Xu Tian's reaction made Cao Pi a little puzzled.

"Mr. Xu knows him?!"

Xu Tian suppressed the consternation in his heart and said with some embarrassment:

"Oh! I met by chance before, I saw him once, but I didn't expect him to be an alchemist. ”

Cao Pi didn't care, and nodded slightly at Situ Yun who came over.

"This Mr. Xu has something I want to ask you for help, and I have to work hard!"

Situ Yun still looked a little absent-minded, and glanced at Xu Tian casually, feeling a little familiar. It seems that I have seen it somewhere, but I can't remember it at this time, and I don't have the heart to think about it, so I bowed my hand to Xu Tianluo.

"Sir, please tell me something!"

"I need a material, saltpeter. It is said that it is usually refined by an alchemist, so I wanted to visit Mr. and see if I could help! ”

Xu Tian returned the salute with a fist and said with a smile.

Situ Yun frowned, and said secretly in his heart:

"What does this person want saltpeter to do, does he also want to alchemy?!"

But this was just a momentary thought, and Situ Yun only had how to save his mother and that shocking plan in his heart at this time. In any case, even if you die. I also want to save my mother.

Immediately, Situ Yun slowly spoke:

"It's easy to say, in three days, just come to me and get it. In the lower body bears the heavy responsibility of alchemy for the prime minister, I won't stay long, farewell!! ”

After saying that, he turned and left...

Cao Pi smiled a little embarrassedly, looked at Xu Tian and said:

"This master is like that, straight to the point. Perhaps, this is the nature of these strange people! ”

Xu Tian smiled and shook his head.

"If Mr. Xu has any needs in the future, please come to me, I hope Mr. will not see you!"

Cao Pi smiled and said very sincerely. The meaning of its wooing is overflowing...

Returning to his room again, Xu Tian fell into deep contemplation.

This Situ Yun is the one he met in front of Wang Ling's mansion that day, and he is the one who conspired with Wang Ling in the backyard to carry out some kind of assassination, and he is the alchemist who gave Cao Cao alchemy. And the people they are going to kill...

Xu Tian took a deep breath, this matter is too big, if it is really Cao Cao who Wang Ling wants to kill, if he succeeds, then I don't know how many people will be purged. It is very clear that with Wang Ling's attitude towards himself. Then I will be one of them.

Xu Tianmeng got up and wanted to go to tell him immediately. Expose Wang Ling. Immediately, he sat down slowly, and said secretly in his heart:

"No, if I go to expose Wang Ling, I have no actual evidence. If he slaps a rake, he says that I deliberately hindered Cao Cao's treatment. I can't explain that..."

Xu Tian's brows furrowed deeply, like this. He will be in a dilemma on both sides, or he will not alarm Wang Ling to stop this matter, it will be extremely difficult for Xu Tian. He had to keep tapping his fingers on the table...

Since Situ Yun is an alchemist, he wants to get rid of Cao Cao. The best thing to do is to poison the medicine. So the key is the elixir!!

Xu Tian shook his fingers, and his eyes fell on the ancient book he had read on the table. Eyes flashing...

Three days later, Xu Tian came to Cao Pi's mansion as agreed. Under the guidance of the servants, he went to the Dan room specially built for Situ Yun.

It was a huge room, and the room was empty. Only there was a huge Dan furnace in the middle of the room, and at this moment, Situ Yun was sitting cross-legged beside the Dan furnace, putting some unknown herbs into the furnace in turn. The green smoke of the Dan furnace made the whole room in a haze.

Xu Tian gently stepped into the room and stood aside to watch carefully.

After a moment, Situ Yun got up. casually glanced at Xu Tian, who was standing aside, and slowly spoke:

"Mr. Xu is very punctual!"

Xu Tian smiled slightly and looked at the smoky Dan furnace.

"Is this an elixir refined for the prime minister?! It doesn't look like an ordinary medicine! ”

Situ Yun frowned slightly, remembering what Xu Tian wanted. After a moment of silence, he still spoke:

"Mr. Xu also understands alchemy?!"

