Information prompts also appeared in Tang Xiaofan's mind at the right time...

[Congratulations, Lord of the Castle! Your black technology castle has been upgraded to an intermediate main city, the territory directly under the castle has been expanded to 200 kilometers, and the castle's sphere of influence has been increased to 2,000 kilometers!]

[The defense value of Castle Heart increases tenfold! 】

[Your black technology castle has greatly increased its influence and reputation in the Gods and Demons Continent! 】

[Special reminder 1: The forest giant kingdom’s hatred value for your black technology castle has been greatly increased]

[Special reminder 2: The hatred value of Dragon Nest against your black technology castle has been greatly increased]

"A direct castle territory with a diameter of two hundred kilometers!"

Tang Xiaofan took a deep breath,

This range is really too big! With his eyesight, he can't see the end, nor can he see the city wall, because the distance is too far.

What is the direct territory of the castle? It is the area surrounded by the walls of the black technology castle. In this area, Tang Xiaofan can build a large number of castle buildings at will.

The area within a thousand kilometers in diameter outside the castle wall belongs to his castle's sphere of influence. Invading this area is equivalent to becoming an enemy of his castle's influence.

"Such a large direct territory!"

"It's not that easy to defend!"

With the size of Tang Xiaofan's current castle army, it would be very difficult to defend a city wall with a diameter of two hundred kilometers.

After all, the perimeter of the city wall is more than 800 kilometers.

The number of troops under his command is only over 100,000, including those in the castle.

Even if they were all allocated to the city wall, it would be equivalent to arranging more than a hundred people per kilometer, more than a hundred people to guard one kilometer of the city wall.

This is very exaggerated! A castle territory as big as Tang Xiaofan's would need at least a hundred thousand troops and millions of castle citizens to be considered normal.

It's a pity that Tang Xiaofan's development speed is too fast.

The castle's population growth rate cannot keep up with the castle's upgrade speed.

This also resulted in the exaggerated size of his castle territory, but the population of the castle was pitifully small.

Although compared to other castle lords, the number of his castle troops is already very large, but when placed in such a large territory, the number of personnel will appear sparse.

It’s not just the population that’s sparse.

There are also very few buildings in the castle.

Except for some buildings around the main castle, we reached a few kilometers away and extended to the city wall a hundred miles away. In this area, there was a vast white open space. It can be said that except for floor tiles, there were floor tiles. There are no two things.

This is definitely not possible. How does such a castle look like a main city? It looks more like a tribe.

Tang Xiaofan turned to look at Olivia, the spirit of the elf mother tree beside him.

Inform her of the castle's problems,

After hearing this, Olivia thought for a while and said, "Lord, how about moving all the elves from our tribe and the goblins from the underground world?"

In the elf tribe located more than a hundred kilometers away, there are about three to four thousand natural elves. They were all bred by Olivia and are aborigines of the Gods and Demons Continent.

As for the underground world,

A goblin kingdom, plus a large goblin tribe,

There are approximately 20,000 goblins in total.

If all the elves and goblins are moved here, the population of Tang Xiaofan's castle will exceed 130,000.

In addition, a group of dwarves can be moved from the dwarf kingdom to the black technology castle.

In this way, the population of the Black Technology Castle can reach about 140,000.

In this way, the huge black technology castle will not look so empty, and the defensive power will be stronger.

Tang Xiaofan shook his head and did not agree.

After thinking for a moment, he said: "I have issued an order before that non-farmers are not allowed to live in the inner city."

"My family of farmers will continue to expand in the future, reaching at least tens of millions of people."

"The current urban area is not enough for future development. So there is no rush."

"As for the elves, they should develop in their own territory. It will also be an important city for our black technology dynasty in the future. We cannot give up easily."

Hearing Tang Xiaofan's words, a sweet smile suddenly appeared on Olivia's cheeks. It was a bit regretful that she could not live in the core area of ​​the Black Technology Castle.

But Tang Xiaofan's arrangement for the elf tribe shows that their elves have a high status in Tang Xiaofan's heart.

Although it is not as good as the farmer clan, it is far stronger than other races, which is enough.

Tang Xiaofan did what he thought of and hired Nong Yi to continue expanding the residential area and entertainment living area.

Because now the entire black technology castle is a military-focused city.

Moreover, all people’s livelihoods are automatically transformed through factories.

There is no need for too many industrial workers at all.

Therefore, the main living needs are sleeping, eating and playing, so the entire city is divided into different sections according to the living gathering areas. Each section contains a series of functions such as eating, drinking, playing, living, and housing.

These are the large-scale venues currently being built that have become the city’s landmark buildings, such as large basketball venues, rugby stadiums, various cinemas, etc.

Planning is relatively simple, and in terms of transportation, driverless trams and rail transportation conveniently solve the travel problem.

Therefore, although a city of 100,000 people is busy, it is not chaotic at all.

Everyone is living and working step by step and in an orderly manner.

Then, Tang Xiaofan took out the drawings obtained after the castle army captured the dwarf kingdom.

He wanted to see if there were any drawings of the city wall.

If not, go to the trading channel and buy a few. Anyway, he has incredible resources now, so buying a few architectural drawings is nothing.

He took inventory and found that there were more than seventy drawings in total, all of which were unidentified drawings.

He immediately identified it without hesitation, and at the same time he checked the upgraded information of the black technology castle...

【Black Technology Castle】

[Current level, intermediate main city]

[Special buildings: Farmer Factory, Elf Mother Tree, Space Teleportation Magic Array, Light Monastery]

[Upgrade requirements: 7 million units of wood, 5 million units of stone, and 2 million units of refined iron. 】

[Next level: Advanced main city]

[Current status: invincible]

"The next level, the castle is upgraded to a high-end main city!"

"What I am short of now is wood and stone. The wood is missing by more than 6 million units, and the stone is still missing by more than 2 million units. As for fine iron, I have more than 4.3 million units, and the upgrade requirements have been met!"

"That is to say,"

"As long as the wood and stone meet the upgrade requirements,"

"My black technology castle can be upgraded again!"

Tang Xiaofan grinned, and then turned off the castle's information frame.

Then he took another look at his existing soul stone reserves.

1,292,185 soul stones, "Get rid of the soul stones I previously reserved."

"This time I captured the dwarf kingdom, and I harvested a total of about 140,000 soul stones! This kind of harvest far exceeds when I captured the goblin kingdom."

"Sure enough, the dwarf kingdom is much richer than the goblin kingdom!"

"And, I can upgrade the farmer's factory to level ten!"

Originally, Tang Xiaofan was not planning to upgrade the farmer's factory before the arrival of the alliance army.

Because he was worried that there were not enough soul stones to allow Sky City to fire as much as it wanted.

But now he has nearly 1.37 million soul stones in reserve.

Even if he upgrades a million soul stones, he still has 300,000 soul stones left.

And he believes that the Sky City that has been transformed will not be used to the extent that he consumes soul stones, and he will be able to obtain more soul stones in the future.

That is to say,

At that time, even if he consumes a large amount of soul stones to upgrade the farmer's factory, it will not matter. It will not affect the war against the Castle Alliance army.

"No rush!"

"There is still time to continue stocking up on soul stones."