East Palace.

The crown prince had a cloth wrapped around his head, his left eye was large and his right eye was small, and his face was still bruised.

Below, Changsun Chong, Fang Yiai, Gao Cheng, these three people are not much better, they all have blue noses and swollen faces.

As soon as Du He's name was mentioned, several people gritted their teeth with hatred.

Eldest Sun Chong: "When I recover from my injuries, I will fight with Du He endlessly!" ”

Fang Yiai: "Du He is so hateful, it's a pity that we used to treat him as a brother!" ”

Gao Cheng: "Your Highness, we must not let Du He go!" ”

Li Chengqian stood up and said angrily: "This palace doesn't want to punish him heavily, but now that he has been ordered by his father to be grounded in the Laiguo Mansion, we can't, go to the Laiguo Mansion to arrest people!" ”

The eldest grandson's eyes lit up: "Your Highness, I have a way to ensure that Du He's reputation will be ruined!" Moreover, let him not be a colt! ”

The eldest grandson rushed to Li Chengqian's side and whispered.

Li Chengqian heard this and said excitedly: "Okay, okay, I'll leave this matter to you!" ”

"Well, this time, Du He is dead!" The eldest grandson said confidently.

……

The carriage left the west gate of Chang'an City, drove forward for a while, and then stopped.

Du He lifted the curtain and saw a small but very luxurious Taoist temple next to it: Qingfeng Temple.

Du He got out of the carriage, went up the steps, knocked on the door, and a little Taoist priest of seven or eight years old came out to open the door.

"Guests, are you okay? We do not accept donations, nor can we incense! The little Taoist priest said politely.

Du He shook his head: "We don't donate money, and we don't offer incense, let me ask you, Master Yuan Tiangang Yuan, but live here?" ”

The little Taoist priest nodded.

Du He was about to go inside, but was stopped by the little Taoist priest.

"If you want to see my master, you must wait for me to say a good word before you can enter."

Du He saw that it was almost dusk, how could there be this time to rub in, so he waved his hand lightly.

Lu Bu stepped forward in two steps and carried the little Taoist priest on his shoulder.

The master and servant swaggered into the Qingfeng Temple.

Inside is a small courtyard, a large hall, and several rooms.

In this huge Taoist temple, only Yuan Tiangang and the little Taoist priest lived.

As soon as Du He entered the courtyard, he saw smoke coming out of the window of a room on the left, and a violent coughing sound came from inside.

Du He hurriedly walked over and pushed the door open.

In the room, there was a middle-aged man in a gray robe with a thin body, and there was a stove in front of him, with a half-spherical casserole on it, stir-frying something, and the rich and pungent smell came to his face.

Needless to say, this person is Yuan Tiangang.

Yuan Tiangang was also an official in the court in his early years, and even served as an official in the Sui Dynasty, and then suddenly became a Taoist priest.

Hearing the movement behind him, Yuan Tiangang turned around and was immediately furious.

"Who is the thief who dares to come to my Qingfeng to watch the wilderness? Quickly put down my apprentice! Yuan Tiangang rebuked loudly.

Duhe waved his hand behind him.

Lu Bu hurriedly put the little Taoist priest down.

Du He stepped forward and said with a smile: "Master Yuan, let me introduce myself, I am Du He, and I came here today to discuss with you about buying a house!" ”

"Get out, Lao Dao doesn't want to deal with you...... Don't delay me from getting down to business! ”

Yuan Tiangang didn't have the slightest room for negotiation, and pushed Du He out.

Du He glanced behind him and hurriedly asked, "Master Yuan, are you having a problem with alchemy?" ”

Yuan Tiangang was stunned for a moment and stared at Du He: "You...... Actually understand alchemy? ”

Du He shook his head: "I don't understand, but I know you have added a lot of sulfur here, right?" ”

"I don't understand what nonsense you're talking about...... Get out of here, little wind, send off the guests, don't let them in again! ”

Bang.

Yuan Tiangang directly pushed Du He out of the room, and then closed the door.

The little Taoist priest came over: "Please go out, we don't welcome you in Qingfeng Temple!" ”

Du He was happy and shouted: "Lu Bu ......"

As soon as the tall and tall Lu Bu came over, he scared the little Taoist priest and ran away.

Du He was wandering around the courtyard, and suddenly walked outside the room, and saw a lot of alchemy waste residues and raw materials piled up at the door, so he squatted down and studied it.

Among them, there are a few things that Du He is very familiar with.

Charcoal!

Brimstone!

Saltpeter!

In later generations, elementary school students all knew that these three things were the raw materials for the manufacture of black powder.

Du He was interested for a moment, so he took the tools from the side, ground these three things, and then mixed sulfur, saltpeter, and charcoal in a ratio of 1:2:3, these raw materials are all dry, only need to be fully stirred, the simplest black powder, and it is done.

Then, Du He was very playful, found a bamboo tube, filled it with black powder, sealed the hole with wet earth, drilled a hole at the bottom, let some of the black powder in it leak out, and threw it into the burning furnace in the corner not far away.

In the blink of an eye, a shiny white light appeared in the stove, making a rustling sound.

Syllable.

With an explosion, the stove was suddenly extinguished, and all the firewood inside was blown out and scattered all over the ground.

Squeak.

Yuan Tiangang hurriedly ran out and looked at Du He dumbfounded.

The little Taoist priest also ran out and hid behind the willow tree, looking at this side curiously.

Yuan Tiangang stepped forward and looked at Du He in surprise: "What is the movement just now?" Why did my stove explode so well? ”

Du He pointed to the remaining black powder on the stone slab next to him, and said calmly: "This is what exploded just now?" ”

Yuan Tiangang stepped forward and carefully observed the black powder for a long time, but he didn't see any reason, and finally said: "You are talking nonsense, how can this thing explode." ”

"Optimistic about ......"

After Du He finished speaking, he took out a finger of Chinese cigarette and lit it with a lighter, and then put the cigarette butt on the black powder.

簌簌簌.

The gunpowder burst into flames, emitting a white-blue flame.

"This ...... This...... That's right, this is the ingredient of the elixir of immortality...... Hahaha! ”

"Half a month ago, I also refined it when I was alchemizing, but then I didn't know how to refine it, and I kept trying...... I didn't expect it to be refined by you! ”

Yuan Tiangang's face was full of shock!

Bite!

"Congratulations to the host, you got 30 shock points from Yuan Tiangang!"

The shock value is as high as 30, you can imagine how shocked Yuan Tiangang is!

Then, Yuan Tiangang rushed forward, grabbed Du He's sleeve, and said excitedly: "Hurry up, tell me the recipe for refining the raw materials of the elixir of immortality......

Du He looked at the crazy Yuan Tiangang and thought, is there something wrong with this guy's brain?

He looked at each other curiously: "Do you think this thing can be refined into an immortal pill?" ”

"That's right, you're not the first to refine this, and neither am I...... According to historical records, during the Northern Dynasties, some people refined things that burned violently and emitted fairy light, and after seven or four hundred and forty-nine days of refining, they grew into an immortal pill, and after taking it, they could live forever! Yuan Tiangang said yearningly.

Duhe almost fainted.

Uneducated, it's terrible.