…

"Wow, what happened?!"

Three days later, Liu Xingxing returned from treasure hunting and pointed at the Fortress of the Undead and screamed. He had only been away for a few days, but the fortress had become unrecognizable to him.

The original location of the main building of the undead was shrouded in black fog, and the internal situation could not be seen clearly. The sounds of clicking and clanging were endless, as if a large construction site was under construction.

Not far from the main building of the undead, there is a giant black building that looks like a pyramid. Its height is even higher than the previous main building of the undead.

Liu Xingxing knew that Li Ziyu was building a large cemetery and asked Li Ziyu about it at the time, but he did not expect the cemetery to be so big.

"Boss, have you created a wonder?" Liu Xingxing followed Li Ziyu to the cemetery, looked up at the tall building, and asked in a strange tone.

"Can creating wonders lead to victory directly? What are you thinking about every day?" Li Ziyu patted Liu Xingxing's head, took two steps forward, and a portal opened.

"Cool! Are there treasures in here?" Liu Xingxing's eyes lit up when he saw the portal. A pyramid? Could there be mummies or various gold products inside? This is a great place that treasure hunters cannot miss.

"I built this and I'm still alive. Do you think there will be any treasures here?" Li Ziyu said helplessly while looking at Liu Xingxing who was in a treasure hunting frenzy.

Liu Xingxing scratched his head embarrassedly and followed Li Ziyu into the cemetery.

…

"The fortress has been upgraded?"

Three days later, Zhang Peng came back. Looking at the main building shrouded in black fog, he immediately understood and asked in surprise.

Li Ziyu nodded. Zhang Peng's reaction was much better than Liu Xingxing's. He wasn't as childish as that guy.

That's right, we are all in a magical world, so there is no need to be so surprised.

"Let's go and take a look at my cemetery first." Li Ziyu pointed to the black pyramid and said.

"Oh? That's the cemetery? It's pretty cool." Zhang Peng looked at the cemetery and raised his eyebrows. It was very different from the cemetery in his mind. The black pyramid was too calm and solemn, and there was no such scary feeling.

When Liu Xingxing and Zhang Peng came back this time, they were attracted by the upgrade of the fortress and simply did not go out again. Every day they were looking forward to seeing what the fortress would look like after the upgrade.

The three of them returned to their days of chatting and checking battle reports in the chat channel. They felt comfortable and leisurely. Although Li Ziyu had said that it would take a few days to upgrade, both of them felt that sooner or later they would have to upgrade too and they had to gain some experience, which made Li Ziyu laugh and cry.

What experience can be learned from this? Not to mention that they control different races, the upgrade is fully automatic. You don’t need to worry about anything, so what experience can you learn?

But in fact, he also understood that the two were worried. After the fortress was upgraded to a fortress, Li Ziyu's main building could not be used, and they were afraid that something might go wrong.

Whether it is treasure hunting or opening up an underground passage, a few days will not make a difference, so just stay by Li Ziyu's side, maybe he can help at the critical moment.

The last four days of the upgrade went smoothly without any unexpected incidents and passed in the blink of an eye.

As soon as the sun set that day, Liu Xingxing habitually looked out and exclaimed, "Boss, there's a change!"

[Ding! Friendly reminder: Your fortress has been upgraded to a fortress, and the fortress's main building has been completed. The main building has resumed normal use.]

【Please confirm the upgrade in time! 】

【Confirm upgrade: Yes\/No】

[For more upgrade information, please refer to the system documentation.]

Just as Liu Xingxing exclaimed, Li Ziyu also received a system message. He closed the battle report he was reading, jumped up, ran to Liu Xingxing, and looked towards the main building. Zhang Peng also came over when he saw this.

After being upgraded to a fortress, the main building grew again, soaring from the original thirty meters to more than fifty meters in height. The outer wall originally built with bones was turned into a black brick and stone outer wall, which looked the same as the bricks and stones in the cemetery. It was much stronger than before, and its appearance looked more and more like a castle.

It looks better and better, but why did the color change? It doesn't seem harmonious. The surrounding buildings are all white, but the large cemetery and the main building are black. It feels a bit out of place. Li Ziyu commented in his heart, and suddenly remembered the system prompt to confirm the upgrade. He quickly opened the system and clicked "Yes".

As he confirmed the upgrade, something strange happened.

First, there was the bone plate platform. The bone plates flipped one by one, rising and falling like scales. After flipping, the bone plates were quickly stained with a layer of black, shiny and oily, which matched the color of the cemetery and the main building.

The mutation of the bone plates was just the beginning. The black color began to spread, and all the skeleton undead buildings were quickly changing color, from white to black, and the skeletons on the buildings were also changing and reorganizing, turning into pieces of black bone bricks and stones, and re-forming new buildings.

Wow, they're not just renovating the main building, they're renovating my entire mobile fortress?

Liu Xingxing and Zhang Peng stared with their eyes wide open. This scene was even more impressive than the blockbuster movies they had seen in their previous lives. The Tauren of Tab below stared at everything around them in amazement. They didn't know what was going on, but they weren't too worried.

It's normal for the undead to make some noise. We can just watch the fun.

The Tauren of Tabu were no longer afraid of the undead, and they were used to the undead causing trouble every now and then. However, this time the noise was a bit big, so they gathered together to watch the show.

When all the buildings turned black, new changes occurred. The black color spread to the edge of the bone plate platform and continued to extend outward, constantly expanding the area of ​​the platform. When the area expansion ended, black bricks continued to fall from the void, stacked upwards, and arranged themselves neatly.

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