240: Chapter 240 The Mysterious Black Building

"Should we tell Sister Luoluou?" Su Xiaoyi asked slowly.

Mu Cheng: "No need. If you're willing... you can come with me. Consider it broadening your horizons."

No matter how powerful the Bloodline Power or how formidable the techniques... in the end, real combat experience is necessary. Otherwise, one is still weak.

"Alright then! I'll go with you." Su Xiaoyi thought for a moment and finally agreed.

Mu Cheng didn't hesitate either. Releasing his Purple Cloud Wings, he soared into the sky. Su Xiaoyi quickly followed behind him...

Six hours later.

"Is this the place?" Mu Cheng pondered, looking ahead but not finding anything particularly special.

After confirming multiple times, Su Xiaoyi said, "Mhm, this is it... The Monster King's aura disappears into this Black Sea."

"Alright! Stay close behind me." Mu Cheng didn't hesitate and entered the Black Sea.

Su Xiaoyi quickly followed behind...

Not long after, sure enough, this place truly had a hidden world—an enormous downward passage.

Until a depth of ten kilometers.

"Huh? What a huge thing." Mu Cheng was also greatly surprised.

The colossal monster that appeared before them looked like an Iron-Armored Dragon, but its aura was at least more than ten times stronger.

"What a terrifying aura... Is this thing dead? It feels like it surpasses even a Monster King." Su Xiaoyi was completely flustered.

"It's probably injured. Regardless... let me think about how to get it out." Mu Cheng began pondering seriously.

Su Xiaoyi: "Get it out? That... wouldn't that be dangerous?"

She was clearly panicked... Such a terrifying monster. Before understanding the situation, doing this was indeed a bit risky.

Just at that moment, Xiao Yao suddenly appeared.

"Master, this creature is called the Mysterious Dragon Turtle. Elder Origin said it's a creature from the Outer Space Circle."

"And who are you?" Su Xiaoyi was very puzzled.

Mu Cheng: "Who isn't important. What's important is that they are strong and a friend, not an enemy."

He couldn't be bothered to explain... it was better not to explain.

"It seems to be seriously injured. Let Xiao Yao handle getting it ashore first!" Xiao Yao certainly had the strength for this.

Mu Cheng: "Alright! Let's leave first."

After Su Xiaoyi and Mu Cheng left, Xiao Yao also began to act.

Releasing its Black Vines, it instantly wrapped the Mysterious Dragon Turtle tightly, then consciously controlled their growth.

The Mysterious Dragon Turtle, with a body exceeding fifty kilometers, was thus forcefully dragged away...

"Will this really work?" After returning to the surface of the Black Sea, Su Xiaoyi had absolutely no confidence in her heart.

Mu Cheng, however, had full faith. "Just watch. It's not a big problem for her."

Sure enough, not long after, bubbles rose from the Black Sea—it was Xiao Yao pulling the Mysterious Dragon Turtle up.

Finally, they could see it clearly in its entirety. It was like a mobile island.

It was indeed quite a spectacular sight...

"This... is just too insane!" Su Xiaoyi was clearly utterly shocked once again.

Mu Cheng: "All in a day's work."

"Master, come and help too!" Xiao Yao, controlling it alone, was clearly struggling a bit.

Mu Cheng: "Ah, it's not that I don't want to help, but if I release my Devouring Bloodline, this guy would probably be gone."

"That's easy to handle. Master, wait on land!" Xiao Yao thought and said.

Soon, an enormous Black Vine grew out, stretching wildly towards the land...

"Call Sister Luoluou. Otherwise, I can't handle this alone either." Mu Cheng instantly understood the meaning.

Operating the high-tech bracelet, he sent the information out.

"Sister Luoluou, got a big one. Come and help!"

"Mhm, on my way." Xiao Luolu quickly replied to the message.

"Let's go to land first. Also, tell Lanlan... have her keep an eye on the movements beyond the Black Sea defense line." Mu Cheng always felt... things weren't that simple.

Su Xiaoyi immediately made arrangements. "Mhm, I understand."

She wasn't stupid. She could guess that Mu Cheng was worried this big guy was related to other Monster Kings.

About ten minutes later.

"It's a Mysterious Dragon Turtle. Anyway, let's pull it ashore first." Xiao Luolu recognized it at a glance.

But business came first. With her and Mu Cheng working together, they finally pulled the Mysterious Dragon Turtle onto land.

"Sister Luoluou, you recognize this thing?" Mu Cheng asked curiously.

Xiao Luolu replied, "Mhm, this thing is seriously injured... and it's still a juvenile."

"It is indeed a juvenile." Xiao Yao also nodded in agreement.

Su Xiaoyi beside them watched intently, not interjecting a single word...

