After walking in the dark for a while, Luther finally couldn't help asking, "Cui Xisi, why did you tell them those?" He looked up at the girl in front of him, and hesitated and spoke again and again. But the boy had no hope of getting an answer from the other party because he was familiar with the other party's personality.

Unexpectedly, Cui Xisi stopped and looked back.

"Don't you think it's too bad," the girl's eyes shining in the dark. "I didn't tell them the truth, but it doesn't matter. The empire will move after the elemental trial, and then the world will be different from what they see. The genius of mortals have turned into dust, but it's a pity that the famous Dragon Alchemist is so indifferent to everyone. I want to defeat him myself."

Luther fell silent. He had some affection for the purses and his group. After all, the Seven Seas Brigade rescued him and Cui Xisi.

"But the other party really won't notice anything," he asked. "You also know that it's the Dragon Alchemist. He might be smarter than we think he can get to this point."

"That doesn't matter, that's the Oshu people's business," Cui Xisi looked at him, "but you, remember not to let go of it."

Luther nodded slightly. What Cui Xisi said just now was absolutely secret for the empire. If the guild knew that they had leaked it to outsiders, or even to the Kaurin-Ishurien people, it would have been a big mess.

But he suddenly realized that this was a kind of trust.

If Cui Xisi hadn't absolutely believed in her, how could she say this in front of outsiders? The boy suddenly became a little nervous and was a little ecstatic. Is this the distance between the two closer?

He is a student of the King of Grey. For the sake of the teacher, the outside world respects him three points, but except for the girl in front of him, he has never had any way to deal with the other party.

At this time, Cui Xisi wanted to say something else, but suddenly closed her mouth.

She looked in one direction with some alertness. "What's wrong?" Luther asked unexpectedly when he saw her expression.

"It's weird," Cui Xisi looked there suspiciously, "It seems that someone is there just now."

"How is that possible, but I didn't see anything." Luther also looked in that direction, but there was nothing left with darkness.

"I don't know," Cui Xisi's tone wasn't quite sure, "I didn't see it either, but my light guide just now responded."

Luther knew that light guides would not lie, but craftsmen were like this. They trusted machinery more than themselves, and became alert in their hearts.

The two stood in the dark for a while.

"That," the light guide had no reaction. In the end, Cui Xisi shook her head in confusion, "Can I get it wrong?"

"Cui Xisi?"

"It's nothing, let's go back first, I hope the battle above is not over yet."

...

Fang Zhu is recycling the last batch of Clockwork Fairies.

The silver shuttle-shaped aircraft gathered its wings and landed gently on his hands. Through a thick layer of gloves, the blade-shaped wings flashed with a metallic luster.

He carefully stroked the little thing and then put it away. The swarm of bees that had just been released lost five in the battle. Although it was a big hit compared to the losses of the Aoshu people, it still made him feel extremely distressed. The cost of his clockwork fairy was much higher than that of ordinary clockwork fairy.

Fortunately, the one released was not the Star of Thorin, otherwise he would be unable to breathe now.

Then he looked up at the spectacular scene ahead - Cui Xisi did not lie. Everyone walked down the rift for less than half an hour and entered a spectacular underground rift. Along the rift, the magnificent scene of the underground world reflected in their vision.

The world under the rift is as deep as that of a world above the ground. Purple crystals grow along the sharp cliffs, hanging down from the top of the rock, like twinkling stars, covering this dark world. The underground world has a different ecology, with tall mushrooms growing, and fluorescent dust under the umbrella covers, and curly glowing ferns, like towering forests to shrubs.

Some strange creatures among the clusters of vegetation, some look like mice, but with colorful furs and a pair of huge eyes, they look a little cute from the outside; there are also insects between fireflies and butterflies, flashing and flying in the dark; and several underground lizards flash in the eyes of everyone.

Many creatures even met square elbows in books and had never seen specimens, let alone the body. He hurriedly took out the notes and recorded them. Xiaoyao glanced at his sketches and couldn't help but take a look.

