Yuan Tiangang told the truth, before the Tang Dynasty, there were alchemy Taoist priests who inadvertently refined black powder during alchemy, which was recorded as a fast-burning thing, but out of selfishness, these people did not record their own method of refining black powder, otherwise, Yuan Tiangang would not have to test it again and again.

Seeing that what he had tried for half a month and couldn't get it was actually made by a teenager, Yuan Tiangang was excited in his heart.

I saw Lao Dao grab Du He's sleeve and say reluctantly: "Du He...... It turns out that you are Du Xiang's second son, today, if you don't tell me the method of refining the raw materials of this elixir, I won't let you go. ”

Seeing this, Lu Bu stepped forward to teach the old man a lesson.

Du He waved his hand and asked Lu Bu to go to the door to guard first.

Du He sat down on the stone next to him, smiled, and said, "Master Yuan, actually, I came to you today precisely for you to stay in the courtyard next to my Laiguo Mansion!" ”

Yuan Tiangang hurriedly shook his head: "That's not good, that's my Yuan family's old mansion, I can't sell it to you if I say anything, otherwise my Yuan family will have no foundation." ”

Du He flicked his sleeves: "You are an old man, you have no children and no daughters, you are alone, what else are you talking about the foundation of the Yuan family, you really amused me to death." ”

"You ......"

The Yuan family's face turned red, but they couldn't say a word.

Seeing this, Du He got up and said, "It seems that Master Yuan doesn't want to sell the yard, so forget it, let's talk about it another day!" ”

With that, Duhe walked out.

Yuan Tiangang was anxious when he saw it, and hurriedly rushed forward to stop him, and said anxiously: "Okay, the house can be sold to you, but you must tell me the method of refining the raw materials of the Immortal Pill." ”

The corner of Du He's mouth suddenly smiled and nodded: "Yes!" However, let's get the house done first. ”

"You kid...... I'm still worried that my old Yuan won't be able to lie, come, I'll write you a note. ”

Yuan Tiangang was more anxious than Du He, and hurriedly asked the little Taoist Qingfeng to bring paper and pencils, and wrote a note for selling the house, and agreed to sell it at a price of 500 taels.

The old mansion of the Yuan family, Du He has also been to see, the area is not small, the building is complete, and the value is more than 1,000 taels.

Who knows, Yuan Tiangang said a second ago that it was the old house of the Yuan family, the foundation of the Yuan family, and in a blink of an eye, it was sold at a low price.

This old way is alchemy and madness, right?

Du He also pressed his handprint and put away the note: "Early tomorrow morning, I will have someone send 500 taels of silver." ”

Yuan Tiangang waved his hand indifferently: "It's okay, it's okay, let's talk about this alchemy ...... first."

Before he finished speaking, he was interrupted by Du He: "You have to get it, you stop first, this thing, called black powder, is not the raw material of alchemy, not only can you not live forever if you eat it, maybe you will die." ”

"Don't worry about it so much, just tell me the recipe directly." Yuan Tiangang couldn't listen to a word at all.

Du He was helpless, so he picked up a piece of paper and wrote down the recipe for black powder.

To put it simply, it is one sulfur, two nitrate and three charcoal, and elementary school students know that, of course, this is the weight ratio, not the volume ratio. For example, the primitive cannon made by Du He just now, because there is no weighing tool, it is only configured by feeling, so the effect of the explosion is not very ideal.

Yuan Tiangang put away the recipe as if he had obtained a treasure, and then began to rush people: "Seeing that it is getting late, Du Gongzi should please go back quickly, otherwise the city gate will be closed and the curfew will begin." ”

Du He was speechless.

This guy was very enthusiastic a moment ago, but after getting the formula, he began to turn his face and not recognize people.

Helpless, he could only take Lu Bu back to his house quickly.

……

Seeing that the sun had set, darkness gradually swallowed the earth.

At the back door of the Lai Guo Mansion, several figures appeared.

There were five people in total, all dressed in black shorts and hats.

The leader is the eldest grandson Chong.

The eldest grandson said to the four of his subordinates: "Open the back door later, you can go in with me to arrest people, Du He's room is directly opposite this back door, Du Mansion I am familiar with, at this time there is no one at all, after catching someone, immediately faint and take away!" It must be done quietly and never discovered. ”

A man in black asked curiously, "Young Master, what about after taking people away?" ”

The eldest grandson laughed obscenely: "Hehe...... When he caught Du He, he stripped him naked and threw him on the street, and when the Wuhou who patrolled the city found out, tomorrow, he would be famous in Chang'an City. ”

"Hahaha......"

Several people laughed obscenely.

The eldest grandson Chong used to have a close relationship with Du He, so he was very familiar with Du Fu, otherwise he would not dare to quietly bring people to arrest people.

This time, Changsun Chong thought that he was foolproof, as long as he could do this thing beautifully, he would be able to make a great contribution in front of the prince.

Several people got carried away, but they didn't notice that a fist suddenly appeared behind Changsun Chong and smashed on the back of Changsun Chong's head.

Bang.

The eldest grandson rolled his eyes and fainted.

Before the four men in black could react, they were knocked unconscious with a crackle.

In the dim light, I saw Lu Bu easily put the five people in order, and then walked in front of Du He and said, "Young Master, it has been solved." No one found out that we did it. ”

Du He stepped forward, looked at Changsun Chong, and couldn't help kicking: "Is it a coincidence?" dared to come to the Laiguo Mansion to arrest people, and wanted me to be ruined. ”

Lu Bu asked, "Young Master, what should I do?" ”

Du He's eyes rolled, and he suddenly smiled: "Since Eldest Sun Chong wants to be famous, then I can't help but be satisfied with his wrong......"

As he spoke, Du He leaned into Lu Bu's ear and whispered to make arrangements.

Lu Bu nodded.

Afterwards, Du He returned to the mansion alone, had dinner, and then went back to his room.

At the moment, Lu Bu came to the window, knocked on the window, and whispered, "Young master, it's all done." ”

Du He nodded in satisfaction, blew out the candle, and went to bed.

"The stage is set up, the actors are in place, and we are waiting for a good show tomorrow......"

Du He muttered to himself.

Nothing was said all night.

……

The next day, the fifth watch.

The watchman carried a lantern and walked on the street near Pingkangfang.

Not far away is the majestic and towering imperial city, which is brilliantly lit.

Suddenly, the husband stared at the wall in front of him.

I saw that there were white flowers lying there, and I didn't know what it was.

"Could it be that the slaughtered sheep of which family has fallen?"

The husband stepped forward curiously.

I hadn't taken a few steps forward, when suddenly I screamed and ran away.

For, instead of the slaughtered sheep on the ground, there were several men who had been stripped naked, five in all, naked and embracing each other.

In a short time, the Marquis of Wu, who was patrolling the city, arrived.

There are a large number of martial marquis in Chang'an City, who are responsible for patrolling the city after the curfew, but this is under the imperial city, so the martial marquis generally do not patrol here.