"Ding! Congratulations, Demon King, you have obtained the resources Fiendish Iron Ore, Resentment Crystal Ore…"
Before he could finish his words, the ground under Demon King Gu Chuan's feet shook violently, as if the entire underground city was shaking.
Sand fell from the stone walls above the underground city like streams, and there were even gravel falling from some places.
Dong!
A piece of rock fell and directly hit the head of the patrolling middle-level skeleton soldier, causing it to fall off its neck and roll on the ground a few times.
The soulfire in the skull throbbed a few times, as if it was feeling puzzled.
Immediately, the middle-level skeleton soldier bent down to pick up the skull on the ground, wiped the dust off it, and then pressed it back onto the cervical vertebra. He continued to patrol with his broken sword.
There were also some walking corpses who were hit by the gravel falling from the stone wall. They fell to the ground and then got up to continue working.
This was the advantage of an undying life form. It was durable.
"Sir, could it be that the Glorious Knights are attacking the Buried City?”The Undead Knight asked in shock.
"No."
Demon King Gu Chuan's cold face could not hide his joy as he said,""There are mineral deposits under my Dungeon. This is great news!”
"Men, assign all the Goblins to dig and mine!”
Demon King Gu Chuan said excitedly.
Fiendish Iron Ore and Grudge Crystals came out from the underground. They came out from the stone walls in various parts of the Buried City.
The dark blue color emitted a misty luster, illuminating the dark and damp underground city.
The rewards continued!
"Ding! Congratulations, Infernal King, the Buried City has expanded by one level!”
"What? The Buried City will expand by one level!？”
Demon King Gu Chuan was stunned for a moment before his face turned wild with joy.
Originally, he still had the walking corpses mine day and night. Now, it seemed that there was no need for that at all.
Rumble…
Another wave of violent tremors shook the earth and mountains.
Then, due to the huge inertia, everyone's feet instantly left the ground because the Buried City suddenly sank a lot!
As the entire Dungeon descended, another Dungeon Maze appeared out of nowhere on top of the Dungeon's foundation!
The area of the underground city had almost doubled.
Demon King Gu Chuan gasped.
The system reward this time was too generous.
It was as if he had received a huge gift for the Buried City and his path to the Demon King after he got on the right track.
"Ding! Congratulations Demon King, you have obtained Intermediate Skeleton Soldier x100, Intermediate Skeleton Archer x50, Intermediate Skeleton Knight x20, Intermediate Trap x10, Intermediate Skeleton Mage x5!”
As the system's voice rang out, a large wave of Summoning Lights lit up.
In the open space in front of Demon King Gu Chuan, there were 100 Intermediate Skeleton Soldiers, then 50 Intermediate Skeleton Archers, followed by Skeleton Knights and so on!
Finally, there was a skeleton mage covered in a tattered black robe.
The magic staffs they held were made of bones.
As for the Skeleton Knights, they were all tall and mighty skeletons, riding warhorses that were also skeletons.
However, be it the skeleton knights or the warhorses they rode, they were all wearing heavy armor, looking ferocious and mighty.
Whoosh!
The newly summoned Intermediate Skeleton Soldiers, Intermediate Skeleton Archers, Intermediate Skeleton Knights, and so on all knelt down in front of Demon King Gu Chuan.
Demon King Gu Chuan was filled with pride and laughed heartily.
This batch of soldiers gifted by the system was much more conscientious than the first batch.
His equipment was not as tattered as before.
Just when Demon King Gu Chuan thought that the system reward was gone, the system's voice sounded again,"Ding! Congratulations, Demon King, you have obtained the construction blueprint-Goblin Research Institute!”
Demon King Gu Chuan's eyes lit up.
Goblin Research Institute?
A construction blueprint appeared in Demon King Gu Chuan's hand.
Demon King Gu Chuan checked the construction requirements of the Gnome Research Institute. Other than a bunch of materials, the most important thing was the need for gnomes!
It was equivalent to a research and development factory.
As for the required materials, some Demon King Gu Chuan had them, and some Demon King Gu Chuan didn't have them. They needed to collect them.
"If it's a goblin, there's one in the Monster Forest. It seems to be in the Mithril Mountains deeper in the Monster Forest.”
Demon King Gu Chuan frowned.
Gnomes were nothing. Those monsters were even weaker than goblins. Demon King Gu Chuan could kidnap as many as he wanted.
The problem was that there was a Mithril Lord in the Mithril Mountains. It was said to be a Lord-tier monster.
Lord-level monsters were on the same level as Grand Cardinals, Grand Magisters, Glorious Knights, and titled battle professions.
It could be said that he was a true powerhouse on the Norland Continent. He could fend off thousands of troops and destroy cities alone.
Therefore, Demon King Gu Chuan did not know how powerful the Mithril Lord was. He wanted to go to the Mithril Mountains to find out more about the Mithril Lord.
As for upgrading the Buried City from Level 3 to Level 4, he needed the Gnome Research Institute, more people, and more vengeful souls.
"It seems that upgrading the Buried City from Level 3 to Level 4 is impossible in a short period of time.”
Luna held Qiao Ya's hand and ran out. However, because Luna was petite, it felt like Qiao Ya was holding Luna's hand.
"Brother, brother, what happened just now?”Luna quickly asked.
When the Buried City " grew " the Fiendish Iron Ore and expanded its area, Luna was shocked.
Qiao Ya was still in shock.
However, Qiao Ya was delighted.
Gu Chuan exited the Demon King's body and looked at Qiao Ya. He said,"I'm sorry to disappoint you. It's not the army of Goode Town attacking my Dungeon.”
Qiao Ya was indeed disappointed.
She thought that the huge movement of the Buried City just now was the magical crystal cannons of Goode Town bombarding the Buried City.
However, after thinking about it carefully, how could Viscount Goode mobilize the magic crystal cannon used to defend the city for a mere priest?
As for the Knight Commander, even an expert like the Knight Commander would not be able to shake the entire Buried City.
After all, the surface area of the Buried City was too big.
Gu Chuan picked up Luna and said,"Let's go and see how our home is doing."”
After accompanying Luna for a while, Gu Chuan prepared to go to the Demon Forest alone to investigate the Lord-tier demon, the Mithril Master!
This book comes from：m.funovel.com。