Early the next morning, Lu Yun called Zhao Junran, saw Xuanyuan Yutian, and proposed his resignation.

Xuanyuan Yutian persuaded: "Why did Daoyou just come, and he left in a hurry, Xuanyuan City has not yet fulfilled the friendship of the landlord."

Lu Yun said with a smile: "Thank you Xuanyuan God of War, the kid is really in a hurry, and when he has the opportunity in the future, he will definitely come to Xuanyuan City as a guest again."

"Fellow Daoists, don't you want to know what's under Xuanyuan City?" Xuanyuan Yutian asked.

Lu Yun shook his head: "The kid is not interested in these."

Lu Yun left Xuanyuan City and came to the Wu Clan again, informed the Xuanyuan family of the situation, and said goodbye to the Great Elder.

The Great Elder of the Wu Clan also tried hard to persuade him, and even promised to let Lu Yun participate in the underground excavation and see the underground world, but Lu Yun politely refused.

Lu Yun took Zhao Junran to Saddle Town, which was named after the production of saddles, and the two found a small inn to live in.

He struggled to keep himself in full bloom and prepare for the evening's exploration.

In the dead of night, Zhuo Buyan's Yuan Shen came to Lu Yun's room.

"Let's go!"

Lu Yun quietly left the inn through the window, followed Zhuo Buyan's Yuan Shen all the way to the outside of Xuanyuan City, and climbed over the city wall to enter Xuanyuan City.

Under Zhuo Buyan's command, he avoided the bands of guards and came to a dilapidated building in the middle of the city.

"What is this place?"

Zhuo Buyan smiled: "This is a passage to the underground world. ”

Lu Yun was a little dumbfounded: "Immortal Master is sure?" ”

Zhuo Buyan nodded: "The entrance is in the basement." ”

Lu Yun entered the building, searched for a long time, found the basement, pushed open the heavy stone door, and dodged in.

It was pitch black inside, but fortunately, Lu Yun was a monk and was already able to see things at night.

His gaze swept over the place, and for a moment, his face was full of shock.

It's very empty down there, and there are a lot of buildings that are different from the outside, like a city, but it's very dilapidated and dusty everywhere.

Zhuo Buyan explained with a smile: "This is the shelter under Xuanyuan City, and when the catastrophe happened, it sheltered the Terran seeds left behind in Xuanyuan City. ”

"Ever since the Terrans left the Sanctuary, this place has been deserted, which is why it is so dilapidated, as have several other large cities."

"Here's the Xuanyuan Sword?" Lu Yun was puzzled.

Zhuo Buyan shook his head: "Of course not, this is just a shelter, it is considered a basement, and the real underground refers to the floor below the shelter, which should be called the second underground floor, which is already extremely deep." ”

"We need to find a passage to the second underground floor here before we can enter the second underground floor to find the Xuanyuan Sword."

Lu Yun nodded, but he quickly showed a wry smile.

It's a city, and although it's underground, it's not small, and it's hard to find a passage here, if not a needle in a haystack.

"It's so big, how are we going to find it?"

Zhuo Buyan glanced at Lu Yun: "What do you think?" ”

Lu Yun thought for a moment, thought of what Zhuo Buyan said, and his eyes were happy: "Since the Wu Clan and the Xuanyuan Clan have already started exploring, we just need to find a place for them to explore." ”

"The underground passage of the Great Han should be in the palace, then the underground passage of Xuanyuan City is most likely under the city lord's mansion."

Zhuo Buyan nodded: "Not bad!" ”

He pointed in one direction: "The City Lord's Mansion is in the front position. ”

Lu Yun began to cautiously move into the distance, his feet on the dust, making a zizi sound.

After a while, he stopped being cautious, that was not necessary, because he found that there was no one down there.

Thinking about it, this is normal, if you can live on it, who will live this kind of dark life below, not to mention that there is nothing below, and it is impossible for the Xuanyuan family to let someone below.

Along the way, Lu Yun's speed was very fast, and he also saw a lot of strange buildings, which were incompatible with the buildings he knew.

For example, buildings with various special signs, podiums with red crosses, and so on.

It was supposed that he would have felt abrupt, but he felt normal, which meant that he had seen these things a long time ago, but he couldn't remember what they were.

Lu Yun's speed was extremely fast, and in just seven or eight minutes, he came to the location of the City Lord's Mansion that Zhuo Buyan said.

A majestic and tall building appeared in front of him, which should be similar to the Castle Lord's Mansion.

It's just that the door is closed, and Lu Yun was about to step forward to push the door open, but was stopped by Zhuo Buyan.

"Don't act rashly, this is the management body of this shelter, and it's usually very well guarded, and even though three hundred years have passed, it's not sure if the defense system inside is still working."

Lu Yun was puzzled: "Is the defense system very powerful?" Is it more powerful than the immortal master? ”

Zhuo Buyan chuckled: "The things I've seen are already dead things, and I don't know if they're powerful or not, but it is recorded that these things have the power to destroy the world." ”

Lu Yun was shocked: "What is it, it is so powerful?" ”

Zhuo Buyan shook his head: "It is a different system from the Martial Dao Immortal Dao, and it is just as terrifying. ”

Lu Yun smiled bitterly: "Then what should we do?" ”

Zhuo Buyan smiled and said, "Let's go around here, we will definitely find something." ”

Lu Yun nodded, Zhuo Buyan was right, he was not sure about the Xuanyuan family, but the Wu clan must have entered from here.

Since you pass through here, you will definitely leave traces, and you only need to follow the road you have traveled to ensure safety and find your destination.

Lu Yun began to circle around the building, and on the back he clearly found traces of footprints on the ground.

There is also a small door in the building that has been opened, and it seems that the Witches entered through here.

Lu Yun followed the footprints, passed through the door, and saw the situation inside.

This should be considered a backyard, with a rockery in the courtyard, and even a pond, and some nurseries next to it, but unfortunately they are all deserted now.

In addition to these, around the building, there are also small platforms, in front of which there are pitch-black pipes, and in the distance there are several brown humanoid monsters, but they seem to be dead and motionless.

Zhuo Buyan breathed a sigh of relief: "It seems that everything has failed, so I can rest assured." ”

Lu Yun nodded: "If these machine guns and 50 caliber guns are in good condition, they are indeed very powerful, but now they are rusty, and the robots have long run out of energy, so there is no threat at all, and it is safe here." ”

Zhuo Buyan was stunned, and Lu Yun also suddenly came to his senses, and he smiled bitterly: "I don't know what's going on, so I naturally know this." ”

Zhuo Buyan said in a deep voice: "I am now more and more sure that you are Zhuo Yu, the ancestor of my Zhuo family." ”

Lu Yun shook his head, what does it matter if it is or not, he has now lost many memories.

"Let's go!"

The two of them followed the traces left by the Wu clan, shuttled through the building, and also saw many things.

The building is worthy of being a governing body, with many functional rooms, as well as a library and archives.

The two had the heart to explore, but considering the urgency of time, they could only shake their heads and give up.

Zhuo Buyan sighed: "The Xuanyuan family is really a loser, throwing so many good things here, let time erode them. ”

Eventually, the two of them went to a large room on the lowest floor of the building, where they found a staircase passage in the middle.

Lu Yun was surprised, this was the passage to the third layer.