Klein followed Little Fox to the front of the cave. Then, he looked in the direction of the cave and received a system notification.

[Ahead is a swamp. It's very dangerous. If you want to see the catacombs world, you can go in and take a look. Of course, you have to be proficient in earth magic, or you might be dragged into the bottomless abyss by the Swamp Dragon.]

Looking at the system notification, Klein shook his head.

Of course, Klein knew earth magic, but it was far from being proficient.

If he was really trapped in the swamp, mixed with water and mud, Klein really didn't have the confidence to climb out.

Furthermore, there was a Swamp Dragon inside.

Although Klein didn't know what a Swamp Dragon was, would it be easy as long as it was a creature that had a connection with a dragon?

It was obvious that this thing was definitely not weaker than a level 7.

Furthermore, the cave inside was a swamp. He had the geographical advantage, and his strength had to increase by at least three levels. Therefore, even if Klein had the Endless Sword, he couldn't say that he could take it down without any injuries!

With this in mind, Klein turned around and left, searching for the next cave entrance.

Soon, Klein found the cave directly in front of him. When he arrived in front of the cave, the system notification appeared.

[There's a flame in front of you. There's a group of terrifying creatures gathered inside. The weakest among them is at least level 6. If I were you, I definitely wouldn't go looking for trouble with them at this time. Furthermore, the flames inside are extremely terrifying. Forget about your purple-black flames. They can only be fuel inside.]

After reading the system's notification, Klein couldn't help but curl the corners of his mouth.

This system was too discouraging!

The purplish-black flames were a skill that he had been proud of for a period of time. It had also caused great trouble to the Stone of Destruction, the Blood Ape, and the Ghoul.

He didn't expect that he couldn't even mention his name in front of the system!

He felt wounded.

However, this piqued Klein's curiosity. What kind of flames were inside that the purplish-black flames could only be used as fuel?

One had to know that the purplish-black flame could even burn through the soil and stones on the ground.

Furthermore, the second boss, the Ghoul's blood lake, could even be burned by the purplish-black flame. From this, one could see the power of the purplish-black flame!

However, the problem now was that there was a group of creatures that were no weaker than tier 6. This made Klein somewhat uncertain.

This was because once a creature reached tier 6, its weakness would be very small.

And as its strength increased, its intelligence would also increase, such as the Blood Ape and the Ghoul.

Especially the Stone of Destruction. Its intelligence was already higher than that of a normal person!

Therefore, unless the other party wasn't a creature or had a very obvious weakness, the system would probably find it difficult to find the other party's weakness!

With this in mind, Klein shook his head and didn't plan on probing it now.

After all, the most important goal now was to increase the bloodlines of the two beasts.

As long as their bloodline was increased, Klein's overall strength would increase by three or four levels.

He wouldn't have to go up to kick hard steel alone when he was fighting the enemy!

With this thought in mind, Klein walked towards the next cave entrance.

At that moment, Little Wind, who had been nowhere to be found, returned.

When he saw Klein, he immediately revealed a delighted expression as he waved his hands and said something.

Clearly, he had also found the entrance to the third cave.

Klein patted his head and praised it. Then, he followed Little Wind to the third cave.

A few minutes later, a man and two beasts arrived at the third cave.

Klein looked forward.

The system notification appeared.

[There's a Platinum Treasure Chest in this cave. This is good news. Platinum Treasure Chests are extremely rare. But if I were you, I wouldn't be so careless. It's filled with danger. There is the Armored Scorpion that can burrow into the ground, Harpy that can fly, and the Rogue Archer that can turn invisible.]

[This is the boneyard of heroes, but it's also the hunting ground of heroes. If you want to get the Platinum Treasure Chest inside, you have to be careful! The Armored Scorpion burrows into the ground very quickly, and it comes out even faster. That poisonous tail could poison a tier 5 Earth Dragon to death. Therefore, for safety, I suggest that you kill it as soon as you enter, or else you must always be careful underground!]

[The Harpy is good at using wind magic, and her speed is extremely fast. It's a pity that your Little Fox is too weak, or else it would be less troublesome to pin you down. Although the Harpy is very strong, you can still handle it with ease.]

[Rogue Archer, an archer that can turn invisible. Its bow and arrows are very powerful. Make good use of wind magic, and perhaps you might be able to catch its shadow.]

...

Looking at the system's notification, Klein frowned.

There was actually three tier 6 monsters in a cave.

Furthermore, these three tier 6 monsters all had their own talents.

As such, the system's notification had to be split into three sections to describe their weaknesses and strengths.

This made Klein have no choice but to pay attention to them.

There is a platinum treasure chest inside?

Klein's heart warmed slightly.

The treasure chests in the catacombs were divided into iron treasure chests, bronze treasure chests, silver treasure chests, gold treasure chests, platinum treasure chests, crystal treasure chests, master treasure chests, king treasure chests, elemental treasure chests, and so on.

Klein had only seen gold treasure chests in the previous caves, and he hadn't seen them many times. However, the drop rate inside was extremely terrifying.

He never expected to encounter a platinum treasure chest this time. It was a level higher than a gold treasure chest. He wondered what the drop rate was!

Klein couldn't help but think.

But at the same time, the crypt creatures inside were also the focus of Klein's attention.

With this in mind, Klein no longer hesitated. It was just three tier 6 monsters. It wouldn't be a big problem to be careful.

After all, he had dealt with the Stone of Destruction, the Giant, and the mysterious man.

Their levels were higher than the existences inside!

Klein didn't hesitate any longer and began digging.

When there was only a thin layer of film left, Klein put Little Fox and Little Wind away.

They were still too weak. If they were targeted by the monsters inside, it would be difficult for them to survive!

The two beasts were unwilling at first and wanted to fight alongside Klein.

However, when Klein dug up the catacomb, the aura of the tier 6 monsters inside emanated. They knew that the existence inside wasn't something they could deal with for the time being.

They could only listen to Klein's words and return to the base.

With Little Wind and Little Fox gone, Klein had fewer obstacles. Therefore, he put away his shovel, kicked open the black membrane in front of him, and walked in.

After entering the cave, Klein was shocked by the scene in front of him.

In front of him was an endless forest.

The forest was very lush, giving the entire underground space a little more vitality.

In the middle of the forest, Klein could vaguely see the platinum treasure chest in the middle of the forest through the cracks.

The treasure chest was very beautiful. Although it was very far away, the platinum treasure chest's light was emitting wantonly, as though it was tempting every passerby who passed by the cave.