Zi Ling frowned and then said, "It seems I have to check it out carefully."

As he said that, the vertical eyes at Zi Ling's eyebrows lit up, and a white light shone on the black stone pillar. It was obvious that Zi Ling was using her talented magical powers to investigate.

Jiang Fei stared at Zi Ling with anticipation. When the light at Zi Ling's eyebrows disappeared, he hurriedly asked, "How is it? Have you found anything?"

Zi Ling shook her head with a depressed look on her face and said, "This is an ordinary stone pillar, there is nothing special at all."

Jiang Fei frowned and said, "It's impossible. Since this stone pillar is placed here, it's impossible to be that simple."

Jiang Fei didn't believe in evil, so he hurried to the stone pillar and started to investigate carefully, but after observing for a long time, he still found nothing.

"Oh!" Jiang Fei sighed depressedly, then slapped the stone pillar with a palm.

Just when he touched the stone pillar, Jiang Fei had an illusion that he felt that the stone pillar seemed to have life. He faintly heard the rhythm of his breathing, but when he approached the stone pillar and listened carefully, he could hear nothing.

"Strange, was it because I had hallucinations?" Jiang Fei said to himself.

"What's wrong? Did you find anything?" Zi Ling asked hurriedly.

"I just felt that this stone pillar seemed to have life, and I seemed to hear its breathing." Jiang Fei said.

"How is this possible? I have investigated it just now. This is just an ordinary stone pillar." Zi Ling said hurriedly.

"Maybe it's my illusion." Jiang Fei said.

Zi Ling pointed to the passage and said, "Let's try again."

Jiang Fei nodded and walked towards the passage again. However, when they walked out of the passage, the situation in front of them was still exactly the same.

Jiang Fei didn't believe in evil. He made a mark on the black stone pillar and hurried into the passage. He wanted to see if this was the same place.

When Jiang Fei walked out of the passage again, he came to the black stone pillar and looked at it. His face showed a solemn look. The mark he had portrayed before disappeared, which seemed to be a brand new place.

"No, the breath here is so familiar that it shouldn't be a new place at all." Jiang Fei said with a serious look on his face.

"I also think this is the ninth floor, but how could that mark disappear?" Zi Ling scoundrel pulled her little head, looking thoughtful.

"It seems that if we don't crack the secret of this stone pillar, we won't think of leaving here." Zi Ling thought for a while and said.

Jiang Fei looked up and observed the stone chamber. There was nothing special about this stone chamber, only the black stone pillar in the middle, which looked ordinary, but actually very extraordinary.

"Hmph, I don't believe it." Jiang Fei snorted coldly, then took out the demon spirit dagger.

"What are you going to do?" Zi Ling asked curiously.

"You will know soon." Jiang Fei smiled slightly, then raised the magic spirit dagger and stabbed it at the Black Stone Pillar. He planned to destroy the Black Stone Pillar.

The Demon Spirit Dagger was extremely sharp and instantly inserted into the Black Stone Pillar. Jiang Fei did not stop. He pulled out the Demon Spirit Dagger and then inserted it into the Black Stone Pillar again.

An unexpected thing happened. Jiang Fei had just pulled out the magic spirit dagger, but the gap in the black stone pillar healed quickly.

"Sure enough, there is something strange. This is really not an ordinary stone pillar." As he said that, Jiang Fei accelerated his speed and stabbed wildly at the Black Stone pillar.

Jiang Fei's speed was very fast, but the black stone pillar was not slow. Jiang Fei worked hard for a long time and had no effect. The black stone pillar was still as intact as before.

"It seems that we may not be able to leave if we don't untie the secret of this Black Stone Pillar." Zi Ling said with a serious face.

Jiang Fei nodded and said, "You can check it out again."

Zi Ling nodded, and then the vertical eyes at her eyebrows lit up again, and white light shone on the black stone pillar.

After some investigation, Zi Ling frowned. She shook her head and said, "I don't know why, no matter how I investigate it, it seems to be just an ordinary stone, nothing special."

Jiang Fei narrowed his eyes slightly, he stared at the Black Stone Pillar and then said, "You try again."

As she said that, she saw the demon spirit dagger in Jiang Fei's hand stabbing at the Black Stone Pillar. Zi Ling did not hesitate and quickly investigated, and this time she showed a look of shock on her face.

"How is it? Are there any gains?" Jiang Fei asked hurriedly.

Zi Ling said with a serious face: "This black stone pillar seems to have life."

"What else?" Jiang Fei continued to ask.

"A strange force in the Black Stone Pillar prevented me from exploring, so I found nothing else." Zi Ling sighed and said.

Looking at Zi Ling's depressed look, Jiang Fei smiled and said, "It's great to be able to discover something now, let's try again."

As he said that, the demon spirit dagger in Jiang Fei's hand danced quickly, and the vertical eyes between Zi Ling's eyebrows lit up immediately, and white lights continued to shine on the gap chiseled by Jiang Fei.

This time, Jiang Fei accelerated the speed, and the gap continued to expand, and soon a small hole was formed.