"A juvenile is this big? What would an adult be like then?" Mu Cheng was also a bit shocked.

But these weren't the main issues. "By the way... could this thing be related to the Monster Kings?"

"That's possible." Xiao Luolu couldn't say for sure either.

Xiao Yao: "A Monster King of this overlord level... wouldn't it be trying to recover by devouring other Monster Kings?"

"That's what I was thinking too." Mu Cheng felt the same way.

Su Xiaoyi finally chimed in. "That's simple... if the Monster Kings are coming for it, we'll know the answer by waiting."

"Mhm, for now, we can only wait... But to be safe, let's set up a Talisman Array!" Xiao Luolu nodded and said.

Xiao Yao: "Seems that's the only way. I'll leave the rest to Master and Sister Luoluou. Xiao Yao will return to continue cultivating."

After saying that, she vanished without a trace...

"Could she be a summoned creature? But this strength... feels even stronger than Brother Cheng." Su Xiaoyi was also very curious.

But she didn't ask further.

"Leave setting up the Talisman Array to me, Sister Luoluou... You and Xiaoyi go take another look at that deep pit!" Mu Cheng felt it was very necessary.

Xiao Luolu: "Mhm, leave it to me!"

Until the third day.

"Sister Xiaoyi, it's a large number of Monster Kings." Lu Lanlan suddenly sent a message.

Su Xiaoyi looked and hurriedly reported, "Brother Cheng, Sister Luoluou... it's a large number of Monster Kings, roughly a hundred."

"It seems... the Monster Kings really are coming for this guy." Mu Cheng wasn't the least bit flustered.

Xiao Luolu was the same. "Got it. Leave it to us, don't worry... You just focus on watching the show."

A mere hundred or so was just a trivial matter for Mu Cheng and Xiao Luolu.

Dealing with them wouldn't be difficult at all...

"Are you... sure you don't need our help?" Su Xiaoyi clearly hadn't grasped the situation yet.

Mu Cheng: "Of course. Monster Kings are indeed very difficult for you to handle, but for us, they're a minor issue."

"Alright then! I'll go back and help Lanlan."

Su Xiaoyi didn't dwell on this, clearly already believing that Xiao Luolu and Mu Cheng had the capability.

So very soon... she was gone.

"Finally, I can stretch my limbs a bit." Xiao Luolu released her Bloodline Wings and soared into the sky.

Mu Cheng quickly followed. "Sister Luoluou... have you noticed? These Monster Kings are much, much weaker."

"Mhm, the power levels here are indeed very weak. These Monster Kings... are at most around Ninth Order strength." Xiao Luolu nodded.

Mu Cheng: "Actually, I'm quite curious about what exactly happened in these two thousand years."

To be honest, technology had advanced a bit, but humanity's strength... had been greatly diminished.

"Whatever happened, I get the feeling... it's related to that thing called spiritual energy." Xiao Luolu also noticed the problem.

Mu Cheng thought: "If you hadn't mentioned it, I really wouldn't have noticed... Cultivation here just involves absorbing and refining spiritual energy."

"Forget it, forget it. Let's act first!" Xiao Luolu couldn't be bothered to think too much about this. The current task was more important.

"Mhm, it's all a piece of cake... should be easy to resolve." Mu Cheng didn't hesitate either. In an instant, he released his own Black Vines.

In the blink of an eye, he directly devoured over a dozen Monster Kings.

Iron-Armored Dragons, Godzillas, Golden-Horned Beasts, etc... all kinds of Monster Kings, as long as they swam in the water.

"This... strength is just too insane!" Lu Lanlan was shocked once again.

Compared to what she understood before... it was easily more than ten times stronger.

Su Xiaoyi: "Is this Brother Cheng's true strength? But I feel... it's far from just this."

"Sister Ninger, are there any more Monster Kings at the Black Sea defense line?" After Lu Lanlan sent the message,

she slowly said: "I also think... his strength is far more than this."

"None at the moment." Lan Ninger quickly replied.

Su Xiaoyi: "Given enough time... I think I could also reach strength like Brother Cheng's."

"Sister Ninger says there are no Monster Kings for now... Maybe we should hold off on repairing the Black Sea defense line?" After Lu Lanlan reported the situation,

she thought and added: "Hard to say. Although the techniques allow us to make breakthroughs, I feel there must be a limit."

"The limit wouldn't be that weak either. You've seen it... my current self has far surpassed the Ninth Order Peak." Su Xiaoyi couldn't quite explain the situation either.

Anyway, her becoming stronger was already a fact...

"I hope so. People have just started cultivating the techniques. It will take at least... two or three years to know the limit." Lu Lanlan pondered and said.

On the other side.

Xiao Luolu and Mu Cheng dealing with the Monster Kings was basically an instant kill, not requiring the slightest effort.

