Seeing Zhu Zhuqing's chin signal, Ye Lan held the light sword in his hand and walked forward.

When he came to the door, Ye Lan pushed it with his hand, but he didn't expect that with this push, the door opened in response.

？？？

Ye Lan was stunned all of a sudden, this was different from what he imagined, and he thought that it would take a lot of effort to open this door.

Seeing that he pushed open the door so easily, Zhu Zhuqing also felt nervous, staring at the passage behind the door with a wary expression, afraid that something would come out of it.

After waiting for a long time, the imaginary attack did not appear, and the three of them subconsciously breathed a sigh of relief.

No way, this is a military fortress inside the territory of a powerful empire ten thousand years ago, and you can't be too careful. If there were some unknown existences, Ye Lan would not be surprised at all.

Ye Lan observed this gate left and right, only to find that after ten thousand years, the mechanism of the gate had long since failed, and it was no wonder that he opened it so easily.

Behind the door, there is a wide and deep passage, but it is extremely dark inside, with the strength of Ye Lan and Zhu Zhuqing, night vision is naturally not much of a problem, but Lu Xiaoran is a fourteenth-level soul master, and she does not have that ability night vision, this is equivalent to a dark bottomless pit for her.

Considering Lu Xiaoran's feelings, Ye Lan let her release her martial spirit.

"Xiao Ran, you infuse your soul power into the twin swords, try to attract the fire element inside, and let your twin swords ignite the flames, just like your first soul skill."

Lu Xiaoran was a little confused, but she still followed Ye Lan's instructions, and soon, a raging fire ignited on her Qingyue Twin Blades, illuminating the surroundings, but under her control, this flame did not cause a change in the surrounding temperature.

Looking at this scene, Ye Lan nodded with satisfaction.

Very good, a magic version of the torch is formed like this, so that Xiao Ran should not be afraid of the dark.

"Xiao Ran, you did a good job, you just hold your knife, so that the surroundings are not so dark."

"But, Master, wouldn't that be a bit silly? Don't you have a night pearl, why should I light the fire myself. Lu Xiaoran held up his martial soul and said with an innocent face.

"What do you know, being a teacher is exercising your control over your soul power. You need to arrange your soul power reasonably, and you need to be able to achieve the maximum lighting effect with the least amount of soul power. It's a technical job, and you shouldn't underestimate it. Ye Lan said solemnly.

"Oh, I see. Don't worry, Master, I will try my best to meet your requirements. Lu Xiaoran confidently assured.

"Poof." Zhu Zhuqing couldn't hold back for a moment and laughed.

"What are you laughing at?" Ye Lan glared at Zhu Zhuqing angrily.

"It's nothing, I just think of something happy." Zhu Zhuqing said with a smile.

Ye Lan gave Zhu Zhuqing a look and asked her not to expose herself.

Zhu Zhuqing saw Ye Lan's eyes and nodded. This guy is really, thinking about his own apprentices, he doesn't look like a master at all.

After this little episode, Ye Lan and the others took a look at the surrounding environment. Ye Lan and Zhu Zhuqing were surprised to find that all the stones used around the passage were hard bluestone, and they were polished as smooth as ice, and they didn't know how much manpower and material resources were spent at that time.

After walking forward for a few tens of meters, Ye Lan found that along the way, every few meters, there were devices similar to electric lights on the surrounding walls and ceilings.

Ye Lan carefully removed a lamp, and nothing was touched, which also made him breathe a sigh of relief.

Ye Lan carefully studied this lamp and found that it was a bit like a soul guide, and it was a bit like a technological product from his previous life. At the same time, Ye Lan also discovered that there was an unknown device on the lampholder, which may be used to supply energy. It's just that 10,000 years have passed, the energy has long been consumed, and these lamps have become decorations.

What is this technique called? Soul Guide Technology? Just like magic technology in the world of swords and sorcery? Ye Lan muttered in his heart.

Ye Lan put the lamp back in its place and continued to walk forward. Finally, the three of them saw a door on the left side of the passage.

Ye Lan gently pushed open the door, and suddenly, a musty smell came to his face, Zhu Zhuqing and Lu Xiaoran covered their noses and hid aside, thinking to themselves, how could there be such an unpleasant smell in this world.

The whole door was open, and it was as dark as ever!

Ye Lan frowned slightly, stretched out his hand, and suddenly a fresh breeze blew, driving away the unpleasant smell.

This room was quite large, and it was already a quarter of an hour after the three of them had stepped on every inch of this room. In just one process, Ye Lan has been maintaining the Heart Sword Realm to see if there will be anything missed by the naked eye. Unfortunately, no valuable clues were found.

Based on the dilapidated beds and some cabinets in the room, as well as some weathered armor, Ye Lan speculated that this should be the dormitory of the soldiers stationed in the fortress back then.

"Let's go, there's nothing in here." Ye Lan said regretfully.

