With the death of the last Hydra member, the prompt that the system's mission was completed rang in his ears.

Xiao Lin caused an accident, and the fire spread in the chemical factory, and it was not long before the raging fire engulfed all the mutilated corpses and the entire factory.

He opened the door of death and returned to the villa, where he saw Wanda constructing a building out of the red mist of chaos magic, which looked like Naxxramas.

After she stopped, Xiao Lin asked, "Do you understand the Sky City construction technique in the Knowledge Crystal?" ”

"Yes, we can start building cities at any time, we just need a lot of materials and a lot of items I've never heard of," Wanda said. ”

"Materials are not a problem, tomorrow we will start building the new X Academy right away." Xiao Lin is in a good mood, and as for the construction workers, he can summon his army of the undead.

The next day, Kim prepared them with a private jet with plenty of fuel, avoided various military bases, and flew all the way to Antarctica.

Seeing that a thick ice field appeared in front of him, and there were no people in a radius of thousands of miles, Xiao Lin said to the driver: "That's it, stop." ”

After the plane stopped here, Xiao Lin let the pilot go back, the climate in Antarctica at this time was extremely cold, but it was no big problem for the two people who arrived.

Looking at the white expanse, Wanda asked suspiciously, "You want to start building a city here?" Where are the materials and the workers? ”

At this time, only Wanda and Xiao Lin were here, and in this deserted place, she didn't know where Xiao Lin was going to find materials and construction workers.

Xiao Lin didn't explain, he came to an open place, exchanged the items in the system store, and suddenly a large number of materials suddenly appeared on the ice field.

Black Iron Ore, Mithril Ore, Saron Iron Ore, Frozen Orb, Obsidian Mine, etc., have piled up this place into a small mountain, but this is only part of the story, and it is not enough to build a city.

"This!?" Wanda's mouth opened wide, she didn't understand where all this came from.

"Now let's get started."

Building a city is not something that can be built in a short period of time, it just so happened that the teleportation sign of X Academy was destroyed in the past, and for convenience, Xiao Lin set up one here, and he may need to stay here for a long time.

Frostmourn was stuck in the icefield, a huge magic circle formed on the ground, thousands of undead skeletons passed out of the hell plane, and then the souls in the magic sword flew into those skeletons, forming blue soul fire in their eye sockets, these are skeleton workers, they are good at rough work in the undead army.

Under Xiao Lin's command, the skeleton workers moved the ore and threw it into the melting pot that Xiao Lin had exchanged for smelting.

All this in front of her made her incomprehensible, Wanda was a little stunned for a while, and it wasn't until Xiao Lin yelled a few words at her that she came back to her senses.

"Wanda, what are we going to do next?"

Wanda floated to the pile of materials: "Now let's make the chassis of Sky City first, I need to carve a floating circle on it." ”

As Wanda completed the huge floating circle on the chassis, it was an incomparably complex rune, and after activation, the foundation of this sky city slowly floated.

Even with the busyness of a few thousand undead workers, it took Xiao Lin and Wanda months to build this massive sky city.

When he saw the city slowly floating over Antarctica, Xiao Lin had a great sense of accomplishment, this is his own city.

In order for the city not to be shot down in this dangerous world, Xiao Lin almost spent his points and exchanged them for dozens of magic cannons, which were all over the sky city.

Of course, there is still the last reflective matte system that needs to be installed.

"Karlrut." Xiao Lin traveled to Azeroth Tech and found General Carl Lut who was collecting various intelligence messages from his subordinates.

Although their technology is far superior to that of Earth, they are now only a group of soldiers and generals on Earth, and they have only mastered some of the most basic technologies, and the Reflective Masking System is one of them.

"What's the matter, Mr. Xiao." He had been staying here all this time, but he had only received a small number of elemental energy blocks, and he was still a lot short of activating his fleet, which made him a little dissatisfied.

"I need you to help me install a reflective matte system for my Sky City."

"Okay." He didn't have any goals recently, anyway, he also wanted to see what the Sky City that Xiao Lin was talking about was like.

When he passed through the door of death and came to the Antarctic continent, he opened his mouth in surprise to see a huge pyramid-like structure floating in the air, with huge skulls on all four corners, which was the outlet for the undead scourge of the world of Azeroth to release the plague of death, which was also built by Wanda.

The city in the sky cast a large shadow on the ground, and he didn't see the flames from the power engine, perhaps with an anti-gravity engine on it, but it was difficult to do with the current technology of humans.

Even the S.H.I.E.L.D. aerospace carrier under construction needs four huge engines paired with anti-gravity engines to stay in the air for long periods of time.

It took another month to complete the stealth system on the city.

It had been a few years since General Karlrut came to Earth, and for the first time, he felt that this planet was not simple, perhaps not as advanced as theirs, but far superior to them in some mysterious powers.

During this time, he also calmed down, with his current strength, even if he found the queen, he would not be able to deal with the Kree who were becoming more and more powerful, maybe they needed more in-depth cooperation to fulfill their dreams for themselves.

……

The newly built X Academy has five areas, a supernatural training ground, a residential area, a research center, a storage room, and a control center.

"Wow! Principal, is this our new school? It's a lot better than before! ”

After the students came out of the teleportation circle, they all ran with excitement when they saw the empty campus in front of them, the city is enough to accommodate tens of thousands of people to live and study, and now there are only more than sixty people here.

"Whew!"

Xiao Lin felt a breeze blowing in front of him, and seemed to see a figure flashing in front of him, and he saw Pietro asked in surprise: "Lin, is this the city that you and Wanda built during this time?" It looks so big, and it seems to be floating in the air. ”

He said with some pride: "That's right, this is the city in the sky, the city hidden in the sky, that is, our X Academy, and I will add many new devices here in the future." ”

Xiao Lin didn't want to let those ordinary people enter this new X Academy this time, at least for now, he wanted to hide it.