When Fu Tian said this, he looked a little excited.

"Why are ancient techniques that monks can practice now, and ancient elixirs that medicine cultivators can now refine, but no one can refine them as immortal weapons?"

"Other refiners don't care, but I can't accept it. I made a vow early on that I would use my life to find the real reason."

"And today, I found one of the reasons."

Fu Tian's eyes were filled with eager light, and the two apprentices were also full of respect at this time, obviously admiring their master's ideals.

"Here?" Qin Cheng raised his eyebrows.

"Yes, it's right here, or underground."

Fu Tian stepped on the ground beneath his feet.

"Senior is talking about earth fire." Qin Cheng's heart suddenly moved.

"Yes, the materials required for refining are there, and the refining master is no weaker than the ancient ones. I also have the immortal energy. The biggest difference is the flame."

"In other words, it is the fusion of earth and fire." Fu Tianyu said in surprise.

Qin Cheng's eyes flashed with surprise.

I have also seen some of the current views in the weapon refining world in classics.

The purer the earth fire, the better the effect. This is the consensus of many weapon refiners.

But Futian's view is completely the opposite.

"The Hengshan Sect itself has an underground fire underground, and there are also underground fires below the two sects on the east and south sides." Fu Tian said.

"The three types of earth fire have different attributes and qualities, but according to my calculations, if the three fires meet at this location, and combined with my secret method, they can condense into flames that far exceed ordinary earth fires."

"That is to say, the flames here are more than ten times stronger than normal earth fires," Fu Tianxin said.

Qin Cheng frowned.

Fu Tian's words were truly shocking and made him a little too shocked, or a little hard to believe.

"You may not believe me when I say this suddenly, fellow Daoist Qin, but if you can prevent the guard from discovering it, I can do a little test and you will understand." Seeing Qin Cheng's expression, Fu Tian smiled and said.

After so many years of research, there are too many people who can't believe it, but I have tried it no less than a thousand times, and I am confident that I will never make a mistake.

"Can."

Qin Cheng nodded, drew a divine pattern in the void with his fingers, and then penetrated into the surrounding formations.

If Fu Tian's words can really come true, then there will probably be earth-shaking changes to the Upper Realm Continent.

"Um?"

At the entrance of the treasure house, the old man in charge of guarding suddenly felt the light curtain around him shaking.

He opened his eyes, scanned his surroundings with his consciousness, and found that there was no movement. He shook his head again, closed his eyes and meditated again.

Then, in front of Qin Cheng, Fu Tian took out strange treasures one by one and placed them on the ground.

He performed several spiritual arts to activate these treasures.

Later, Qin Cheng sensed that under the earth, wisps of subtle earth fire aura were being attracted.

These earth fires are divided into three directions, just as Futian said.

puff!

Just before the eyes of several people, a wisp of three-color earth fire rose above the treasure, exuding a strong scorching heat.

"This flame."

Qin Cheng's pupils suddenly moved. He did not understand earth fire, but he understood ultimate fire.

At this time, the flames condensed in Futian not only reached the ultimate fire level, but also merged into ultimate fire.

Moreover, although this flame is the aggregation of three kinds of earth fire, it gives Qin Cheng a very harmonious and balanced feeling.

Compared with the ground fire controlled by Fei Hong in Tietao Valley, it was indeed more than ten times stronger.

What Fu Tian said may be true.

"That's right, I can be absolutely sure this time. It is here, in these three types of earth fire, that a perfect balance can be achieved." Fu Tian said with a smile.

"Senior, I understand what you asked me to do." Qin Cheng suddenly smiled.

"Yes, I want to thoroughly test the power of this flame here, not to create a bunch of flames, but to complete a real weapon refining."

Fu Tian nodded and said: "Earth Fire is my first step towards refining a real immortal weapon. I must be 100% sure."

"So, there must be a lot of movement at the time, but this is within the Hengshan Sect and a treasure house. It is impossible for the other party to let you refining here with peace of mind." Qin Cheng said.

"What this junior has to do is not to be disturbed by these guys when you are refining the weapon. It is best not to notice them."

"Yes, this small sect of the Hengshan Sect is easy to handle, but it relies on the Blood Bear Sect, and the Blood Bear Sect enshrines an old Taoist who can deduce the secrets of heaven."

"I'm worried that if there is too much trouble here, this old guy will spy on me and be implicated in Tietao Valley." Fu Tian sighed.

"How long does it take, senior?"

"If everything goes well, it will only take a stick of incense."

"But Fellow Daoist Qin, this matter is not urgent. Let's leave first and you can think about it slowly."

Qin Cheng nodded.

It is indeed quite difficult to not be able to destroy the Hengshan sect, but also to prevent the whole sect from disturbing Fu Tian, ​​or even being unable to sense the movement in the treasure house.

There is a lot of movement in refining weapons, especially when refining top-level treasures. Even if the formation is concealed, it is not omnipotent.

What's more, here, there is a formation outside, there are strong men in the Tribulation Realm watching in the treasure house, and further away, there are more than a dozen monks in the Tribulation Realm.

No matter how you look at it, this task is as difficult as a natural chasm.

No wonder Fu Tian is willing to help him repair two kinds of immortal weapons. This matter is indeed not easy to solve.

Leaving a formation behind in the treasure house, the four people from Qin Cheng returned to the original barren mountains.

"Senior, give me two days and you can start preparing other materials."

Back at the outskirts, Qin Cheng fell into deep thought, while Master Fu Tian and his apprentice began to make various preparations for the weapon refining.

Sitting cross-legged on a barren mountain, Qin Cheng kept thinking.

"Killing is definitely not possible. The Blood Bear Sect can deduce the secret. If everyone dies, even if the Blood Bear Sect is unwilling, in order to give an explanation to other dependent sects, the culprit must be found."

"If you use poison pills, the opponent is a monk from the same sect, and each monk practices alone and poisons one by one. If something goes wrong, it will be very difficult."

"It won't work if it's a large shielding formation. The old man in the treasure house is too close and cannot be used at all."

After thinking of several methods, Qin Cheng got through them all on his own, and felt that it was not easy to implement.

Feeling that it was not easy to come up with the answer, Qin Cheng simply entered the medicine refining space and used different time flow rates to gain more opportunities to think.

A few days passed in a flash, and although Qin Cheng had a few ideas, they didn't feel very safe and he was still hesitating.

At this time, his eyes were bloodshot and he looked a little tired.

And Qin Cheng always felt that he seemed to have missed some idea and fell into a dead end, but for a while he couldn't remember what went wrong.

"Oh, you people who use your scheming to deceive people and want to do things secretly all day long are really tired."
Chapter completed!