The spiritual energy of the world was similar to all living things. It has a cycle.

Akin to that of a ball thrown into the air, the most powerful person should be born at the peak of the spiritual energy cycle. Then, upon its decline, the spiritual energy of the world would sharply decrease in quality. It would then become increasingly difficult for anyone to make a breakthrough in their cultivation.

This represented the end of an era. Even if one had terrifying strength, they would still be unable to display it. They could only seal themselves up and wait for the next spiritual energy recovery which signaled the start of an era.

A cycle represented the coming and the end of a life.

A life for ordinary people was about a hundred years.

A tree's life could last for thousands of years.

Plantlife only lasted a single autumn.

Different lives had their own different life cycles.

This was how the world worked.

Why was it that when Lin Jiufeng had only just arrived in this world, the most powerful person in the world was only a Great Grandmaster cultivator?

It was impossible for people to find living Martial Sages at that time.

Later on—when the spiritual energy showed signs of recovery—Martial Sages gradually appeared.

But it was only when that rain fell did the world thoroughly changed.

It was only after that rain did the people found out that a brand new world had arrived.

The demons in their demon's den were all waiting for the right opportunity.

Unfortunately, they were suppressed by the Demon Lord 1,500 years ago.

The Demon Lord was one of the last Human Gods of the previous spiritual energy recovery cycle.

Before he died, he discovered that the demons from the demon's dens would be coming out in the distant future.

Although he was a demonic cultivator, the Demon Lord wasn't planning on colluding with them.

He directly moved the palace that he had spent his entire life constructing at the center of a prosperous land that gradually became the Yuhua God Dynasty. Then, he also suppressed the exit of that demon's den. In fact, he even used his own copper coffin to suppress it.

The Demon Lord sure was altruistic!

Then, the Chasing Corpse Sect found the palace.

They wanted to open it up and plunder its treasures.

From the beginning till the end, the people of the Chasing Corpse Sect had no idea that there was an extremely terrifying demon's den beneath the palace itself.

They studied the palace for a long time, but they still couldn't open its doors.

As a result—when the Chasing Corpse Sect was hunted by the people of the world—they had no choice but to give up this Land of Extreme Negative Energy along with its treasures.

After that, hundreds of years passed. The Yuhua God Dynasty was finally founded and they chose the surrounding area to be its Imperial Capital.

The stories about the demon's den, the Demon Lord, and the Chasing Corpse Sect disappeared silently together with the Land of Extremely Negative Energy.

In the end, the prince of the Yuhua God Dynasty was deceived into building a palace here.

Then, lady luck abandoned him and he died of depression soon after.

Afterwards, the place became the famous Cold Palace.

No one even dared to come here by now.

Lin Jiufeng mentally sorted out the origins of this Land of Extreme Negative Energy.

'At first, I was puzzled as to why a Land of Extreme Negative Energy was born here. Moreover, following that rain, the Land of Extreme Negative Energy was also refreshed for signing in. Who created such a place?'

'I finally understand now. It's not the Yuhua God Dynasty, nor the Chasing Corpse Sect, nor is it the Demon Lord. The Land of Extremely Negative Energy was created by the people of the demon's den that the Demon Lord had sealed.'

'They are the original owners of the Land of Extremely Negative Energy. It's just that they chose to seal themselves here after the end of an era. Then, as time passed, I became the owner of this place…'

Lin Jiufeng murmured.

The white cat anxiously wrote on the side.

"Help me ask about the whereabouts of the Demon Lord."

Lin Jiufeng immediately asked the demon.

The demon that was being held by the neck didn't dare to not answer.

He replied almost immediately. "I don't know. They all said that the Demon Lord is dead because he wanted to suppress our demon's den. Even in an era with poor spiritual energy, such endeavor was still a great danger to his life."

The white cat meowed and became depressed.

It was still thinking about finding the Demon Lord if the latter was still alive.

"Powerful man, I've answered everything and I've been honest all this time…"

"Can you let me go?" The demon begged in grievance.

Back in his era, he had been an infamous demon.

