Less than half a minute.
Zhou Hong arrived at the underground cave.
As expected, Zhou Hong felt a strong vibration coming from the underground cave.
"You will all die." A mental wave full of anger came from the underground cave. What is called a mental wave is when creatures from different worlds cannot communicate through language, so they emit mental waves. By sensing each other's mental waves, they can understand each other's intentions. Otherwise, with so many creatures in the universe, if everyone couldn't speak the same language, wouldn't it be impossible to communicate?
"Young master, it seems the situation is not good." The butler, Old Ma, in Zhou Hong's mind, looked very nervous.
"How can I possibly subdue such a powerful immortal realm creature?" Zhou Hong gave a wry smile. He could feel the other party's power from the mental wave just now. Zhou Hong felt like an ant trying to subdue a human.
"It's not your fault. Perhaps I guessed wrong. This immortal realm creature seems to be breaking free from the seal soon. Young master, to be safe, you should leave quickly." Butler Old Ma advised.
"Wait." At this moment, Zhou Hong suddenly thought of something.
"What is it?"
"Old Ma, are you sure this immortal realm creature sealed here was left to me by my grandfather in my previous life?"
"I can't be completely sure, but it's more than eighty or ninety percent."
Zhou Hong nodded and said, "Then, since my grandfather in my previous life dared to do this, he must have also considered what would happen if my strength was still weak and I couldn't subdue this immortal realm demonic beast. But since my grandfather still did this, he must have given me a way to subdue it."
Old Ma in his mind also thought of something and exclaimed, "Sub-world."
"Yes, use the sub-world to subdue this immortal realm creature." Zhou Hong smiled.
"Haha, that's right. Although your current strength is very weak, you are like an ant in front of this immortal realm creature. However, you have inherited your grandfather's sub-world from your previous life! This sub-world was refined by an Immortal King. In the sub-world, you are the sky, you are the earth. You only need to bring this immortal realm creature into the sub-world, and then, even if this creature is very strong, you can still subdue it."
"Hehe!" Zhou Hong also grinned.
"Then what are you waiting for? Quickly shrink the sub-world into my body." Zhou Hong urged.
"Well, this still requires my help, as I am the soul of the sub-world. Let's go to the surface first."
A few seconds later, Zhou Hong arrived on the ground.
"Receive it!" Old Ma shouted.
At this very moment, in the Kunlun Sub-domain, Jesus Garden, Dreamland, Eastern European World, and other sub-worlds, the ground suddenly began to shake violently.
Zhou Hong's sub-world was divided into ten small spaces on Earth. Kunlun Sub-domain was located in a space in China, Jesus Garden in a space in North America, and similarly, Dreamland and Eastern European World were in other places.
At this moment, Zhou Hong shrunk the sub-world into his body. These ten originally separated spaces immediately began to merge, like ten small bubbles merging into a large bubble.
"Ah, what's happening?" In Zhou Hong's sub-world, all the martial cultivation sects that originally lived there let out earth-shattering screams because they found that mountains were collapsing, rivers were flowing backward, as if they were being decomposed again.
About ten minutes later.
The ten separated sub-worlds merged into one extremely vast sub-world.
"Young master, the sub-world has been shrunk into your body."
"Good."
"Now, the ten originally separate spaces have all merged together, so the space of the sub-world has expanded by almost 10 times."
"10 times? Isn't that 10 times larger than Earth?" Zhou Hong was shocked. Previously, one Kunlun Sub-domain was about the size of Asia. Ten spaces combined were about the size of Earth. Now, with a tenfold increase, it's equivalent to the area of ten Earths. Zhou Hong never expected his sub-world to be ten times larger than Earth after merging.
"Yes, the reason it was divided into ten spaces before might be that Earth was too small to bear it, so it was divided into ten parts and scattered across different continents."
"I understand." Zhou Hong nodded.
The next second, Zhou Hong also instantly entered the sub-world.
As expected, Zhou Hong felt that the sky was higher, the land was vaster, and all the mountains and rivers were more magnificent.
"Old Ma, are the martial cultivation sects that lived here before still here?" Zhou Hong asked.
"Of course. Anyway, they live in your sub-world, and it doesn't affect you in any way. The only thing that affects them is that they can't enter and exit freely anymore."
"That's good."
Without further ado, Zhou Hong quickly returned to the deep underground pit.
"How do I take the immortal realm creature in the deep underground pit into the sub-world?" Zhou Hong asked.
"I'm not sure either, but I think if we take the pillar of sealing into your sub-world, then the sealed creature might also enter your sub-world. Your grandfather wouldn't leave you a too complicated process."
"Alright, I can only try." Zhou Hong walked up and placed his hands on the pillar of sealing.
As expected, the pillar of sealing began to shake.
A strong mental wave came from the underground deep pit again.
"Who are you?" The creature roared and asked.
"I am your master." Zhou Hong also sent out the same mental wave.
"Are you Immortal King Sheng Gu?" In the next second, the sealed creature underground sent out a trace of fearful mental wave.
"What do you think?"
"No, impossible. You violated the immortal rules, were annihilated by the Immortal Emperor, and will never be reborn. Impossible."
"Haha, you even know this."
"No, you are not Immortal King Sheng Gu. Immortal King Sheng Gu's mental power is not this weak. Who exactly are you?" A few seconds later, the sealed immortal realm creature seemed to have discovered something.
"What if I tell you the truth? Immortal King Sheng Gu was my grandfather in my previous life. Now, I have inherited the sub-world that my grandfather in my previous life once created."
"Sub-world? Are you trying to bring me into your sub-world? And then achieve the goal of enslaving me?"
"It seems you are very smart."
"You're dreaming. I will tear apart your sub-world and annihilate you." The creature in the deep pit roared and threatened. However, he was right. Although Zhou Hong had a sub-world, his本体 was weak. If a very powerful person entered his sub-world, they might tear apart his sub-world, and Zhou Hong would also be instantly destroyed.