Here, there are more than a dozen refining furnaces, a large number of refining materials and some successful or failed weapons.

In the middle of the chamber of secrets, there is a huge refining furnace, in which there is a burning flame. The temperature and power of the flame are terrible, which is even more terrible and powerful than the power of Xiao Yifeng's two heavenly fires.

In front of the furnace, there was an old man in a white robe with a haircut. It was obvious that he was the master of Tiangang in the mouth of Dong Pengfei.

"Grandfather!"

At this time, Xiaosi came up to the old man and called kindly.

The Tiangang master raised his head, his long hair spread out, revealing a face full of beard and wrinkles.

"Master Tiangang is so powerful!"

Xiao Yifeng looked at master Tiangang and said in his heart.

Although he can't see the strength of those who dominate the realm, he can still judge their general strength because he was the master of the starry sky in his previous life.

Master Tiangang's pure martial arts strength is much stronger than that of Dong Pengfei, and even stronger than that of lingxiuyuan. At least he dominates the existence of jingbazhong. He may be the master of title.

This holy city is worthy of being the first city in the ancient world. It's really Hidden Dragon and crouching tiger.

The old man Dugu was one, the master Tiangang was another, and the Lord of the holy city, who had never been seen before, was unfathomable.

"Xiaosi!"

Master Tiangang looked at Xiaosi with a kind smile on his face and touched his head.

Then master Tiangang glanced at Xiao Yifeng:

"is it that you want to exchange purple rose stone from me, and you want me and Dong Pengfei to help you upgrade your weapon level?"

"That's right. As a reward, I have 15 methods of refining artifact and three methods of refining artifact that the master has never seen."

"The guarantee is something that the master has never seen before. With these, I believe we can make the master go further in refining weapons."

Xiao Yifeng said with a smile. He knew that these things were absolutely the most attractive for these craftsmen.

Fortunately, he opened the fourth level of yin and Yang Canon last night, otherwise he didn't know what to use to get through these master craftsmen.

Of course, if you give him some time, he may not need these refiners, because he can make powerful weapons himself, even better than them.

Only now that he was just starting to refine weapons, he couldn't produce too strong weapons, so he asked others for help.

Master Tiangang's eyes twinkled and said, "you can show it to me first."

Then Xiao Yifeng handed over these 15 methods of refining artifact and three methods of refining artifact to master Tiangang. These are very precious existence in the fourth level of Yin Yang canon.

Every method of refining artifact can greatly improve the success rate, and even the ancient master of refining artifact can't have it. Even the eighth level master of refining artifact can refine artifact.

Like Dong Pengfei, after seeing these things, Tiangang's face was full of incredible looks.

The pupil opens big, the whole person is addicted to them all of a sudden, cannot extricate oneself for a long time.

"My grandfather, what's the matter with him?"

Xiaosi looks at his grandfather with a curious look on his face.

"He's OK!"

Xiao Yifeng smiles.

After a long time, Tiangang came back and looked at xiaoyifeng with an incredible look.

"How do you have these things? It seems that even the master of weapon refining in ancient times didn't have these methods. How did you get them? "

Sky Gang looking at Xiao Yi wind sink a voice way.

"These are my personal secrets. It's not convenient to disclose. I just don't know if these things can be exchanged for the master's Purple Rose Stone and please move your hand!"

Xiao Yifeng said.

"If you take out other people, even if you take out the elixir or the elixir to improve your strength, I won't do it, but you are very powerful. I can't refuse what you take out!"

With a wave of his hand, a purple stone like glass appeared in Xiao Yifeng's hand. It was obviously the purple rose stone, which was used to refine the weapon.

"Thank you very much. When will master be free? President Dong is waiting for you in the association of weapon refiners. He said that if you can make a move, he can promise to upgrade one of my imperial weapons to the top level of artifact, and I still have purple minerals in my hand!"

Xiao Yifeng said.

"With the weapon refining method you gave me, plus purple rose stone and purple mine, and the joint efforts of old man Dong and me, if you can't upgrade your weapon to a top-grade artifact, I can die."

"But it's more difficult to improve the weapon's level than to refine a weapon by yourself, but I promise I will give you a top-quality artifact. I'll do what Tiangang says!"

Tian Gang opens his mouth.

"Thank you, master!"

Xiao Yifeng said gratefully."Needless to say, compared with what you have given me, what I have done is nothing!"

Tiangang stood up and shook his head.

"Boy, I think you are also an extraordinary person. Plus the thing you gave me, we are destined. I have a treasure here. I don't know if you want it or not?"

Tiangang looks at Xiao Yifeng and shows a smile at the corner of his mouth.

"What baby?"

A touch of curiosity flashed in Xiao Yifeng's eyes.

Shua!

With a wave of Tiangang's hand, a dazzling light flashed out. Xiao Yifeng and Xiao Si couldn't help blinking.

Then a long green sword was suspended in the void. The body of the sword was broad and slender, and the handle was carved with a strange pattern.

At this time, the sword sounded, which contained a terrible sword meaning, and Xiao Yifeng felt a sense of destruction in the body of the sword.

It seems that once the power in the sword is released, it will destroy the sky and the earth. I'm afraid that the whole yard will be turned to the ground in an instant.

Moreover, when Xiao Yifeng explored the sword, he felt a palpitation in his heart, as if there was a wild beast in the sword, as if he was going to swallow it up.

"This sword is named Tianyou divine sword. It's the fourth artifact in the list of artifact!"

Tiangang said.

"Tianyou sword? The fourth artifact on the list

Xiao Yifeng was surprised. He didn't expect that Tiangang still had an artifact ranking fourth in the list of artifact, and the other party gave it to him so easily.

At this time, Xiaosi also showed a look of surprise. Cherry opened her mouth slightly, looked at her grandfather and said:

"grandfather, Tianyan and brother Tianhu have always wanted this sword, but you didn't give it. Now it's so easy for you to give it to an outsider!"

"Although their talent is OK, it is not enough to control this sword. The reason why this sword is called Tianyou divine sword is that it is sealed with the spirit of a legendary Tianyou divine beast!"

Tiangang said.