On the other side, listening to the constant construction sounds, Lei Xiao raised his eyebrows slightly and did not wait where he was.

Instead, he took another step and arrived in front of the Guardian Defense Agency.

"Since the upgrade resources required by the Guardian Defense Agency are already sufficient, let's simply adopt a two-pronged approach."

Thinking of this, Lei Xiao waved his hand again, piled a large amount of resources into several hills, and pressed the upgrade button again.

Immediately afterwards, the prompt sound came to Lei Xiao's ears again.

[You consumed stone x150000, iron ore x120000, obsidian x6000, and black magic crystal x200]

[The Guardian Defense Agency is being upgraded to Lv4, please wait...]

The next second, a dazzling colorful light curtain rose, immediately covering the guardian defense mechanism completely.

At this moment, under the dark blue night, two miraculous buildings, one tall and one short, emit colorful lights that complement each other.

While it’s surprising, you can’t help but feel refreshed and happy.

When the other subordinates in the territory saw this scene, their faces were full of surprise, and some even cheered excitedly.

Just like this, accompanied by the constant sound of construction, after a while.

The light curtain shrouded by the guardian defense mechanism and the sound of automatic construction began to weaken.

In just a moment, the familiar voice sounded again.

[Congratulations, your guardian defense mechanism has been upgraded to Lv: 5! 】

Hearing this, Lei Xiao noticed as he looked at the dazzling colorful light curtain, which began to turn into faint light particles, until it disappeared into the vast night.

The upgraded guardian defense mechanism is obviously a whole circle larger than before.

The strange metal patterns inlaid on the surface become brighter and deeper, and the new strange patterns of black crystals become more obvious.

Under the reflection of the two-wheeled bright moon, a clearly visible dark blue cold light was reflected.

And, except for the bottom part that has been turned into a metal structure before.

Even half of the wall has been changed from a stone structure to an all-metal structure, and it looks much stronger.

Nodding with satisfaction, Lei Xiao immediately opened the property bar of the building.

[Guardian Defense Agency Lv: 5]

[Owner: Lei Xiao "ID: 0013076067"]

[Number of Earth Guardians: 2424]

[Number of sky guardians: 88]

[Building Special Effect 1: Guardian Charging Level 5 "Can charge the guardian of the earth (sky), moderately shortening the charging time"]

[Building special effect 2: Guardian creation level 5 "If the guardian of the earth (sky) is destroyed, a new guardian of the earth (sky) can be created (CD: 8h)"]

[Building Special Effect Three: Guardian Optimization Level 5 "When the guardian of the earth (sky) acts, energy consumption is reduced by 20%"]

[Materials required for upgrade: stone x200000, iron ore x150000, obsidian x12000, jet black magic crystal x800]

"The number of Earth Guardians and Sky Guardians has not changed. It seems that the individual strength has increased, right?"

After closing the attribute bar of the building, Lei Xiao's mind moved, and the 9 Earth Guardians and 2 Sky Guardians in the space bracelet appeared in front of him.

In an instant, a dark blue light flashed from bottom to top from the soles of these high-level demon puppets.

In the next second, an aura that was obviously much more powerful than before erupted from all the demon statues and puppets.

Immediately afterwards, Lei Xiao opened the attribute bar of these guardians and found that their strength had indeed increased from level three, one star, to level three, three stars.

"Not bad, not bad. Although the strength of the single unit has increased by two stars, it has not improved too much.

However, when more than 30 people are gathered together, it is very impressive."

He nodded with satisfaction, just when Lei Xiao thought of this.

On the other side, the sound of stacking and cutting gradually subsided until the colorful light curtain completely dissipated.

The third miracle building in the territory was fully displayed in front of Lei Xiao and all his subordinates.
Chapter completed!