Before the Undead Legion set out on the expedition, Si certainly thought about losing.

It's just that this time, when it was clear that the entire Undead Empire had any remaining strength, the army of the undead retreated.

This was ordered by the Emperor of the Dead himself, and no one dared to touch the mold.

Si was naturally the same, but what he didn't expect was that the Undead Emperor would be much colder to him after he returned.

If you think about it carefully, it is understandable that it was he who gave advice to the Emperor of the Dead and planned this action.

Failed, and it seems reasonable to get snubbed?

But it was hard not to think about what he had learned about what Ye Sheng had done in the Eugilis Empire.

"Did he find out?"

In the Undead Empire, he has always been careful to hide behind his back, and he can know in advance about some players who have infiltrated the Undead Empire, but he knows these players, and these players don't know about his existence.

So he thought about it for a moment and put this possibility aside.

Maybe it's something that was struck......

Si immediately understood, but even if he knew, what was the use, the decision of the Undead Emperor could not be influenced by him.

…………

The continuous clouds were undulating and intertwined like mountains, and Ye Sheng felt particularly novel when he stepped on them.

This is the Castle in the Sky.

Using the Silver Key that Pisbill had given him, he traveled through time and space to this location.

The distance between the fifth order required by Pisbill was naturally 108,000 miles, and at the moment he was only level 83, and after entering the fourth order, he could be regarded as embarking on the path of legend, which was also the basis for him to come to Sky City.

The legendary Castle in the Sky is a mechanical world created by goblins, but as history progresses, the secrets of the Castle in the Sky have been buried in the dust.

It can be said that Pisbil really gave him a big gift, and in Guchios's memory, Ye Sheng knew that there would be an opportunity for him to become a fifth-order in Sky City.

Returning to this ethereal cloud, Ye Sheng rode his pet and flew for a while before noticing the buildings that were slowly becoming clear in front of him.

It was indeed a city.

I can't forget the edge of the city just with the naked eye, and Ye Sheng's heart is beating very fast.

Compared to the previous dreamlike Nao Castle, the Sky City here is definitely a real secret place.

That is, everything is on your own here.

What is the meaning of opening up the wasteland, everything in front of you, pack and take it away, and continue next time if you can't take it away.

The exterior of this city is dazzling in the sunlight, because it was originally made of metal, turning one gear after another, and the steel shell with a very modern atmosphere, made Ye Sheng feel that he had suddenly entered the future twenty-third century.

And such a huge and magnificent building was completely the work of a group of short goblins, which made Ye Sheng have to sigh at the magic of the creator.

It has given great strength to the tall races, and wisdom to the dwarf races.

It's hard to say that a drink and a peck are not a certainty.

The city's giant gate is still an arch, and if you don't have mounts or can fly, this gate will become the first level to stop the invaders.

Fortunately, Ye Sheng has a mount.

Beyond this gate, Ye Sheng was finally able to check the situation inside the city.

The city made of steel and iron bones is silent at the moment, reminiscent of the persecution of goblins in history, this city in the sky is obviously a residence of goblins, but because it is too eye-catching, it is not easy for goblins to migrate and take refuge.

So in the end, the city that was made with great effort became an empty city, which made Ye Sheng feel embarrassed.

The whole city was too big, and Ye Sheng couldn't open it to every household, so he just looked for special buildings to explore according to the shape and geographical location of the building.

This was really a huge project, and after a few more days, Ye Sheng couldn't stand it anymore, and finally summoned the people of Ash Feather to enter here.

Everyone spread out and explored the entire city, relying on the team channel to communicate.

In this way, after a month of hard work, Ye Sheng and the others finally pieced together a topographic map of the Sky City in their minds.

"Here...... It should be the power core of Sky City, since Sky City can float in mid-air, and it has not been discovered or fallen for so long, there must be a secret here. Hara pointed to the left side of Sky Castle and said calmly.

"I've also been to see this place, it's not easy to enter, the terrain inside is very complicated, and there is also the defense mechanism of Sky City itself." Ghost Touch shook his head, apparently at a loss for the place.

The rest of the people also talked about their discoveries, and basically there was nothing else worth exploring except for the castle lord's mansion in the sky city, weapons depots, treasure vaults and the like.

"Wait, we've been here for so long, and we haven't seen a robot." Pie carefully discovered one thing and said suddenly.

"yes, robots, that's a problem." Lou Zhi said without nutrition, he had only passed the trial of the Ash Feather not long ago, and he had been happy for a long time, and this time the Sky City was short of people, and naturally came.

Spark Liaoyuan pursed his lips: "Why do you want to do so much, just go into the core and take a look." ”

After the invasion of the undead, the original members of the old Ash Feather came to the Eulgis Empire through means.

Ye Sheng was also a little moved in his heart, he knew that this was tantamount to changing the household registration in the game, and the trouble in the middle could not be explained in one or two sentences.

"Then you go." Xia Worm Yubing rolled his eyes, his relationship with Spark Rebellion had always been bad.

Except for the two of them, the other members of Ash Feather had not completed the formalities of migration, so they did not come this time.

"We're going to enter the power core of Sky City at the end."

The quarrel between the two did not affect Ye Sheng, and then he made a decision.

The city lord's mansion was also empty, and they finally found a secret door, but there was nothing inside.

After the excitement faded and he walked out after going around in a circle.

"These fleeing goblins are very thorough, and there will be nothing left in the next few places, right?" Hei Luo muttered.

This may not only be there, but it is not small, but the members of Ash Feather are still unwilling to make it to the arsenal, but they have made additional discoveries.

Small objects, easy to take away, are not left, but some large robots and mechanical arms are left.

However, before they could be pleasantly surprised, bad news came.

"These ...... It seems that we can't pretend either. ”

The ghost face immediately used the space backpack, only to be followed by a cold system sound.

[System prompt: This item is too large to fit in the backpack.] 】

Next, they come to a place other than the final power core, and they all get a general ending.