"Young Master, Young Master, this seems to be a gate sealed with a magic array. Pen & Fun & Pavilion www.biquge.info" Miao Ke finished cleaning up the surrounding clutter, followed the traces of the pattern on the ground and looked at it carefully, and said to Duan Xiaofei.

"You mean, you can open the door through this magic array, and there is a basement in the house?" Duan Xiaofei said.

"It's just...... It's possible. "Miao Ke is not very sure.

"But how is the door going to be opened?" Duan Xiaofei looked at the patterns on the ground, a little embarrassed.

"I don't know how the magic array is activated, I can only guess that it should be related to fire. Miao Ke pursed his lips and looked at the notes left by his teacher.

"Is it ......?"

An idea suddenly popped up in Duan Xiaofei's heart, and he dipped his fingers in the black powder left by the depression of the pattern again, put it to his nose and smelled it.

"Miaoke! When you were packing up your things just now, I saw some jars with materials, where did you put them?" Duan Xiaofei asked.

"I just put it in the cupboard, and I'm going to take it out. Miao Ke immediately took out a few sealed jars from the cabinet.

"Charcoal!"

In the largest jar, there was a whole jar of pitch-black charcoal, Duan Xiaofei took one out of it, although it was a little damp, but fortunately, no matter how long it was stored, it would not deteriorate.

"This yellow powder must be sulfur. Duan Xiaofei picked up a slightly smaller, transparent jar again.

"Young Master, do you also know these materials?" Miao Ke heard Duan Xiaofei say the word sulfur, and said in surprise.

"Of course I know, although your young master and I were not top students in high school back then, I still know these basic knowledge. Duan Xiaofei smiled proudly.

Duan Xiaofei put aside the jar containing charcoal and sulfur, searched for the remaining bottles and jars, and turned out a jar labeled "Fire Crystal".

"Haha! It's all right!" Duan Xiaofei put the other jars back in place and placed the three jars containing charcoal, sulfur, and fire quartz on the table in turn.

"Young Master, what are you going to do here?" Miao Ke didn't understand, she said, "You don't want to concoct the black powder that the teacher made back then!"

"That's right. Duan Xiaofei snapped his fingers and said, "Moreover, I'm going to give this black fan a name." ”

"What's the name?"

"Gunpowder!"

"Gunpowder?" Miao Ke thought for a moment, and then added, "But the teacher didn't succeed in making gunpowder back then, and only theoretically proved his existence." ”

Miao Ke handed Duan Xiaofei a notebook, the yellowed paper on it recorded the experimental data of Teacher Miao Ke that year, according to the records above, he not only used charcoal, sulfur, and fire crystal, but also tried dozens of magic herbs, but unfortunately they were far from the theoretical calculation values.

In the records, the black powder produced either burned too violently and was completely uncontrollable, or only small flames were generated.

Although the same effect can be achieved by adding magic materials such as Fire Dragon Grass and Burst Orchid, this defeats his original intention of creating black powder, and theoretically speaking, there is no need to add any magic materials to it.

"Miaoke, your teacher probably didn't try to figure out the right ratio. Duan Xiaofei said confidently, "You come to help me, and we will fulfill your teacher's wish." ”

"Young Master, you...... Have you also studied magic potions?" Miao Ke said with a wink as he looked at Duan Xiaofei.

"Well, as you know, I've lived in another world for nearly twenty years, and it's all from other world experiences. Duan Xiaofei rolled up his sleeves and prepared to do a big job.

"Okay!

It can be seen that Duan Xiaofei is confident, and he also moved the things that the mortar and balance needed to be used on the table.

"One sulfur, two nitrate and three charcoal, although this mantra is very widespread, but the one, two, three in this refers to the amount of substance, so it is not possible to configure explosives in this ratio. ”

Duan Xiaofei said to himself: "If I remember correctly, the mass ratio of the three flavor ingredients in black powder in ancient times should be 2:3:15. ”

"Young Master, you...... What are you talking about?" Miao Ke was confused when she heard it, although as a magician, he was no stranger to the configuration of magic potions, but what Duan Xiaofei said about "one sulfur, two nitrate and three charcoal", "the amount of matter", and "black powder", she had never heard of them.

