Dawn.

Chen Yun and Zhang Qian, who took turns to release the wind in the middle of the night, first inquired outside several times.

After making sure that Lin Feiyun's demon girl was not there, the two of them put on a horse talisman and left the broken temple and ran wildly.

Maybe Lin Feiyun was seriously injured and couldn't clean up Chen Yun and Zhang Qian for the time being, but they were also very peaceful on the way, except for some weak legs that were chased by a wild boar when crossing the mountains and forests, nothing too dangerous happened.

After half a day of traveling, Chen Yun and Zhang Qian crossed five hundred miles away and successfully arrived at another city thousands of miles away from Xigou City.

Machi City.

After being inspected by the garrison guarding the city, the two entered the city.

Both sides are densely packed with shops.

There are a wide variety of products in the store, such as cloth clothes stores, rouge gouache, etc., which are dazzling at a glance.

It may be close to noon, but there are not many hawkers and pedestrians in the city, only the restaurants are full of customers.

On the bluestone street, the two were walking.

Zhang Qian asked curiously, "Senior Brother Chen, what exactly do you want to make to ambush and kill the demon girl?" Tell me about it. ”

Chen Yun blinked and said, "Beware that the partition wall has ears, it is inconvenient to say it for the time being." ”

Zhang Qian said helplessly: "Okay." ”

Chen Yun saw a beggar on the side of the road, and casually threw a tael of silver over, which attracted the beggar to thank him again and again.

After smiling and bowing his head, he continued to say to Zhang Qian: "Senior Brother Zhang, I will give you a task later. ”

Zhang Qian said, "You say." ”

Chen Yun pointed to the thatched house not far away, "Do you see the thatched house over there?" ”

Zhang Qian nodded, "I see." ”

Chen Yun blinked, "You should remember that there are a lot of white powdery things on the walls around the thatched house, right?" ”

"Fire gun, you say? Of course I do. Zhang Qian asked puzzledly, "Why did you mention this?" ”

Chen Yun still didn't explain, "You try to scrape as much fire as you can from the walls of the thatched house, the more the better." ”

Although he didn't know what Chen Yun was going to do, Zhang Qian still obeyed: "Okay." ”

After discussing, the two found a restaurant to eat.

During this period, I have been chatting quietly about how to clean up Lin Feiyun.

After a few moments, finish your meal.

The two agreed to meet at the inn and separated.

Chen Yun asked people everywhere, and finally came to a grocery store called "Zhao Ji".

When I went in, there was a bearded shopkeeper inside.

He sat listlessly behind the counter, with his head down, not knowing what he was doing, as if he hadn't noticed any guests coming in.

Chen Yun took the initiative to ask: "Shopkeeper, do you have Kunlun Huang for alchemy in your store to sell?" ”

Kunlun yellow is lumpy sulfur.

"You......" The shopkeeper looked up and saw that it was a person, so he quickly stood up and said with a smile: "Ouch, it's the Taoist." ”

Chen Yun walked to the counter and said, "Is there still charcoal in the store?" It is best to use charcoal made of willow wood. ”

"Yes, all of them." The shopkeeper said politely: "How much do you want?" ”

Chen Yun thought that he might have to refine, so he simply asked for more, "Kunlun Huang prepared twenty catties for me and thirty catties of charcoal." ”

The shopkeeper said: "Okay, the charcoal is a total of 400 Wen, Kunlun Huang is more expensive, 800 Wen, and the two are a total of 1,200 Wen." ”

The price of charcoal is about the same as I remember.

On the contrary, the price of sulfur is a little expensive.

Chen Yun remembered that during the Ming Dynasty, the transportation of sulfur was eight cents a catty.

In this era similar to the Tang Dynasty, the craft may not be so developed, so a pound of sulfur costs forty wen, which is indeed very expensive.

However, this price was within the affordable range, and Chen Yun paid quickly.

As soon as he finished paying, Chen Yun asked the gods, "Shopkeeper, do you have any fire to sell?" ”

The shopkeeper was counting the money, "Yes, how much do you want?" ”

Chen Yun sweated for a moment, thinking that the fire and nitrate had not been sold, so he asked Zhang Qian to drill the toilet to collect it, but he didn't expect it to be sold.

Subsequently, he bought more than 100 catties of fire nitrate.

In the end, Chen Yun took advantage of the shopkeeper's preparation of goods to find a carpenter and let him make a wooden barrel.

……

In the inn.

After Chen Yun opened a guest room, he discussed with the shopkeeper, gave him some silver taels so that he could borrow the kitchen, and spent money to hire a servant to light the fire for himself.

He first cracked the sulfur into pieces, then put it in a pot and heated it.

Chen Yun observed from time to time.

After seeing the sulfur melt, he kept stirring with a wooden stick, which was conducive to the vaporization and evaporation of some impurities.

Wait until this part is almost over.

He quickly took out the sulfur liquid and put it into the still that Wang Zaixi had made for himself.

Heat the still.

Wait until the sulfur boils inside.

The sulphur gas travels along the pipe to a long-prepared tank at the other end, where it gradually cools and solidifies.

The sulfur has just been purified.

Zhang Qian walked in from outside, "Senior Brother Chen, the shopkeeper said you were here." ”

Before Chen Yun could turn around, he smelled a foul smell spreading from behind.

Not surprisingly, Zhang Qian did go to the thatched house to collect fire.

Chen Yungang turned around and apologized.

