Lu Yun showed doubts, and Feng Xiao sighed: "You'll know when you arrive!"

Feng Xiao led Lu Yun all the way to the rear, which was a separate circular building that seemed to have only one floor.

When the two of them came to the door, the gate opened automatically, and there were ten black fortresses in sight.

Lu Yun was taken aback: "Move the levitation fortress!"

Feng Xiao was stunned: "Do you know these?"

Lu Yun nodded, but he couldn't tell how he knew each other.

Feng Xiao pointed to these black fortresses: "This is one of the Li family's heritage."

Lu Yun nodded, in his subconscious, the Mobile Levitation Fortress was also a top-notch powerful weapon, no worse than the Phantom Chariot.

He thought of the phantom chariots in Xuanyuan City, and saw these mobile levitating fortresses, and he couldn't help but wonder in his heart.

"It's all deserted outside, why is it still normal?"

"I've heard my father say that the main thing is the energy problem, the reason why the outside is deserted is mainly because there is no energy, and the reason why it still works here is because there is a complete energy system here, which can run for hundreds of years or even longer."

Energy? Lu Yun shook his head, he looked at the black fortress inside, and frowned.

Feng Xiao also showed a wry smile: "The Li family's background only knows my father and the three of them, as long as we take one step further, we will be warned, and if we don't quit, we will be attacked."

"This should be an important place in the past, the Li family has always been here, and I speculate that the passage is inside, so it is impossible for the three major families to come here."

Lu Yun was silent, this is a dead end, so he can't go down at all.

In the face of these terrifying weapons, I am afraid that there is no way to come to the peak of the Dragon and Tiger Realm.

It's just that he has already come here, should he stop there and go home, Lu Yun is a little regretful and unwilling.

"No matter what, we have to try no, if it doesn't work, we will retreat and think of other ways."

Feng Xiao nodded, the two glanced at each other, and stepped directly into the door, and at the same time prepared to exit at any time.

The two of them stepped in, as if activating the defense system here, and the ten mobile levitation fortresses all lit up with pitch-black barrels, and as long as the two dared to take a step forward, they would attack.

Feng Xiao's face changed, and he was about to pull Lu Yun out, but he saw that the ten mobile levitating fortresses fell silent again.

A virtual figure of a beautiful woman appeared in front of the two, dressed completely different from them, lifelike, like a real person.

"Welcome, Major, I wonder what can be done for you?"

Lu Yun was stunned: "Who is the major?" ”

The virtual beauty covered her mouth and chuckled: "The major is so funny, of course it's you!" ”

"You have certain privileges in this place, and you are entitled to enter and leave this place."

Permissions? What is this, Lu Yun was a little dumbfounded: "Can I go in." ”

The virtual beauty nodded: "Of course!" ”

Lu Yun thought of the Phantom Chariot in Xuanyuan City again, and he pointed to the Mobile Levitation Fortress: "Can I control them?" ”

The virtual beauty smiled: "Of course the major is qualified. ”

Lu Yun's face was overjoyed, if he could command these mobile suspension fortresses, what were the three great families, and they would be wiped out in a snap of his fingers, but the virtual beauty's next words made his wish come to naught.

"Due to the constraints of the energy system, the mobile levitation fortress can only function nearby, and once it exceeds a certain distance, there will be no energy."

Lu Yun was speechless: "Okay, I'm going in!" ”

The virtual beauty smiled and made a gesture of please: "Two please!" I won't bother you both. ”

Feng Xiao's face was full of incredulity: "What's going on?" ”

Lu Yun shook his head, he didn't know what was going on, but there was no doubt that it was a good thing, they could enter and explore.

The two of them quickly entered it, passing through the ten black fortresses to the innermost part of the building.

It was a strange thing, but it seemed to have stopped running, and the two of them didn't know what it was.

In the innermost, the two finally found a small door to the underground, and Lu Yun's spirit had already probed and knew that this was the only passage to the underground here.

Lu Yun opened the small door, and stairs appeared, leading to the depths of the ground.

It seemed that this was the place, and the two of them carefully walked down the stairs all the way, and walked for about ten minutes until they finally came to the underground world.

Like the underground of Xuanyuan City, there are many buildings here, and there are traces of human life, but there is no one inside.

Lu Yun showed doubts: "What about the people in the main line of the Li family?" ”

Feng Xiao shook his head: "I don't know, it's the first time I've come here." ”

The two of them came to the building to inspect and found that there were buildings for living, for studying, and even for cultivation, and all kinds of buildings were complete.

Through careful inspection, he saw that there were still a lot of food and daily necessities left in many buildings, and there was not much dust, indicating that this place was originally inhabited.

Lu Yun roughly estimated through the building that there are not many people in the main line of the Li family, probably only a hundred.

He fell into deep thought, there was a defense system on it, and it was impossible for all of these Li family main veins to leave from above.

If it wasn't for the departure from above, then how could they all be gone? Where the hell did they go?

Lu Yun began to look through the houses carefully, trying to find some clues, even if it was just a few words, but he didn't get anything.

Feng Xiao's face was pale, and he couldn't accept this reality, not only his father, Uncle Li, and the five hundred Praetorian Guards were missing, but even the people who were the main lineage of the Li family were also missing.

The two of them were in the innermost part of the underground world and saw a large square, which made Lu Yun feel shocked.

He quickly ran over and found that this was another Taiji Bagua Array, which was exactly the same as the one under Xuanyuan City, the only difference was that there was nothing on this Taiji Bagua Array.

This made him ponder, why is there this formation here, what is going on?

The main vein of Xuanyuan guards the underground Tai Chi Bagua Array, and the main vein of the Li family also guards the underground Tai Chi Bagua Array, what is the role of the Tai Chi Bagua Array, what are they guarding, is it just this formation?

Feng Xiao was also surprised, she was also the first time to come here, and it was the first time she had seen this Tai Chi Bagua Array.

She asked Lu Yun what it was, and Lu Yun could only shake his head, because he didn't know either.

Lu Yun tried to get close to the Taiji Bagua Array, but he couldn't get close at all, obviously the protection of this Taiji Bagua Array was still very complete.

Thinking that many masters had worked together to break the formation, Lu Yun smiled bitterly and shook his head: "We can't get close." ”

The two fell silent for a while, they came to look for the disappearance of the Tang Dynasty Lord and others, but they didn't seem to have gained, which made them not know what to do next.

At this moment, the ancient characters in the eight directions of the Tai Chi Bagua Array began to light up.

Lu Yun was taken aback, he thought of the situation of the underground Tai Chi Bagua Array in Xuanyuan City, and hurriedly pulled Feng Xiao back and stood in the distance to observe.

The eight symbols of Qian, Kun, Zhen, Xun, Kan, Li, Gen, and Dui all began to light up with a faint light, and kept alternating, and the speed became faster and faster.

The light also changed from dark to bright, and became more and more dazzling, and finally turned into a dazzling halo of constantly flickering, like the scorching sun in the sky, which made it impossible for people to look directly.

The Tai Chi Bagua Array also began to exude terrifying coercion, like mountains, rivers and seas pressing down, making the entire ground shake with it.

Lu Yun and the others were both pale, and they couldn't bear such pressure at all, so they had to retreat quickly.

As the aura of the Tai Chi Bagua Array flickered, a pitch-black circle suddenly appeared in the middle position, like a black hole and a passage.

Lu Yun and the others were shocked, what is this?

At that moment, a figure stumbled out of the black passage.