Various luminous plants and light marrows make the underground world more rays than imagined, just like the forest in the night under the moonlight. Although it is quiet, it is still enough to see things.

Everyone also took off the bulky night vision device they had worn in advance one by one, and they were a little lucky.

They continued to head north, and soon they found a path. The deep and dark rift valley was still at their feet, but the path passed through the rugged rocks like blades. Soon, traces of human buildings appeared around them. The ancient buildings seemed to grow between cliffs, with dark windows and doors. I don’t know how many years have passed. From a distance, their style obviously does not belong to the empire today.

This discovery made everyone excited. "Look at those buildings," Shui Wuming pointed at the buildings with some surprise and said, "Look at their age, they were obviously not built by the imperial people outside. Someone really lived here, and the time was not short, otherwise they would not have to build such a...'city'. Xiaoyao was really guessing it correctly. There is a whole ruin below, which is incredible."

"What did I guess correctly?" Xiaoyao was very dissatisfied and moved his eyes from Fang Yu's notes. "That is a reasonable logical deduction. Not to mention a 100% accuracy, but more than 80% of the possibility still exists."

"Anyway, you're all right, so it's up to you."

"you--"

This chapter is not over, please click on the next page to continue reading! Alisa stood and enjoyed the magnificent scenery of the underground world.

"It's so beautiful," she shone in her eyes. It was the fluorescence of the underground plants in the distance. She couldn't help but exclaim from the bottom of her heart, "When you see such a scenery, you will find nothing behind you."

"Good better," Fang Zhu hurriedly interrupted Miss Nightingale's crow's mouth in his team. That's a lot of money, how could he not care about nothing? "The underground scenery is magnificent, but we are adults, and adults have to choose. The natural scenery is here, and it will not change whether we arrive or not, but we can still change the second result with just a little effort."

"That's right," the Paparals deeply agreed, "As long as there is a good thing, it doesn't matter even if it's a hell."

Alisa couldn't help but roll her eyes on the two guys, "The guy who burns the piano and cooks the crane."

Silvede looked at them with his lips pursed, and couldn't help but smile.

Luo Hao was whispering to Jita: "Can you recognize the origin of those buildings?"

The scholar pushed his glasses, looked at the gray buildings between the cliffs in the distance, and nodded silently, "Those buildings do not look like they belong to our age. Judging from their style, they are more like they were built before the Elkins Dynasty. Look at their doors and windows, today's empires rarely use such styles."

Everyone attracted attention to the words of the scholar Miss, Xiaoyao couldn't help but ask: "Elkins Dynasty?"

"It is the Northern Empire," Jita explained, "The empire's history was long, but except for the oldest era, the dynasties changed relatively stable, and there was only one major turmoil in history, that is, the Northern Empire. The Hagensen dynasty annexed the Elkins dynasty and established a new empire, namely the Northern Empire. The Hagensen family from the north brought a very different northern culture to the empire. The culture and architectural style of the empire we saw after that were very different from the previous era."

When it comes to the Northern Empire, everyone actually knows it. The Northern Empire is a very famous dynasty in the history of the empire. The history of the side dynasty replacing the main trunk and establishing the empire is quite famous, but it is still an internal affairs of the Aoshu people. After that, the Northern Empire has been ruled to this day, and has undergone several changes in the middle, but it has always been dominated by descendants of the Hagensen family.

These buildings came from before the Hargenson Dynasty, so at least seven hundred years ago. Even Kaurin-Ishurien had not been established at that time. The Equin elves and the dwarves were drawing up a covenant. It was an era of dreams between mountains and forests. Humans had just built the earliest cities and settlements on the Kaurin Plain, and the magical civilization was in full swing.

"As such a long time," Xiaoyao looked at the ruins, "Is this city really related to the ancient alchemy we are looking for? Although the great alchemist Ed had already formulated the system of mortal alchemy a thousand years ago, he and his students lived in that era of war. After two or three hundred years, who built such a city here?"

