Seeing that the three sons of the carpenter Zhu Laosan are so talented, Xiao Chenxuan was extremely excited, he didn't expect that he casually mentioned the idea of the fire gun, Zhu Laosan, the three sons of the carpenter, actually had a study, it was only a few days, this also created an epoch-making fire gun, what made Xiao Chenxuan even more excited was that several people also looked for Taoist priests everywhere to visit, and finally under the guidance of the old Taoist priest of Jingchu Jingguan, they researched the original earth gunpowder to make the gun of this fire gun, Xiao Chenxuan believed that the three brothers were under their own advice, Purifying and improving gunpowder is a matter of minutes.

In this way, the gunpowder is improved, made a simple soil mine, soil grenade, in the siege of the city and the wall, the explosion of the mountain and some specific operations, will be able to play a very critical effect, and can cause a large area of killing, and again, the current Zhang Laosan that old man, the problem of building roads and blowing up mountains and rocks will not be solved?

Xiao Chenxuan, who was born as a senior mechanical engineer, still remembers that the most suitable ratio of black powder is not the long-standing mononitrate, disulfon, and wood charcoal, but the ratio of 10 grams of sulfur, 15 grams of charcoal, and 75 grams of saltpeter.

Xiao Chenxuan repeatedly recalled the gunpowder ratio, and after being sure that he was not mistaken, he began to explain the simple process of making black powder to Zhu Laosan, the third son of a carpenter.

Xiao Chenxuan made a decision at the moment, he must set up a gunpowder and musket workshop as soon as possible, and the heads of these two workshops are these three brothers, and then it is best for him to rob a group of big craftsmen from his cheap Lao Tzu, and let them help him make a new black powder and musket.

Fortunately, when he thought of making fire guns and making ice cubes, he asked An Tingyong and others to look for saltpeter in the entire Chu country, but they never thought that in order to find this saltpeter, several people not only smashed people's latrines, but also ran back and forth in various pharmacies in the entire Chu country all day long. Fortunately, the hard work paid off, and in the end, the few people succeeded in finding the nitrate ore, and dug a basement in their palace to store the mined saltpeter.

And with saltpeter, you can make unlimited ice cubes, not only to supply the amount of ice cubes in the palace, to meet the needs of ice cream shops, but also to sell them at a high price to those high-ranking officials and nobles to cool down this summer, and not only can you make a lot of money, these used saltpeter can also be used back and forth repeatedly, and can also be used to make gunpowder if necessary.

But in order to make black powder, you have to buy a lot of sulfur and charcoal, and before you find a sulfur mine, you can only go to the pharmacy to buy it, but charcoal is easy to solve.

Xiao Chenxuan, who wanted to test the power of black powder, immediately ordered the guards in the palace to go to the Jingchu Pharmacy to buy sulfur, and as soon as the guards left, Xiao Chenxuan went on to explain to the three Zhu Lei brothers the production of this black powder and the uses of black powder, including making explosives, land mines, and soil grenades.

In Xiao Chenxuan's explanation, the three of the Zhu Lei brothers realized that King Ji knew so much, no wonder the prince just said that the three of them studied the fire gun is a thing.

Soon, the guard who bought the sulfur came back panting, but the amount of sulfur he got back was less than ten pounds, and the guard explained, "I had to run a few shops to collect this bit of sulfur." ”

Xiao Chenxuan, who took over the sulfur, began to worry again, sulfur in pharmacies is basically used by Langzhong to treat some simple chilblains and other diseases, the amount of sulfur is naturally not much, he is buying the sulfur inventory in various pharmacies at a high price, I am afraid that it is only a few dozen catties to sweep away the entire Jingchu?

Then he commanded the guards who had brought the brimstone.

"Pass on An Tingyong, let him immediately lead people to search for sulfur in the whole Chu, it is best to find sulfur mines, and after finding them, buy them for this king at any cost."

Although the guards didn't know what their prince was doing with the sulfur mine, they answered and quickly ran to convey their prince's order.

At this time, Xiao Chenhao, who went to the palace to ask for fruit, was very nervous, and chattered to Xiao Chenxuan, how he fooled Emperor Chu, and successfully obtained Emperor Chu's permission, and in the future, his starling brother opened an ice cream shop, and he could have as many fruits as he wanted.

And Xiao Chenxuan, who got the sulfur at this time, was thinking about gunpowder, so what kind of ice cream did he care, after a few simple perfunctory words, he and the three Zhu Lei brothers made gunpowder?

Xiao Chenhao saw that his starling brother was busy tinkering with something he didn't know with a few craftsmen? Ignoring himself, he immediately came to join in the fun.

"Starling, what are you messing with?"

Xiao Chenxuan didn't bother to pay attention to his brother Xiao Chenhao, but looked at the gunpowder that Zhu Lei and the three of them paired, just based on his appearance, Xiao Chenxuan judged that the gunpowder displayed in front of him was very close to the black powder of the later generations, and after smelling the gunpowder pinched by his hand, and convinced that there was not much difference between it and the black powder of the later generations, Xiao Chenxuan immediately said to the three Zhu Lei brothers.

"Let's go and try it briefly, how powerful this gunpowder is."

Xiao Chenxuan remembered that when he was a child, during the New Year's holidays, after setting off firecrackers, he would always collect the guns that did not explode one by one, then wrap the gunpowder in paper, and hit it with a stone to explode.

No, Xiao Chenxuan casually found a piece of rice paper, wrapped a small amount of gunpowder, and immediately ordered the guards to put the paper ball wrapped in gunpowder on a big stone in front of the palace, and then smashed the paper ball with the stone.

According to Xiao Chenxuan's instructions, the guards smashed the stone into the paper ball wrapped in gunpowder, and a loud bang followed.

"Wow, starling, what is this, it can make such a noise, do you want to use this thing to make powerful firecrackers!" Xiao Chenhao was like a child, and he said happily.

Xiao Chenxuan smiled and couldn't help but say: "Don't blame this king for saying that you are about to become a second senior brother, you still don't believe it, can this thing only be made into firecrackers?" ”

When Xiao Chenhao heard this, he was surprised: "Otherwise? The materials for making firecrackers, if you don't make firecrackers, do you want to take them to those Taoist priests for alchemy? Hehe, starling, if you take it to those Taoist priests for alchemy, remember to tell this king, this king wants to know, this group of old Taoist priests, stuff this thing into their Dan furnace, will their Dan furnace be blown up, haha...! ”

Xiao Chenxuan was very speechless, this thing is not only brainless but also black, so he smiled and said: "This thing is very useful, this king will tell you slowly in the future, this king can't do this kind of thing, if you are interested, you can find them to play by yourself." ”

"Ugh." Knowing that his starling brother didn't give this thing to the Taoist priests for alchemy, Xiao Chenhao was instantly lost, and he didn't realize how meaningful this thing was, for him, this thing can be used by those bull-nosed veterans to practice Dan, and it is refreshing to blow up their Dan furnace and waste it!

And the three brothers of Zhu Lei, who are relatively professional, were shocked when they saw King Ji's small attempt at this gunpowder, this power is more than 100 times stronger than the gun made by the three of them, if it is made into the explosives that the prince said, how lethal it must be!