Immortal cultivation starts with copying.

On the second floor of Bailian Pavilion, Chen Yunhao and a weapon refiner sat facing each other.

There are always three or five weapon refiners in Bailian Pavilion all year round, and the most famous one usually does not come out to receive guests.

The person who contacted Chen Yunhao was a middle-aged weapon refiner whose cultivation level was higher than his.

"Fellow Daoist, to what level do you want to refine this magical weapon?"

The middle-aged weapon refiner named Yao asked, looking up and down at the hidden thorn in his hand.

"Of course, the higher the better, but at the very least it can't be lower than a mid-grade magic weapon."

Chen Yunhao replied without even thinking.

He intended to use the Dark Assassin as an auxiliary magic weapon, but sometimes the Dark Assassin could turn the tide.

Therefore, if the level is too low and the power is too weak, it is better not to upgrade.

Although using low-grade magic weapons was enough for him with his cultivation level, Chen Yunhao's vision had become higher and he no longer looked down on low-grade magic weapons.

Besides, since you're spending a lot of money to have someone upgrade, you might as well do it all in one go.

"Your flying sword needs to be infused with Skyfire Gold to increase its toughness and strength. Skyfire Gold isn't cheap. Also, this flying sword needs to be infused with materials with spatial properties, otherwise it won't be able to be upgraded above the mid-grade level..."

The weapon refiner named Yao looked the dark thorn up and down and explained it to Chen Yunhao as if he knew everything about it.

Seeing that he was a professional, Chen Yunhao had to secretly give him a thumbs up. After just a few tries, he figured out the characteristics of the hidden thorn.

"I don't have any of these materials. Master Yao, please give me a price."

Chen Yunhao nodded and replied.

"Floating Cloud Stone and Sky-Splitting Wood are not materials that can be purchased with Spiritual Stones..."

Master Yao shook his head and said.

Chen Yunhao understood the meaning of the words. It was true that space-related treasure materials were rare in the world, and even if there were spirit stones, there might not be anyone to sell them.

"Master Yao, can you tell me if the stuff here is worth the cost of the materials?"

Chen Yunhao took out another storage bag and handed it to Master Yao.

"It's a demon corpse in the transformation stage. It's a pity that it lacks leather armor. It's a bit lacking!"

Master Yao scanned the storage bag with his spiritual sense and said with a little surprise and regret.

"I also have the scales of this monster. I would like to ask Master Yao to help me refine a piece of armor."

Chen Yunhao smiled and waved his hand, and a neatly folded piece of leather armor appeared on the table.

"It's indeed top-quality refining material. After refining the armor, there'll be some left, but it's still not enough...!"

Master Yao reached out and touched it, then said.

According to convention, the remaining leather armor after refining can be used to offset the cost of refining equipment.

But the bones and muscles before were far less than the cost of space materials.

Moreover, Master Yao’s words made it very clear that he did not want spirit stones.

For a weapon refiner at the level of Master Yao, there is no shortage of spirit stones, but what is lacking is various rare materials, so most of the time they hope to barter.

Chen Yunhao lowered his head and thought carefully, counting all the valuables on him.

Even though he had a lot of good things on him, including a few spiritual herbs, these were useless in the weapon refining shop. He had to bring out something that would be attractive to the weapon refiner.

After thinking for a long time, Chen Yunhao gently patted the storage bag and flipped his hand.

In the palm of his hand was a black stone the size of a baby's fist, and the stone still emitted a hint of coldness.

These were the four stones he had dug out from the ground in Tianyan Mansion, and he had knocked off a little of one of them.

Because he didn't know what the treasure was, he knocked off a piece and wanted to find someone to identify it.

If Master Yao knows it, it can offset part of the cost and also let him know the origin and function of this item.

"What is this?"

Master Yao took the black stone from Chen Yunhao, frowned, looked it up and down, and didn't even recognize it.

"Wait a moment, fellow Daoist. I'll go get my uncle to come and take a look."

Although Master Yao didn't know what kind of treasure this black stone was, he was obviously very interested in it. He immediately got up and left to find his uncle.

Master Yao’s uncle is a true master of weapon refining, one of the elders in Bailian Sect, and the person in charge of Bailian Pavilion.

Not long after, Master Yao and an unkempt white-haired old man came in together.

After the old man came in, he didn't even look at Chen Yunhao. His eyes were fixed on the black stone on the table.

Master Yao walked up to Chen Yunhao and said in a low voice.

"This is my Uncle Shi..."

This old man is called Shi Lilong, and he has reached the Golden Core stage. He is also a well-known weapon refining master in the entire Thunder Island, a true weapon refining master.

Shi Lilong took two steps at a time, picked up the black stone, held it in his palm, looked at it left and right, and muttered to himself.

Not long after, Shi Lilong took out a jade slip and looked at it. Then his eyes lit up and he laughed heartily.

"Uncle, what kind of refining material is this? How come I, your nephew, have never seen it before?"

Master Yao asked this question at a very timely moment, and it was exactly what Chen Yunhao wanted to know.

Shi Lilongtou didn't turn around, still looking at the black stone in his hand.

"This isn't a weapon refining material, so of course you don't recognize it..."

Before he finished speaking, Shi Lilong turned around to look at Chen Yunhao and asked.

"Where did you get this Black Soul Stone?"

"Senior, could you please clear up my confusion first..."

Although Chen Yunhao didn't say it, he was actually a little angry in his heart.

Even if you, Shi Lilong, have a high level of cultivation, these things are mine after all. It’s not appropriate to ask directly about their origins!

"Uh, I'm sorry for being so abrupt. I heard that fellow Taoist wants to ask us to customize a magic weapon?"

Shi Lilong was stunned for a moment, perhaps realizing that he was a little impatient, and then he said with a smile.

Without waiting for Chen Yunhao to answer, Master Yao beside him quickly came over and whispered a few words.

When Shi Lilong heard this, the smile on his face became even wider.

"Upgrading magic weapons is easy, and so are space materials. If you are willing to use this black soul stone in exchange, I will personally help you refine your magic weapon. How about it..."

"this……."

Chen Yunhao pretended to be reserved, but in fact he was already very happy. He knocked this thing off a whole piece, less than one tenth of the whole piece, and he had four whole pieces.

So this thing is not rare for him, but he can't be too proactive either. He has to find a way to control it.

"Senior Shi, I just found this one, so I'll give it to you..."

Chen Yunhao showed a reluctant expression on his face.

"Senior Shi, can you tell me what kind of treasure this is?"

"This is called the Black Soul Stone. It's not from this world, but from the underworld. It has the same function as the Nourishing Spirit Tree. By the way, where did you get it?"

What is the Yang Shen Wood? Chen Yunhao was still confused, but he thought it must be a rare thing in this world. He would ask someone about it later.

"I found this in Tianyan Mansion."

"Tianyan Mansion, no wonder, I said this thing shouldn't appear in this world...!"