Zhang Qian's eyes widened and he looked at the large pile of fire and nitrate in the wooden basin and said speechlessly: "Senior Brother Chen, where did you get this fire nitrate?" I only collected a pound after drilling the thatched house for a long time, you are afraid that there are hundreds of pounds, right? ”

"Ahem." Chen Yun was embarrassed, "I just asked for a grocery store, and they sell it." ”

Zhang Qian: "......"

He stared at Chen Yun with a resentful expression, "Do you know how smelly the thatched house is?" ”

Of course, Chen Yun knew how smelly it was, and the smell of the ancient thatched house......

Well, it's almost up to the top.

He hurriedly comforted Zhang Qian for a few words, and then began to purify the saltpeter.

Purifying saltpeter is relatively simple, Chen Yun uses the recrystallization method, that is, the saltpeter is crushed into powder, and then dissolved in enough hot water, and then cooled slowly, in the cooling process, the saltpeter will gradually crystallize, then the crystallization is separated by filtration, and washed with cold water.

Chen Yun repeated this process several times and finally obtained high-purity saltpeter.

After doing this, he dries the saltpeter.

……

Two days later, at noon.

Chen Yun's ultimate weapon has finally been crafted.

In the past two days, because of the effectiveness of Zhu Guo's peel, he was able to practice for nine small weeks every night, refining a total of one hundred and sixty-two True Qi.

You must know that Chen Yun's cultivation has not broken through to the eighth grade mage for nearly a month.

And now, three nights are worth three months of cultivation time.

This made him quite emotional, sure enough, cultivation requires heavenly and earthly treasures.

The most important thing is that this is the peel of the vermilion.

If it is a whole vermilion fruit, the potency will definitely be even stronger.

Chen Yun almost couldn't help but want to eat Zhu Guo several times.

But he believed that refining and refining qi soup had a greater effect than simply eating Zhu Guo, so he couldn't help but not eat it.

It's a pity that after three days of refining, the potency of Zhu Guo's peel has gone.

in the guest room.

The two of them were crouching in front of the tub and watching.

Inside the wooden basin, there is a large pile of black grains in the shape of yellow rice.

Zhang Qian looked at these black particles with a curious face: "Senior Brother Chen, what are these things?" ”

These are gunpowders.

Or wheat gunpowder to be exact.

Chen Yun looked at these grains of gunpowder and felt quite accomplished in his heart.

Ancient gunpowder is not without it.

It's just that gunpowder in ancient times burned slowly and had low energy.

He was afraid that he would not be able to blow Lin Feiyun to death at once, so he specially made a high-end version of the "wheat grain" gunpowder.

Wheat gunpowder burns twice as efficiently as powder, just as a twig burns more easily than sawdust.

In addition, the power of wheat powder is far greater than that of ordinary black powder.

Of course, this is not a killer feature.

Chen Yun's real killer weapon was to make wheat gunpowder into explosive barrels and blow up Lin Feiyun's demon girl.

It can be said that this is a truly cross-era weapon.

The corners of his mouth hooked slightly, "This, it's gunpowder." ”

Zhang Qian had been in the preaching temple for five years, so he naturally knew what gunpowder was.

After all, gunpowder is a thing made up by Taoist alchemists.

He wondered, "Is this gunpowder?" Don't lie to me, isn't gunpowder black like flour? ”

Chen Yun didn't bother to explain to him, "You'll know when you go back, help me put these gunpowder into the barrel first." ”

Zhang Qian blinked and said, "It's really gunpowder?" Can I light it and try it? ”

Chen Yun was startled, "Senior Brother Zhang, you want to die, I don't want to die yet." ”

Zhang Qian said a little disappreciatively: "If the gunpowder ignites, it will stab a spark for a while, what is there to be afraid of?" ”

Chen Yun rolled his eyes and said, "The power of my gunpowder is much more powerful than the gunpowder you know. ”

He decided to explain to Zhang Qian, so as not to mess with this guy's brain, don't wait if he is really too curious, light the wheat gunpowder and try it, "My kind of gunpowder, if it is 400 catties, can blow up half of the street!" ”

Zhang Qian was stunned when he heard it: "Huh! Four hundred pounds to blow up half of the street? So ferocious? ”

Chen Yun snorted, "This wooden barrel can only hold about twenty catties, and the power may be a little smaller, but it should be more than enough to kill Lin Feiyun's demon girl, so when we use this thing, we must keep a long enough distance from that demon girl." ”

Wheat gunpowder is about three-fifths as powerful as TNT high explosives.

In other words, the power of these twenty catties of gunpowder is about equivalent to twelve catties of TNT high explosives.

Chen Yun's only pity is that he doesn't have time to refine glycerin.

Otherwise, he could make a glycerin dynamite, which would be even more powerful.

As far as this powder keg is concerned, Chen Yun feels that blowing up a building can be said to be a breeze.

Zhang Qianshen thought and said: "It's to be far away, I don't want to die young." ”

As he spoke, he looked at Chen Yun with admiration, "Senior Brother Chen, I really don't know how your head grows, this thing can be invented?" ”

Chen Yun laughed, "Okay, don't be poor, hurry up and put the gunpowder into the barrel, see if I don't blow up Lin Feiyun's demon girl!" ”

Zhang Qian clenched his fists fiercely and waved, "I must blow her up!" ”

yes, you must kill that demon girl.

Although Chen Yun is peaceful, since others want to kill him, he is sorry, he is not a vegetarian, and he will definitely not sit still.

Want to kill me?

You can give it a try!

Chen Yun moved the killing intent for the first time, and he was still the kind that never died, Lin Feiyun didn't die, he couldn't sleep well!

(End of chapter)