In the story of the black slave, the forbidden area he mentioned is in this lake. As long as you enter this lake, you can find the location of the underground ruins.

But in the Black Death Swamp, water lakes like this are the most dangerous, because no one knows what will happen here.

There is a very likely situation where some terrifying blood beasts are hidden.

And in the Black Death Swamp, the perceived penetration power of the warrior was extremely weak, and he could not see what would be in this lake.

Therefore, even a sixth-level martial master rarely dares to enter such lakes unless he is desperate.

The black slaves only entered the lake after an accident several years ago and saw underground ruins.

"Explore it first."

Qin Chen did not hesitate and directly released his soul power. In places like the Black Death Swamp, soul power is more reliable, and the penetration of soul power is much stronger than mental power.

What puzzled Qin Chen was that this lake was extremely ordinary. No matter how he investigated it, it was just an ordinary lake, and there was no trace of the remains.

"The black slave shouldn't lie to me. If what he said was fake, he would be exposed as soon as he got here."

Thinking of this, Qin Chen did not hesitate, and swayed directly into the lake.

"Crash!"

The water splashed, and Qin Chen felt a chill all over, but the next moment, he no longer felt the resistance of the water, as if he had entered a void.

Qin Chen immediately understood that this was indeed a high-level hidden formation, and even the level was above what he imagined, otherwise he would not be unable to see any clues.

Looking around, there was something underwater in front of him. What appeared in front of him was really an underground world.

The sultry environment, the rich true energy of heaven and earth, the hard black rocks around it, and the rugged growth is completely different from the feeling of the Black Death Swamp.

But Qin Chen understood that this place should still be in the Black Death Swamp, but it was underground in the Black Death Swamp.

After landing on the ground, Qin Chen sighed in his heart that the pervert who arranged this hidden formation guy, who was able to arrange such a high-level hidden formation, was definitely not an ordinary formation master, or even a modern formation master. It seems that this place has been around for many years.

But what Qin Chen was confused about was that since this guy had arranged a concealed formation, why didn’t he arrange a defensive formation?

With the cultivation of that formation master, even if only an ordinary defensive formation is added, let alone a black slave, even if a seventh-level martial king enters the lake, he will only rush into the real lake and will not come to such a place.

The underground world that appeared in front of Qin Chen was not big, like a huge square, only about a dozen miles in a radius, but inside there were some strange rocks everywhere, with huge stone pillars standing here, extremely messy.

But in the center of this underground world, there is a dry small pond. In the center of the small pond, there is a brown huge rock standing there, and there is a small groove in the center of the huge rock.

Qin Chen immediately understood that this should be the place where the black slaves found the Qinglian Demon Fire and the Black Gourd.

The black slave once told him that his green lotus demon fire was found in the groove on this black stone platform, and the black gourd is also near the green lotus demon fire. There are even methods to control the fire worms and other spiritual insects in the black gourd.

Qin Chen came to the pond and was about to take a good look at the environment. Suddenly his eyes narrowed because he found that there were extremely subtle restrictions on the stone platform.

These bans are very unique and hidden on the brown rock. They are not extremely powerful ban masters and are absolutely impossible to discover.

Even if Qin Chen had not learned about a brand new method of ban refining in Gunandu, he might not have discovered such a ban.

How could there be a ban here? Qin Chen was immediately shocked.

The emergence of a ban means that this place is not formed naturally at all. In this way, the green lotus demon fire and the black gourd are all placed here by someone, but what is the purpose of his place here?

Qin Chen wanted to find a clue from these bans, but after observing for a long time, he found no clue. What surprised him was that these bans were actually a ban on nourishing them.

And the source is the pond below.

That is, someone put the green lotus demon fire and the black gourd here, and then set up a ban to use the spiritual water in the pond to nourish the green lotus demon fire and the black gourd.

Unfortunately, the spiritual water in this pond has almost dried up, and it is impossible to see what spiritual water that was once in this pond.

What made Qin Chen even more confused was that the prohibitions on this brown stone platform had no defense function except for the function of nourishing it.

According to the formation outside the lake and the terrible prohibition here, the person who left the Green Lotus Demon Fire as long as he set up a defensive formation or attack prohibition, let alone the black slave, even a seventh-level martial king came here, he would only have hatred.

The other party definitely has this strength.

But not only did the opponent not set up a defensive formation, he even placed the green lotus demon fire and the black gourd here directly, as if he was about to take it away by the person who discovered it. He also left a method of sacrificing the spirit insects inside on the black gourd, which made Qin Chen unable to understand the reason.

Is this clearly raising the green lotus demon fire for others, or is that the man is so arrogant that he thought no one could find this place?

After thinking for a while, Qin Chen, who couldn't figure out the reason, was too lazy to think about it and continued to walk forward.

The most important thing for him now is to find that Ku Yunzhi.

"It should be here."

After only a few kilometers, Qin Chen discovered what the black slave said.

This is an extremely flat piece of sand and stone land, but there is actually a maze and a killing formation on the periphery of the sand and stone land.

Moreover, this maze and killing formation are actually only fifth-level formations, and only fifth-level medium-level formations.

A faint smell of spiritual medicine was passed out from the formation, and Qin Chen immediately knew that Ku Yunzhi was definitely still in this formation and had not been taken away.

Moreover, this taste is clearly the ripe smell of Bichonja, and it has just matured not long ago.

Qin Chen was immediately surprised.

What he feared the most was that someone had already taken the lead and took Ku Yunzhi away. Now it seems that there is no one yet.

For Qin Chen, he could even arrange the fifth-level peak formation. It would be no problem to break a fifth-level medium-level formation.

However, the appearance of these two formations made Qin Chen's heart sank.

Because in the black slave's notification, there was no formation here at all, otherwise the black slave would not have discovered the bitter Yunzhi inside it at the beginning.

Obviously, after the black slaves left, others have been here.
Chapter completed!