and Xiao Qiao couldn't help in making nitrate, so he went to make breakfast for everyone.

Yan'er picked the dead branches and leaves according to the recorded recipe, and then burned the plant remains into plant ash, while Da Qiao dissolved the plant ash into a hot solution, from which saltpeter crystals were precipitated.

While everyone was busy, Chen Zhe quietly went to the side to upgrade the sulfur brought down from the mountain, the natural sulfur stone is not of high purity, and it is mixed with some impurities, which are very dangerous when making black powder, and it is very likely to cause an explosion.

However, with the help of the item upgrade system, Chen Zhe could directly improve the purity of sulfur, and after several upgrades, a batch of extremely high purity sulfur was born.

After a busy day, Da Qiao also lived up to expectations and refined a batch of saltpeter, but the saltpeter obtained by making nitrate from plant ash was also impure, and it was also mixed with some sodium chloride crystals.

Purifying saltpeter still required Chen Zhe's item upgrade system, which he completed while the others were resting.

As for charcoal, this is simply a low-hanging fruit for Chen Zhe, who lights a bonfire every day.

So Chen Zhe finally gathered together sulfur, saltpeter and charcoal, and as long as he matched them in the right proportions, he got black powder.

He briefly estimated the amount of black powder in his hand, and it shouldn't be a problem to send the six or seven hundred catties of wild boar to the sky......