This question was actually a question in Fang Rong's mind. But he shook his head, "Unless there is a city of different eras underground, the imperialists must have found the old tower magic furnace here, but I don't think it's possible. The era when tower magic furnaces were popular was about 800 to 500 years ago. It is not surprising that experimental tower magic furnaces were found in this city established seven hundred years ago."

"That is, a group of alchemists were once inhabited by this underground, and the tower magic furnace was a new thing in that era, which means that these alchemists could access the most cutting-edge alchemy at that time," Xiaoyao speculated, "that is, at least in that era, this underground city had not yet been buried under the dust of history, and it was still related to the outside world at that time."

Fang Yu looked at this guy unexpectedly.

The other party just said that the speculation about underground remains was derived from deduction, and now it seems that it is not a nonsense, at least he agrees with these judgments.

"But that little girl could tell us the location of this ruins just now. If the Empire didn't care about it at all, or they had already turned it upside down and were sure that nothing valuable was left here," Xiaoyao shrugged, "Considering the time when the Nordspitz mine was closed, the Empire found that there must be a long underground here, and I feel that the latter is more likely."

He continued, "So this city should be searched all over the world and outside. Can we really find something in such a place?"

To be honest, Fang Yu couldn't refute this question with certainty, after all, he had never considered it in his heart.

But when he came to this place, he was not just a little lucky. During the Imperial Workshop, no one, including the great alchemist of the Empire, recognized the true mystery of the tower magic furnace. The inheritors of the Sixth Technology Route, the students of Hain Fanmu, left behind a semi-finished product of the Zero Magic furnace, but how could they not leave a single word?

What about other relevant technical information, notes, and other tower magic furnaces? It would be fine if it was just a chance discovery underground in the mine, but there is a ruin here, a city covered in dust. How could the alchemists who lived here leave only one tower magic furnace?

Of course, it is also possible that the Imperials hid other discoveries. But Fang Yu believed that since they could not even recognize the true value of the tower magic furnace that they regarded as treasures, the Imperials would definitely ignore more other details, details that only researchers who are familiar with Zero Crystal, Zero Magic furnace and the Sixth Technology Route would notice.

This chapter is not finished yet, please click on the next page to continue reading the exciting content behind! It is precisely with this mentality that he went deep into the underground for this adventure.

He had even been worried that the tower magic furnace was just a chance, but when he saw this underground ruins, he disappeared. In a huge underground city, he accidentally found a tower magic furnace, which was a coincidence.

But most of these reasons cannot be said. Zero Crystal is still a core secret in the outside world, especially after knowing the Imperial people’s understanding of the sixth and second technical routes, once people guess the Zero Crystal is on him, then the secrets of the Fairy Dragon Knight and Miss Tata are likely to be made public.

Now the Seven Seas Brigade has many enemies. In addition to his real self-protection ability, Fang Yu has decided to keep this secret as if he is a bottle. He even discussed this matter with Tata privately, and the Fairy Miss also agreed.

But the ruins are here, and they just need to search here inside and outside. Fang Yu had a premonition in his darkness. He felt that he would always find something here. "It's not unreasonable," he replied to Xiaoyao, "But we can't come back empty-handed when we get here. Whether to go deeper or not is something that needs to be considered later. In short, let's search here first."

This proposal is quite normal and no one objected. Fang Yu divided the people into several groups. Considering that Luo Wei and the other three had no combat power, he dispersed the three into each group, so that each group could also receive support from craftsmen. Moreover, Luo Wei and the other people were still top alchemists of several major guilds, which could be said to be the best of both worlds.

First of all, it is his group. Considering that his own abilities are relatively comprehensive, he has the least staff. Apart from himself, there are only two people in the ship's officer, the Paparals, and the senior sister Luo Wei, with four people in total. He brought the Paparals with him because of his own reconnaissance ability and his ability to deal with sudden battles is relatively low, and the other is because he is afraid that this guy will make trouble.

In the group, no one else except him can control this guy.