"How is it? Have you noticed anything?" Jiang Fei asked hurriedly.

Zi Ling shook her head, Jiang Fei sighed helplessly, and then he used his martial arts with all his strength, and the speed was faster and faster.

As Jiang Fei continued to dig, a faint fiery red light suddenly appeared in the stone pillar, and the white light in the purple spirit's vertical eyes and the red light converged together.

"Ah!" Zi Ling screamed and then fell to the ground.

Jiang Fei was shocked. He never expected Zi Ling to be injured. He quickly turned around and hugged Zi Ling and asked with concern: "What's wrong?"

Zi Ling gasped for a moment, then said slowly: "Don't worry, I'm fine, but the red light forced me to stop my investigation just now, causing me to suffer a little backlash."

Jiang Fei breathed a sigh of relief. He turned around and looked at the black stone pillar. He saw that the excavated place disappeared, and the entire black stone pillar became what it was before.

"What the hell is this? Why is it so weird?" Jiang Fei said to himself.

Zi Ling thought for a while and said, "It's better to try it with the Demon Abyss Sword."

Jiang Fei thought about it, then nodded, and said, "This is all that's all now."

However, just as Jiang Fei was about to take out the Demon Abyss Sword, the sound of the Immortal Emperor's soul sounded.

"If you want to die, then do it."

Jiang Fei showed joy on his face, and he hurriedly said, "Senior, do you know what this is?"

"This is the black demon seal, which is sealed with a powerful demon spirit. Your Demon Abyss Sword is powerful. Once it is used, it will destroy the seal. When the demon spirit inside is released, you and I will die." The Immortal Emperor said with a serious face.

Jiang Fei's face changed drastically. He never expected that the strange black stone pillar would be a seal, and there was a terrifying demon spirit that even the soul of the Immortal Emperor was afraid of.

"Senior, what should I do?" Jiang Fei asked hurriedly.

Now Jiang Fei is trapped here. He originally thought that he could leave here by cracking the secret of the Black Stone Pillar, but now it seems that it is not the case. The Black Stone Pillar is a seal and cannot be touched at all. He didn't know how to leave here, so he could only ask for help from the Immortal Emperor's soul.

"This space is connected to the demon spirit in the black demon seal. If you want to enter the upper level from here, you can only kill the demon spirit." The Immortal Emperor said lightly.

Hearing this, Jiang Fei's heart suddenly became cold. The black stone pillar sealed was a powerful demon spirit that even the soul of the Immortal Emperor was afraid of. With his strength, how could he kill the demon spirit?

"Senior, is there no other way?" Jiang Fei said quickly.

"Of course there is." said the Immortal Emperor's soul.

Jiang Fei was delighted, and he asked quickly: "What's the solution?"

"It's very simple. Take control of this Tianshu Building. At that time, everything in this Tianshu Building will be controlled by you. It's naturally very simple to enter and exit here." said the Immortal Emperor's soul.

Jiang Fei's smile froze. The method that the Immortal Emperor's soul said was nothing like that. This Tianshu Building is a hidden emotion. How could he control it with his ability?

"Is there really no other way?" Jiang Fei asked.

"Of course, you can still return the same way." said the Immortal Emperor's soul.

The gimbal ruler is on the top floor of Tianshu Building. Jiang Fei must pick it up and let him return the same way. This is simply impossible.

"No, I have to get the gimbal ruler." Jiang Fei said with a firm look on his face.

"Then you kill that demon spirit." The Immortal Emperor said lightly.

"Aren't you kidding again? How could I do it with my strength?" Jiang Fei said quickly.

"You also know that this is a joke, so you still insist on going to the top floor?" The Immortal Emperor Shenhun said without hesitation.

"I..." Jiang Fei was speechless for a moment. He never expected that it would be so difficult to get to the top of the Tianshu Building.

"Is that the black demon seal?" Zi Ling suddenly pointed to the black stone pillar and looked at the soul of the Immortal Emperor and asked.

The Immortal Emperor's soul nodded slightly and said, "Yes, this is the black demon seal."

Zi Ling showed joy on her face. She looked at Jiang Fei and said excitedly: "This is the black demon seal, I have a way."

Hearing this, Jiang Fei was not only surprised, but also the Immortal Emperor was stunned. The two of them couldn't help but look at Zi Ling.

"What's the solution?" Jiang Fei said quickly.

"Have you forgotten that you are the heir of the blood of the Demon Emperor, and this black demon seal is the seal secret technique of the true demon clan." Zi Ling said hurriedly.

Hearing this, the Immortal Emperor looked at Jiang Fei thoughtfully, and then said, "She really forgot that she didn't remind me. You have the blood of the Demon Emperor in your body. This seal is a natural danger to others, but it is a smooth road for you."

Although he knew that the black demon seal was the seal secret technique of the real demon clan, Jiang Fei didn't understand the black demon seal at all. He said with a puzzled look: "I don't understand the black demon seal at all, what should I do?"
Chapter completed!