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The Blood Spirit Dragon looked at Lin Mu's brows and asked, "What's the matter?"

Lin Mu nodded, and said with a solemn face: "There is no life in this spirit grass. ”

"What! It's all lifeless, how is it possible? I see it's growing pretty well, I'll take a look!" After the Blood Spirit Dragon finished speaking, he also picked up the Heavenly Star Grass and felt it carefully.

"It's really lifeless!How can this be?" the Blood Spirit Dragon also widened his eyes.

A lifeless spirit grass, even a ninth-level spirit grass, was no different from a weed.

But what really made Lin Mu feel strange was where all the vitality of these spirit grasses went?

"Let's go ahead and the answer should be in front of us. ”

Lin Mu and the Blood Spirit Dragon got on the flying spirit weapon again, and continued to fly forward, and after another half an hour, Lin Mu and the Blood Spirit Dragon found another place with lush vegetation and landed.

But the result was the same, and all the spirit grass was completely lost.

Looking at such a high-grade spirit grass, one by one, becoming like a weed, the Blood Spirit Dragon felt that his heart was dripping blood.

"How did this place become like this, judging from these spiritual grasses, this place should have been a place full of aura and vitality in the past, how can it become like this now. The Blood Spirit Dragon was heartbroken, looking at the spirit grass that could only be seen and could not be used below, while chattering endlessly.

"I think the answer should be in front of you. Lin Mu said, looking at a black dot on the horizon.

The Blood Spirit Dragon followed Lin Mu's gaze and saw a small black dot, and said, "It seems to be a city there." ”

Lin Mu nodded, did not speak, but controlled the flying spirit weapon with all his strength to fly forward.

The black dots are getting bigger and bigger and more real under the full speed of the trees.

This is indeed a city, and it is a great city full of dead air.

The thousand-zhang high city wall makes people unable to see the top at a glance, and the continuous city wall is full of 100 miles in length.

Although it was not close to the city, even if it was so far away, I could feel a sense of oppression from the depths of my soul.

When the flying spirit weapon was still five hundred miles away from the city, it was already completely oppressed by the breath of the city and was about to decompose.

The trees had to descend and approach the city on foot.

The perimeter of the castle was devoid of grass, revealing bare gravel land.

The magnificent, quaint, but lifeless city of the city, the trees all give birth to a deep sense of powerlessness.

Lin Mu never thought that a city would give him such a deep sense of powerlessness.

The Blood Spirit Dragon was also surprisingly quiet at this time, his little face was full of solemnity, and there was a thoughtful look between his eyebrows.

When Lin Mu and the Blood Spirit Dragon really approached the city, Lin Mu stared at the city and was suddenly stunned.

"Black Gold Stone Spirit!"

As the name suggests, the essence of black lazuli is the essence of black lazuli.

Although the black lazuli essence is also produced in black lazuli, the concepts of the two are completely different.

Take the black lazuli in the teleportation hall as an example, it would take at least a thousand years for such a large piece of black lazuli to give birth to a black lazuli essence the size of an egg.

And the black gold stone essence is used to refine, a necessary material for top-level defensive magic weapons.

A piece the size of an egg can already be auctioned for a sky-high price at auction.

But the city in front of Lin Mu with a radius of thousands of miles was actually built with black gold stone essence.

How much wealth is needed to build such a city, and how much money is needed to build such a city?

Or, more accurately, how bold it takes to build such a cage.

And for whom was such an impregnable cage built?

Although Lin Mu had not personally entered the city to see it, Lin Mu believed that such a city, even if he wanted to lock up the immortals, it would be a breeze.

"This is a baby, I'll deduct a little, let's take it back, it's not in vain. The Blood Spirit Dragon looked at the black gold stone essence and said with his eyes shining, and after speaking, he was going to make a move and detain the black gold stone essence.

"Little guy, those are just the protective layers that are placed on the outer layer to seal the runes, you need the black gold stone essence, I can give you some" Just as the blood spirit dragon was about to make a move, an ethereal voice suddenly came, startling the blood spirit dragon.

When the Blood Spirit Dragon heard the voice, he hurriedly retreated and hid behind Lin Mu.

When Lin Mu heard this voice, he was also slightly stunned, and then arched his hand to the empty space and said, "The senior thinks that he is the Dugu senior, right?"

