The other party seemed to be waiting online. After Klein sent it over, the other party quickly sent a message.

Bellamy said, "I want an epic-grade weapon."

Seeing the contents of the other party's message, Klein couldn't help but curl the corners of his mouth.

This bid was a little too much!

An epic-grade weapon. It was the Golden Firestorm Saber that Klein had used previously.

The Golden Firestorm Saber had exchanged for more than 800 souls for Klein.

Although Klein's fame and the Golden Firestorm Saber's characteristics had increased by quite a bit, it was still a great help to him.

An epic weapon would greatly improve a person's strength.

Forging it was also very troublesome. Although the composition of the Golden Firestorm Saber was still in his forging room.

There were also a lot of materials needed to synthesize the Golden Firestorm Saber!

After thinking for a moment, Klein directly rejected him.

"Impossible. You don't know what an epic-grade weapon means. Furthermore, there are a lot of materials needed to forge an epic-grade weapon. This transaction isn't worth it. Let's exchange for something else."

After Klein sent it over, the other party fell silent for a moment before sending over another message.

"What if I offer the materials?"

"Then, I'll add a Frost Gem."

Klein was taken aback when he saw the message. There was actually a frost gem!

It seemed like he had underestimated them.

However, there were still a few hundred people left in the catacombs world.

These few hundred people were elites who had been selected from thousands of people and survived. Their strength was naturally different from the people from before.

With so many people in the catacombs world, it was obvious that they had their own fortuitous encounters.

Klein was also very satisfied with the bid. Two sets of natural treasures, plus the materials he had prepared, made it look like Klein had made a profit no matter how he looked at it.

Therefore, Klein nodded in agreement.

And so, the two parties began the transaction at the auction house.

Thanks to Klein's reputation, he had obtained two types of natural treasures and the materials needed to refine an epic-grade weapon in advance.

After the transaction was completed, Klein took out the frost gem.

[Frost Gem: Contains an extremely rich amount of mutated water elements, ice. Through the combination of other materials, it can be synthesized into a crystal that helps pets evolve. The method of obtaining it is the mutated Tier-6 Behemoth, Frost Wyvern, Golden Treasure Chest, and so on.]

Ice elements?

Klein nodded.

These were mutated varieties of five elements that Klein had never come into contact with before.

It seemed like this was the trend of the catacombs world in the future!

This Frost Gem looked very strange, as if it was a stone.

Its exterior was green, and there were traces of flowing substances flowing inside.

Furthermore, there were traces of a chill that froze everything in his hand.

Following that, Klein took out the Holy Light Egg.

[Holy Light Egg: A mystical item filled with light elements. By combining it with other materials, it can be synthesized into crystals that can help pets evolve. Method of obtaining: Collection, Golden Treasure Chest, and so on.]

Light element.

It was another mutated element.

According to Klein's memories from his previous life, Light and darkness were both mutated elements. Their strength was even stronger than the other five elements.

This Holy Light Egg looked like an egg.

The egg was long and white in color. It emitted waves of terrifying heat.

Klein sensed it slightly. The heat waves inside were even more terrifying than his purplish-black flames!

Furthermore, there was actually a faint trace of blood on the egg.

Klein wiped it and looked at it.

He came to a conclusion. It seemed like Bellamy had tried to activate it.

It just didn't succeed.

This prevented Klein from trying.

Following that, Klein put away the two materials and picked up the forging materials that Bellamy had given him.

Klein was already familiar with forging the Golden Firestorm Saber.

He came to the forging room and placed the materials on the ground.

Looking at the place that he hadn't been to for a long time and seeing that there was no dust, Klein sighed at the wonders of the base!

Then, he threw the materials in and opened the synthesis column.

He flipped down and found the Golden Firestorm Saber's synthesis blueprint.

After opening it, the materials were enough. Klein directly clicked on the synthesis.

The speed of synthesis took about ten minutes before it was completed.

A sword flew from the forging room into Klein's hand.

Klein took a look and reminisced for a moment before trading it to Bellamy.

After the trade was done, he didn't expect someone to privately chat with Klein again.

Jack: "Is Big Brother Klein around?"

Jack: "I have a Holy Light Egg. Do you want it?"

Klein took a look and tapped on the text.

"What's the offer?"

Jack hesitated for a moment as though he was in a dilemma. After a long while, he said, "I hope to become your disciple."

Disciple?

Upon hearing the other party's request, Klein frowned.

He was used to traveling alone, so he naturally didn't have such a plan.

Therefore, he directly rejected it.

"I can't agree to this condition. Put forward other conditions."

The other party clearly knew that it was impossible, so he didn't pester him further and put forward his request once again.

"If you add ten more golden runes, I can agree to this deal."

Jack clearly knew that his conditions were a little excessive.

Therefore, after he said it, he couldn't help but clench his hands.

After all, he was currently facing the strongest expert in the catacombs world, Klein. If he were to bear a grudge, he probably wouldn't live more than a day.

However, he didn't expect Klein to agree to it.

Soon, Klein changed the price of the transaction, and the other party successfully completed the transaction.

To Klein, this transaction was very worthwhile.

This was because the drop rates of bosses above tier 7 were extremely shocking.

Especially the drop rates of the five elements, which were in large piles.

If he was lucky enough to encounter a boss that specialized in them, the drop rates would be even more terrifying.

For example, the Stone of Destruction that Klein had defeated, the golden runes could be said to be a bountiful harvest for Klein.

Of course, it wasn't that runes were useless to Klein.

In fact, the further he went, the higher the rune requirements for Klein's synthetic weapons.

For example, the Endless Sword in front of him. This Endless Sword was only a legendary weapon, and its requirements had already reached an average of 50 runes.

What about the artifact above legendary weapons?

What about the other legendary equipment?

Clearly, Klein's requirements for runes were very high. And although Klein had the strongest Endless Sword, his armor wasn't that high. This was what he wanted to accomplish next.

Apart from the materials needed for the Endless Sword, he still had quite a bit left.

In other words, Klein didn't lack runes for the time being.

After the transaction was completed, no one contacted Klein anymore.

He waited for a while before hanging up the system and preparing to explore the cave.

Klein woke up Little Wind and Little Fox and told them to look for the exit of the cave.

There was nothing he could do. The cave was too big!

If he were to search for it himself, it would definitely take a lot of time.

Furthermore, there was no danger in the cave, so Klein didn't have to worry about letting them out.

Therefore, the man and the two beasts headed in the same direction.

After about ten minutes, Little Fox found it, so she brought Klein straight out of the cave.

When they reached the entrance of the cave, the system's notification rang.