But as the era changed, these demons lost the ample support of the world's spiritual energy, so they sealed themselves underground and became trapped in this Land of Extreme Negative Energy, waiting for the arrival of a new era.

Right now, after spending a long time without properly cultivating, their proficiency in their techniques and abilities had atrophied. Similar to those that spent a long time on their beds, their skills and abilities were currently unusable for them.

'When I was at my peak, it was easy for me to crush a Human God like you to death…'

'You are only able to strut around because I am suppressed and unable to absorb the spiritual energy of the world. Once I'm free and can absorb spiritual energy again, I will definitely cut off your head as soon as I can.' The demon cursed in his heart.

But on the outside, he was still very obedient.

Lin Jiufeng pondered for a moment before asking, "Other than your demon's den here, are there any other self-proclaimed factions?"

"There's way too many…"

"Our demon's den is one of the 18 demonic sects of the previous era. The other 17 demonic sects had also sealed themselves. There are also some Daoist factions, Buddhist factions, rogue cultivators, hidden powerhouses, and so on…"

"They have all sealed themselves and are waiting for the arrival of a new era," The demon said in a matter-of-factly way.

"In other words, although this world looks like it is a brand new era with everyone standing on the same starting point on the surface, there are countless self-proclaimed powerhouses in private, waiting for the right time to appear?" Lin Jiufeng pondered before asking.

"That's right, so you'd better let me go…"

"This way, there will be no grudges between us."

"Move this coffin away, and we will overturn this palace. Then, our demon's den will be able to reappear in the world," the demon said excitedly, "by that time, we will definitely satisfy you in whatever way you want."

Lin Jiufeng watched as the demon winked at him all the while promising all sorts of benefits.

But Lin Jiufeng ended up shaking his head in indifference as he said, "I have already understood what I wanted to understand. As for you, just stay in the demon's den and stay sealed there."

Lin Jiufeng directly hurled this demon into the demon's den.

"No…"

The demon screamed.

He instantly circulated his might.

Surging with violent demonic energy, he charged out.

It has been too long since he was sealed. He was already numb and tired. He didn't want to stay in the demon's den anymore.

He wanted to see this brand new world.

Dong!

But under Lin Jiufeng's foot, the palace trembled a few times. Layers of talismans appeared at the entrance of the demon's den. They intersected with each other and formed a perfect sealing array formation.

The demon directly collided with the sealing array formation.

Blood flowed from its head as it fell into the endless abyss with a tragic cry.

"Human, just you wait! I will definitely come out and kill you!"

The demon shouted angrily, its voice echoed far and wide.

Lin Jiufeng's expression was as calm as ever he replied, "On top of this den is my Cold Palace. If I let you guys out, wouldn't the Cold Palace that I've lived in for 30 years be destroyed in your hands?"

He still had to sign in at the Cold Palace, he couldn't let them destroy it.

[Do you want to Sign-In before a demon's den?]

Speaking of the devil…

Lin Jiufeng raised his brows at the timely arrival of the system prompt.

But he didn't hesitate as he said decisively, "Sign in."

It was obvious that this was the first time that this demon's den had been exposed to the outside air. After all, the Demon Lord's coffin and the palace outside the coffin had been blocking this demon's den.

There was also a lot of soil surrounding the entrance itself.

It would be a miracle if anyone was able to discover it without deliberately looking for it.

Lin Jiufeng judged that he would receive bountiful rewards for signing in before a place that was discovered for the first time after so many years.

[Sign-In successful. Received Demon Suppression Record cultivation technique.]

[Sign-In can be repeated here. As long as you defeat different demons, you can sign in again.]

Lin Jiufeng thought that signing in for a cultivation technique was already good enough.

But who would have thought that it would be a place where he could sign in repeatedly?

"Monster Spawner?"

This term appeared in Lin Jiufeng's mind as he had played Minecraft in his previous life.

In the eyes of others, this demon's den was an extremely dangerous place that could take anyone's life at any moment.

But in Lin Jiufeng's eyes, this was just a Monster Spawner.

A Monster Spawner that he could use to indefinitely solo farm the demons within it.