Hearing Lin Mu's words, the owner of the voice laughed twice and said, "Young man, you are very smart, and the old man is Dugu and invincible." ”

Lin Mu had too many questions in his heart, and now that he met such a person, he naturally had to ask all the questions, so he hurriedly bowed his hand and saluted again, and said, "Senior Dugu, may I ask if this cave is your place of cultivation?"

"Dongfu?" Dugu Invincible was stunned for a moment, and then smiled: "I said why is it so lively this year, why did I, the most unpopular place of exile, come here so many people at once." It turns out that you treat the old man's place as the Xiuzhen Cave Mansion!"

"What is the Exiled Lands?" Lin Mu asked, frowning and blurting out.

Dugu was invincible and said: "Young people, you don't need to know this, and you don't need to know, when you should know, you will naturally understand." ”

Lin Mu didn't feel discouraged, but continued to ask: "Senior Dugu, are you really an ancient cultivator, and what is going on with the ancient?"

There has always been a great deal of controversy about the ancient era, but the ancient era seems to have disappeared suddenly, so there has been no conclusive conclusion about the ancient age. Lin Mu finally met a cultivator who might be from the ancient era, so he naturally had to ask carefully.

And if you can figure out the things of the ancient times, even if Lin Mu can't fly to the immortal realm in the future, he can guarantee that he will not be limited by the longevity of two thousand years.

Dugu Invincible was silent for a long time before he opened his mouth faintly and said, "Is it ancient? The old man can't remember it anymore, the time is too long, and the old man has forgotten a lot of things." ”

After two questions in a row, he didn't get the answers he wanted, and Lin Mu was really a little discouraged.

"What was the purpose of the predecessors who built this place, and who is locked up here?"

Dugu Invincible said: "The purpose of building this place is naturally to maintain the stability of the cultivation realm, as for the people who are locked here, they are all people who are trying to destroy the cultivation realm......"

"Dugu old horseman, this king swears to kill you!"

Before Dugu Invincible could finish speaking, a roar suddenly came from the city, and then a huge demon shadow appeared in the city.

Lin Mu didn't know what words to use to describe this demon shadow, the city wall here was already thousands of feet high, but the height of this demon shadow was still above the city wall.

The Shadow was bound with countless rune chains, and the Shadow struggled violently to break free from them.

However, to the frustration of the Shadow, although these chains look very thin, they can not be earned.

The distance was far away just now, and Lin Mu didn't really feel the strength of this demon, but now that the distance is close, Lin Mu deeply understands the strength of this demon.

Although Lin Mu didn't know what the strength of this demon was in the past, Lin Mu knew that the current strength of this demon was definitely not under ordinary immortals, and even if he was himself back then, he was not its opponent.

A demon who is not under the immortals is imprisoned in the cultivation realm, so what is the strength of this Dugu invincible.

There were too many secrets in ancient times, and Lin Mu suddenly felt that everything he had experienced in the past was too childish.

In the past, I always thought that I was standing at a very high height, and re-cultivating was just a small matter for me. But in the cultivation realm, the successive things were known to Lin Mu.

I don't know anything at all, everything I know in the past is just a drop in the bucket, and I am the frog at the bottom of the well.

"It's been 50,000 years and you haven't stopped, it seems that you haven't suffered enough!" Dugu Invincible's voice sounded faintly, and then he saw the entire city flickering with brilliance, and those chains also emitted a dazzling light.

Then I saw that these chains went directly into the body of the Demon Shadow, and began to continuously extract the divine substances in the Demon Shadow.

"Ahh

These divine substances were pumped out, and the shadow let out a heaven-shattering scream.

And the Blood Spirit Dragon looked at these stream-like divine substances, flowing down the chains, and the hara was about to drip out.

"Do you think about who he is anymore?" After the Demon Shadow gave in, Dugu Invincible's voice rang out again.

Lin Mu nodded and said, "Yes!"

Dugu was invincible and said: "He is the demon king of the demon world, 50,000 years ago, he coincidentally fused the bones of an ancient divine beast, and then tried in vain to occupy the cultivation realm, and was finally captured by me and imprisoned here." ”

Fifty thousand years ago, it was too far away from the forest, and I am afraid that even those sects that have inherited it for a long time will not have any records.

"If you have any questions, just ask them as soon as possible, and when you finish asking, the old man has something to invite you to talk to. Dugu Invincible said softly.

Lin Mu said: "Senior Dugu, I want to ask, now the cultivation realm can't fly to the immortal realm, what's going on?"

Since he couldn't get the ancient things from Dugu Invincible, this matter became what Lin Mu cared about the most.