In just an hour, the battle was over.

"They're really too weak. Can't even muster a bit of interest." Xiao Luolu couldn't help but complain.

Mu Cheng: "It's okay, I guess. By the way... if we continue like this, could there be any unexpected consequences?"

Here, they weren't suppressed by Bloodline Power. The more he thought about it... the more worried he naturally became.

"Hard to say... Anyway, we haven't used our full strength." Xiao Luolu couldn't say for sure either.

"For now, let's help where we can. If the Black Sea weren't so vast... I'd want to explore it."

As she said, the current Blue-White Star was hundreds of times larger than before... Exploring the entire Black Sea was almost impossible.

Mu Cheng: "Let's just guard it like this. I believe things... probably aren't as simple as we imagine."

"Mhm, the Monster Kings probably won't give up so easily." Xiao Luolu felt the same way.

Another three days passed. This time, the assembled Monster Kings had reached a staggering five hundred.

"Brother Cheng, the number is at least five hundred... Do you need help?" Su Xiaoyi sent a message to ask.

"How about letting them get some practice? We'll have to leave eventually." After reading it, Mu Cheng thought and asked.

Xiao Luolu: "You decide. But... for them, it might not be a bad thing either."

"Alright! We'll guard the home front." Mu Cheng didn't hesitate and sent a message out.

"Arrange for people from the base to come out and get some practice. Brother Cheng and Sister Luoluou will guard the rear."

"Understood. I'll arrange it right away." Su Xiaoyi directly replied to the message.

Three months of hard training—it was time to see the results.

About half an hour later, dense crowds of mechas arrived at the scene...

"This... did everyone come out?" Mu Cheng was stunned just looking at it.

But just then, Lan Ninger suddenly sent a message.

"There's an urgent mission. Can one of you hold the fort alone?"

"Sister Ninger says there's an urgent mission, Sister Luoluou... can you handle things here alone?" Mu Cheng knew at a glance something major was wrong and hurriedly asked.

If Lan Ninger directly sought him out, it wasn't hard to guess—it must be a thorny issue.

"Don't worry. Leave this side to me... What could it be that requires your intervention?" Xiao Luolu was quite curious.

"Haven't asked yet. Let me ask!" Mu Cheng was quite embarrassed and hurriedly operated the high-tech bracelet to send a message.

"Sister Ninger... this matter probably isn't simple, is it?"

"Mhm, it's Skeleton Island, which has been gone for over two thousand years. So, after thinking about it, it's safer if you go." Lan Ninger quickly replied.

"It's... Skeleton Island." Mu Cheng answered, quite shocked.

Then he sent a message: "Sister Ninger, teleport me over!"

"Mhm, be careful! The reappearance of Skeleton Island... things probably aren't that simple." Not long after Lan Ninger's reply,

Mu Cheng, in the blink of an eye, was directly teleported in front of Skeleton Island.

"Huh? Why does this feeling seem so familiar?"

He pondered for a good while but still couldn't remember.

"Master, it's those eighteen mineral veins. Also, Xiao Yao senses... the aura of a demon god." Xiao Yao's voice came through his consciousness.

"It really is very similar. To be safe, let me tell Sister Ninger first!" Mu Cheng thought it looked more and more alike.

Not caring too much, he sent a message out: "Sister Ninger... please pay extra attention. This seems a lot like the Skeleton Island from over two thousand years ago."

"Don't worry. I'll arrange for people to set up a Talisman Array shortly. Without the nebula, no one inside will be able to get out." Lan Ninger quickly replied.

"Truly a super artificial intelligence, even more thorough than I thought... Next, I'll explore it myself." Mu Cheng had to admit, the reaction speed was truly fast.

Current Talisman Arrays were much more advanced than two thousand years ago. Setting them up shouldn't be a big problem.

So Mu Cheng didn't hesitate and soon leaped into Skeleton Island.

"Zombies... Why hasn't the hidden hint appeared? Could Xiao Yao's sensing be wrong?" Mu Cheng was full of doubts.

As if on cue, a hidden hint appeared right before his eyes.

[Warning! Warning! Warning! great demon god detected. Strength unknown. Level unknown.]

"That's more like it. As for these zombies... might as well deal with them all!" Mu Cheng didn't dwell on it.

Taking out the black hole heavy sword, he swung out over a dozen sword energy beams. Almost all the zombies on this level were eliminated.

Without the slightest hesitation, he directly leaped down to the second level...

The second level was still zombies, but in Mu Cheng's eyes, they were nothing. He easily cleared them out with sword energy.

The third level, the fourth level... until the final ninth level, Mu Cheng finally became cautious.

Ahead was an eerie black tower.

"Master, be careful. The aura here feels off." Xiao Yao emerged from the consciousness space.