The other two teams are led by Alissa and Luo Hao respectively. Ailisa's team is led by Shui Wuming as the main craftsman. She is also an all-round craftsman and can barely control one or two clockwork fairies for investigation. In addition, Miss May is full of martial arts. Jita, who is the team's think tank, has a wide range of knowledge and can complement Miss Nightingale.

Considering Luo Hao's team, considering Luo Hao's combat power level, equip him with the strongest combat maid in the team. The combination of Xiaoyao and Liu Liyue can also make up for the shortcomings of not having an all-round craftsman. Moreover, Liu Liyue is also a special combat craftsman. As an advisor, Luo Yu is also extremely reliable, and can even be said to be his own side.

Fang Zhu first released the clockwork fairy to take a look at the aerial view of the city above the rift valley, then asked Silweid to draw a map and formulate three routes. He chose the central one, passing through the square in the center of the city, and with some buildings with obvious characteristics. He always felt that there might be more clues on this road.

Therefore, he personally presided over it.

But it is called a city, but this dark and empty ruin has long been gone. It is better to say that it is a broken wall that has been silent after several centuries. The towering and majestic buildings have long collapsed, leaving only low walls, broken turning stones, and even the stones have turned into powder, leaving a piece of dust.

When entering the city, the three teams could even look at each other. The distance between several streets was not too far, and it was difficult to block the view between the broken buildings. The ruins were dark and silent, and sometimes only their rustling footsteps were left. The outer edges were low houses, and there were basically no valuable clues.

And further, the scale of the ruins became larger, and several other teams finally disappeared from sight.

The Paparal people kicked the stones bored, watching the stones rolling across the streets and disappearing under the road, and couldn't help laughing. The treasure underground was not as good as he imagined, and it was even a little boring. Under the broken walls, what was hidden was not golden gold, silver and jewelry, but the so-called "clues".

He watched Fang Zhu walk through the buildings and observed the walls with great enthusiasm, and felt increasingly bored.

“These buildings have a very long history,” Luo Wei explained, “I’m not talking about them themselves, but about the time after the city was abandoned.”

Fang Yu nodded. If this city had been inhabited, it would definitely not be like this. But after the people who were originally staying here left, the city lost its human maintenance and became the current situation.

But the lifespan of the city is also very long, especially in this underground, which is not attacked by wind and rain. This ruin does not seem to have been destroyed by any external force. Then it must have become a scene in a long time. The humans who originally maintained it may have left this place for centuries.

But it is unknown why those people left, whether they were threatened by external factors, or died for unknown reasons. The remains of people were not found in the city, or they had been taken away by the empires. They did find some traces left by the empires after searching. The Aoshu people did not seem to love archaeological relics very much, and the traces they left were mostly quite rough.

Luo Wei frowned when she saw it.

"Senior Sister Luo Wei," Fang Rong asked, "Do you want to look around yourself?"

Luo Wei nodded. She was indeed very interested in this place. She entrusted Fang Yu and her group to bring them here for archaeology, but she was just serving as a guard. Of course, this work cannot be interfered with by others. Although Fang Yu did not have this ability - she thought it would be better to do it by herself.

"I'll let Silvede follow you," Fang Zhu looked at his shipmaster's lady, "Don't be too far away from me, Parker will take care of you outside."

This chapter is not finished yet, please click on the next page to continue reading the exciting content later! In a broad sense, the Fairy Envoy is also a combat craftsman, but everyone knows that if you do not rely on other combat craftsmen, the Fairy Envoy itself has no combat ability. And Silweid is slightly better than Luo Wei. Although her level of gunsman is not high, she can finally have some self-protection ability when encountering danger.

In addition, the Paparals were taking care of each other, as long as the two of them didn't leave too far, there would be no big problems.

Luo Wei followed suit and thanked him before leaving with Silweid.

After Fang Yu saw the two of them turning around and disappearing in the corner of the alley, a silver light suddenly flashed beside him, and Miss Tata, who had not seen for a long time, appeared from him.
To be continued...