"No, no, no, I'm just curious. I don't know anything about alchemy! ”

Xu Tian waved his hand and replied.

Situ Yun didn't ask any further, turned around and walked to the house on the side.

"Mr. Xu, please wait a moment!!"

Xu Tian looked at Situ Yun who entered the house and groaned slightly. Turning around and coming to the Dan furnace, there were only some remnants of fire left under the Dan furnace at the moment. It seemed that this elixir was nearing its end, looking at the burning carbon fire. Xu Tian looked at the sulfur in his arms, and a sneer appeared on the corner of his mouth.

After a moment, Situ Yun walked out of the room. The mobile phone held a wooden box and came to Xu Tian's side, and Situ Yun slowly opened the wooden box.

I saw that there were two transparent crystal-like objects in it, which were crystal clear and very beautiful.

"This is saltpeter, Mr. Xu should be careful to keep it, don't get close to the source of fire!"

Xu Tian turned the wooden box, clenched his fists and said:

"Thank you!"

The moment he turned around, Xu Tian quickly picked up a piece of sulfur and put it together with the sulfur in his arms, and wrapped it in several layers of very burn-resistant kraft paper. I held it in my hand without a trace.

Xu Tian looked back at Situ Yun and said with some meaning:

"Mr. Situ is an alchemist, and he can be regarded as a kind of doctor. As the saying goes, saving a life is better than building a seventh-level floating slaughter, which is the duty of a physician. But whether it's a doctor or an alchemist, it's easy to save people. If you want to kill someone, I'm afraid it's easy from now on!! ”

Sure enough, as Xu Tian expected. Upon hearing this, Situ Yun's face quickly changed, although it was only for a moment, but this also confirmed Xu Tian's guess.

Mr. Xu said seriously, whether it is a doctor or an alchemist, he will not let his patients have an accident in his own hands. It's about dignity and work ethic!! ”

Situ Yun said slowly with a calm face. It's just that he didn't look at Xu Tian when he said these words, but looked away.

Xu Tian took advantage of this extremely short time to put the materials in his hand under the Dan furnace. And those fiery charcoals together...

After that, Xu Tian did not speak again. On the contrary, Situ Yun was a little dazed, silently looking outside the house, not knowing what he was thinking.

After Xu Tian thanked him again, he said goodbye and left.

Situ Yun looked at the departing Xu Tian in a trance, he didn't want to do anything that violated his morals, but his mother was in the hands of others, and now, he couldn't control so much.

Situ Yun settled down, and this furnace of medicine had come to an end. He didn't listen to Wang Ling, and the deadly poison just made Cao Cao never wake up.

Shaking his head, he put all the distractions aside and waited until everything was ready. Open the furnace to get the medicine.

But at this moment, the flame that was supposed to be extinguished under the Dan furnace suddenly burned violently. And it's getting bigger and bigger, and there's a faint uncontrollable momentum.

Situ Yunmeng's eyes widened and blurted out.

"It's impossible!!"

Situ Yun quickly came to the Dan furnace and looked down at the ground of the Dan furnace. He had to stop this from happening now, or the furnace would all be scrapped. He didn't want to do it again...

Situ Yun was about to get up and call someone to come and help, when suddenly he noticed that there seemed to be something under the Dan furnace. A large piece of paper wrapped in paper, the outer paper was dissipating at a rapid pace, and a transparent hedron quickly revealed in one corner until he saw the yellow powder.

Situ Yun scolded secretly, and in an instant he reacted to what was going on. It seems that Xu Tian must know something!

But in a moment, the fire grew bigger and bigger. The moment Situ Yun approached the Dan furnace, all the paper wrapped outside disappeared.

In the midst of Situ Yun's pupil contraction, a loud bang sounded. The entire backyard seemed to be shaken.

The Dan furnace exploded in all directions, and Situ Yun was the closest, and a strong force pushed him aside, and he fell to the ground fiercely, motionless......