Then Ye Lan and the three of them leaned forward again, along the way, there were many rooms like the one just now, but again, except for some products of soul guide technology, there was nothing else to discover.

"This is the last room, if we don't find it again, we'll be gone in vain." Ye Lan looked at the door in front of him, and his voice was a little low. It's been a wasted effort for so long, and whoever comes will be unhappy.

However, Ye Lan was still looking forward to this last room. Because the door of this room has a delicate pattern, it is completely different from the previous rooms.

He had a hunch that there would be something he wanted to know.

Ye Lan took a deep breath, and slowly pushed open the door in front of him under the nervous and expectant gazes of Zhu Zhuqing and Lu Xiaoran.

Squeak –

The door was also opened easily, and Ye Lan walked in first.

"Huh?"

Ye Lan was the first to notice the difference here.

It's no longer as dark as the previous room. On the ceiling, there is a still lit lamp, illuminating the entire room, and the light fills the room.

What kind of lamp is this, so powerful, that it can burn for tens of thousands of years? Or is there someone else here who has been powering the lamp?

With this in mind, Ye Lan probed the Heart Sword Realm towards the only light that was on, but the result was that Ye Lan was a little speechless.

Feelings: This is a night pearl the size of a baby's head is covered by a lampshade, and it is not a soul guide lamp at all!

Luxury, loser!

I don't have the luxury of using such a big night pearl to illuminate the room as you do!

Ye Lan commented indignantly.

This room is not very large, but there are a lot of things in it, first large and small boxes, and then some bookshelves with books. There are also some miscellaneous utensils that have corroded out of shape because they have been too old!

Ye Lan glanced around and found that this place was a bit like a study.

Ye Lan was taken aback by his own guess, if this was really a study, then its owner was likely to be the master of the city, and there would probably be something he needed here!

Thinking of this, Ye Lan's breathing became slightly shorter.

Ye Lan's body moved, and he came to the front of one of the bookshelves, and the books here looked like ancient books among ancient books! If you want to find the information you want, it's the best place to start!

Glancing at the bookshelves, Ye Lan raised his eyebrows, he found that he didn't know the material of these bookshelves, but looking at their luster, there was no trace of weathering, and these bookshelves had transparent compartments to prevent the outside environment from affecting the books inside.

Ye Lan carefully took out a book, and found that this book had also been specially treated, whether it was the cover or the pages inside, after 10,000 years, it was still intact, there was no sign of weathering, and the handwriting inside was also very clear. It's a pity that this is a text from 10,000 years ago, and Ye Lan can't understand it at all.

Ye Lan put the books back in their place, and then put all the books into the spatial soul guide along with the bookshelves. The nine-cubic-sized belt obtained by the Western Wilderness Plain should be the first credit!

These books are all ancient books, and there may be secrets from 10,000 years ago, which are very valuable for research; The bookshelf can be immortal for ten thousand years, and it can also protect the immortality of the books inside, which is also a good treasure and has research value.

Pack it all up and take it away!

It doesn't matter if you don't understand it, you can study it slowly in the future.

"Ah Lan, come and see!" Zhu Zhuqing's shout suddenly came from the side.

Ye Lan turned her head to look and found that she and Lu Xiaoran were standing in front of a desk, with a surprised expression on their faces.

Curious, Ye Lan walked quickly to the two of them and followed their gaze towards the desk. At this glance, he was also taken aback, revealing the same expression as Zhu Zhuqing, but what followed was ecstasy!

There's a map on the desk!

A map of the Xilan Empire's defense!

Ye Lan and Zhu Zhuqing glanced at each other, and they both saw excitement and joy in each other's eyes.

It's really hard to find a place to step on iron shoes, and it takes no effort to get it!

With this map, they no longer have to scurry around the desert of death like a headless fly, but can go straight to the Yellow Dragon and find the legendary Lost City!

Like the previous books, the map was made of special materials, and the handwriting patterns are still clear after 10,000 years.

Although Ye Lan couldn't read the handwriting on it, he still understood the drawings.

He saw on the map that each city had a different pattern marking, and Ye Lan quickly found a city with a pattern that was exactly the same as the one on the door of this room, thinking that this was the city where he and the others were now.

Similarly, there is a largest city pattern on the map, and Ye Lan guessed that this should be the Xilan Imperial Capital. After all, it's an internal map, you can't draw other cities bigger than the imperial capital, right? Therefore, this largest city must be the imperial capital.

Thinking of this, Ye Lan hurriedly memorized the route between the two cities.

After making sure that he had memorized it in his mind, Ye Lan hurriedly put away this map, which is very valuable for studying the history of Xilan, and it must be protected!

Explain in advance that this is not theft, but archaeological protection! I did this to admire Xilan's demeanor, hoping to have the opportunity to reappear in the eyes of the world in the future.

Yes, that's right, that's it!