"Anyway, Miaoko, get me 75 grams of charcoal, but you have to dry the charcoal first, and you should be able to do it with your magic. ”

"Yes, you can. Miao Ke nodded in agreement.

Then take out 10 grams of sulfur. ”

"Okay young master. ”

"Another 15 grams of potassium nitrate, yes, I'm talking about this white thing, well, you call him igneous crystal. ”

The scales that Mr. Miao Ke had left in the room carefully weighed the three ingredients and placed them on three plates.

"Miaoke, is there a wooden mortar here?" Duan Xiaofei asked.

"There should be, I'll look for it. Miao Ke hurriedly opened the cabinet.

"We're making explosives, not metal mortars. ”

After all, Miao Ke's teacher is an old magician who has been focusing on magic theory and magic potions for decades, and the wooden mortar must be prepared.

Now, under Duan Xiaofei's instructions, Miao Ke grinded the three raw materials into powder separately, and finally poured them together for mixing, and only after confirming that the powder had been completely mixed did he pour out some black powder in the mortar.

Duan Xiaofei put some black powder in the center of a piece of paper, he gently put the paper on the ground, and said to Miao Ke: "Miao Ke, you try to light this piece of paper, pay attention to only one corner." ”

Mukko chanted a spell, and a small flame rose in her fingertips, and then she used it to light the paper.

Duan Xiaofei squatted on the ground, quietly watching the flames spread on the paper, and the blackened traces gradually approached the position of the black powder......

It's coming, it's coming......

Duan Xiaofei held his breath and stared at the cloud of black powder.

Hiss -

Just as the flame touched the black powder, a flame suddenly rose from the paper, and the white smoke rose from the ground, and the smell of burning gunpowder filled the room.

"It's a success!" Duan Xiaofei slapped his palm and said.

"This ...... You...... How did you do that!" Miao Ke said as he waited for the flames to burn out, gently touching the remaining black slag.

"Hehe, it's not just magic in this world that has great power, just a small ball of gunpowder can ignite such a big flame in an instant, what if it's ten, hundred, or thousand times the gunpowder?" Duan Xiaofei pointed to the mortar and balance on the table, and said, "Moreover, any civilian can do these things." ”

Seeing that Miao Ke was distracted by the more gunpowder on the table, Duan Xiaofei patted Miao Ke's head lightly and said, "Hurry up and try your teacher's magic array, I think that the key to the magic array is gunpowder, and your teacher has successfully prepared gunpowder, but he hasn't recorded it." ”

"Well, let's try it!"

Duan Xiaofei also estimated the size of the pattern on the ground to concoct gunpowder at the beginning, so after the two of them poured out all the gunpowder in the mortar, they also happened to fill all the grooves.

"Miaoke, it's up to you!"

Duan Xiaofei said to Miao Ke, and Miao Ke nodded slightly, and at her fingertips, a small fireball technique the size of an egg condensed, and with a flick of her wrist, the fireball landed on the fuse reserved in advance.

Whew――

At the same time as the fireball fell, the firelight suddenly lit up in the room, and the flash made Duan Xiaofei's eyes lose concentration for a moment, and then, a thick smoke rose and filled the entire room.

Click, click......

At this time, several machine brackets came, followed by the sound of stone slabs rubbing against each other, and when the smoke cleared, a staircase leading to the underground appeared in front of Duan Xiaofei.

"You are the bloodline of the Demon King of the Demon Race, and it goes without saying that you have magical talents, but you were sent to a different world without magic when you were a child, and you were only recently summoned back, and there is no one more suitable than you who have never received normal magic training but have extraordinary magical talents. ”