The gloomy breath made everyone feel depressed, as if it was even difficult to breathe.

"Is this the secret realm of the Demons?"

Many people raised their heads and looked at the gloomy aura in the sky solemnly.

The secret realm of Heavenly Demons has been opened once a hundred years. At this moment, almost 99% of people in the square have seen this secret realm of Heavenly Demons for the first time, unless some top martial kings in their 100-year-olds are.

However, even the top Martial Kings who were over 100 years old were just watching from outside the square, and as for the Martial Kings who had entered the secret realm of the Heavenly Demons, there were very few.

"Did the Heavenly Demon Secret Realm? I haven't felt such a kind aura for a long time!"

When the aura of the Heavenly Demon Secret Realm emerged, among the crowd outside the square, a man in a black cloak suddenly looked up and stared at the Heavenly Demon Secret Realm with a flash of eyes. His expression was excited, and a strange color bloomed out of his eyes, and at the same time, a strange aura emanated from his body.

This aura is extremely obscure, but it is somewhat similar to the aura in the secret realm of the Heavenly Demons, as if it comes from the same source.

"Um?"

In the square, Qin Chen seemed to feel something and suddenly looked into the crowd.

However, his eyes swept over, but he didn't notice anything unusual. He frowned and said, "Is it an illusion?"

Without thinking too much, Qin Chen turned to look at the secret realm of the Heavenly Demons.

Buzz buzz buzz!

At this moment, the entire Chaotian City suddenly opened, and amazing auras soared into the sky, combining with the gloomy sky.

Rumble!

Under the shocked gaze of everyone, a strange space appeared in the gloomy sky in front of him. Behind the space, there seemed to be an ancient land looming, emitting a desolate and thick ancient aura.

"What a terrifying aura, is this the secret realm of the Heavenly Demon?"

"Look at the sky, there seems to be a continent behind that space."

"I can't believe that in the void above our Chaotian City, there is actually a continent hidden?"

"It is said to be the battlefield where our human race and foreign races fight."

The crowd was shocked, and everyone was greatly touched. They looked up at the sky and their hearts were surging.

The secret realm is a small space in ancient times. There are countless warriors who have explored the secret realm.

Like the Black Death Swamp that Qin Chen explored at the time, it actually belongs to a type of secret realm. Various spaces are stacked together and are relics from ancient times.

The ancient southern capital was naturally a kind of secret realm. The palace hidden in the void was extremely terrifying.

However, compared with the secret realm of the Heavenly Demon in front of you, both of them are a little worse.

The mysterious space above the sky emits an infinite aura of vastness. If a person with better eyesight can even see that at the end of the endless chaos and void, there is even a vast continent hidden.

"From the breath, this secret realm of heaven and demons is at least a high level. No wonder this hundred dynasties attaches so much importance to it."

Qin Chen had seen too many secret realms in his previous life, and his understanding of the secret realm was far beyond ordinary. He clearly felt that the level of the Heavenly Demon Secret Realm was very high. If it were not for the strong man above the Martial Emperor, he would definitely attract a large number of Martial Emperors to come.

Unfortunately, due to the level limitation, this secret realm of the Heavenly Demon was only circulated in the land of hundreds of dynasties. Qin Chen was in the Martial Realm in his previous life and had never heard of it.

"The aura of this secret realm of the Heavenly Demon is somewhat similar to the Black Death Swamp and the Ancient Nandu. Is there any connection between these secret realms?"

At the same time, Qin Chen keenly felt that the aura of the ancient Nandu, the Black Death Swamp and the Heavenly Demon Secret Realm were very similar. On the surface, it looked different, but in essence, it was exactly the same.

"Qin Chen, how does grandpa feel like the secret realm of the Heavenly Demon Realm, the Saint Luo Realm of the Five Northwest Kingdoms?"

At this moment, an old voice sounded in Qin Chen's ears, but it was Mr. Qin Batian who sent a message to Qin Chen.

"It's very similar to the Secret Realm of San Lo?"

Qin Chen was stunned.

He naturally heard of the Secret Realm of the Saint Luo. It is the most powerful secret realm among the Demon Ancestor Mountains of the Five Kingdoms in the Northwest. Many powerful people from the Five Kingdoms have entered it and explored.

However, there are many dangers, so many powerful people from the five countries have only searched on the outside and cannot enter the depths.

But there are many ruins from before the Dark Age. Qin Chen remembered that his mysterious rust sword seemed to be excavated from the secret realm of the Saint Luo. Until now, Qin Chen has not yet figured out the true face of his mysterious rust sword.

Also, the demon armor on him was also a strong man from the Great Power Dynasty that year, found in a secret realm in the Demon Ancestor Mountains.

Obviously, there is a great possibility that the secret realm is the Saint Luo secret realm.

In addition, the ban on the Demon Armor is similar to the ban on the Gunandu, and the ban on the Gunandu is exactly the same as the stone pillars of the palace that Qin Chen saw deep in the Black Death Swamp.

Combining all of this made Qin Chen realize in an instant that although there are many secret realms near the hundreds of dynasties in the Northern Heaven Realm, they should actually originate from the same age in ancient times.

"So, all the secret realms are likely to be related to the alien races that were confronted by human races in ancient times."

Qin Chen vaguely had a guess.

And just as he was thinking, the formation of Chaotian City finally came into contact with the secret realm of the Heavenly Demon on the Sky.

Boom!

A huge hole was tearing apart in an instant, and at the same time, a colorful light column descended from the sky. Through the light column, you could vaguely see that behind the light column was a desolate and vast world.

"Hmm? No, why is the passage of the Heavenly Demon Secret Realm smaller than the one recorded?"

Suddenly, a low cry sounded, and the Lord of Guanlu Pavilion on Tianji Pavilion suddenly changed his expression.

"What's going on?"

Shangguan Lu's exclamation immediately attracted everyone's attention and stared at him.

The ancestors of the seven dynasties also seemed to be confused.

Shangguan Lu looked solemn, and a compass-like treasure appeared in his hand instantly. Several pointers kept trembling and finally stopped.

His face turned pale, as if he had seen something incredible, and murmured: "Impossible, how is this possible?"

"What happened to Shangguanlu?"

"The Heavenly Secret Plate shows that this secret realm of Heavenly Demon was opened by someone about eighteen years ago, so the energy this time is insufficient, so the teleportation channel opened is only 80% of the normal size." Shangguan Lu said with his eyes.

"It was opened eighteen years ago? How is this possible?"

Everyone in the land of hundreds of dynasties was stunned.

The secret realm of Heavenly Demons is sealed in the void space above Chaotian City. Every hundred years, it will be closest to Chaotian City, and the seal will reach its weakest point before the passage can be opened.

Eighteen years ago, the seal was still intact, how could anyone have opened the secret realm of the Heavenly Demon?
Chapter completed!