In that rotating three-dimensional map, the entire Black Iron Fortress has changed its appearance, the land is ten times larger than it is now, and the ocean has never appeared, just a casual look will make people's blood boil.

This is my space, this is the land that I have worked hard to accumulate bit by bit, Zhang Tie said to himself, an indescribable sense of pride surged in his heart, in addition to the appearance of land and sea, the sacred mountain in the Black Iron Castle, that is, where Zhang Tie is now, suddenly rose to tens of thousands of meters high, more majestic and majestic, and with some mysterious and ethereal atmosphere.

Zhang Tie saw that in the sky in the three-dimensional map, there were actually a few more white clouds.

"Ah, there's a cloud, what's going on?" Zhang Tie asked Heller.

"With the expansion of the space area of the Black Iron Castle, the natural circulation system of this space will also slowly appear, this cloud is just the beginning, if this space can continue to expand in the future, there will be more complex and three-dimensional climate types to adapt to the survival of various creatures."

"Will it rain in these clouds?"

"Yes or no!" Heller replied vaguely.

"Ah, what do you mean?"

"I mean in this space, if you want it to rain, it will rain, if you don't want it, it won't, this qiē is controlled by the lord of the castle!"

Zhang Tie nodded, indicating that he understood, the weather was indeed magical, but if it was placed in the Black Iron Castle, it would be commonplace, and Zhang Tie would not be surprised.

"How many people can be fed by this newly expanded land?"

"The newly created land is very fertile, and the main food crops can grow three crops a year. If this land is fully utilized, it could feed more than 2 million people! ”

"More than 3 million people?" Zhang Tie frowned slightly and thought about it, then stretched out his hand to operate in the three-dimensional diagram. "The area of the ocean is too large, let's cancel it first, turn it all into land, let the land area increase as much as possible, and at the same time, in this land, there will be a few more inland freshwater lakes, and there should be as many natural river systems as possible. The land on both sides of the bank can be irrigated, and the premise is that it is suitable for human habitation to the greatest extent and can accommodate more people to survive here! ”

Under the manipulation of Zhang Tie. The ocean vanished, and the land area expanded by a quarter, and there were several more lakes and rivers in the land.

As soon as Heller saw Zhang Tie's changes, he instantly understood what Zhang Tie meant. "Lord Castle, is this preparing for more people to be stationed in the Black Iron Castle in the future?"

Zhang Tie nodded. This holy war has only started for a few years, and countless people have already been displaced, and in the future, this holy war will be even more cruel, Zhang Tie doesn't know what the final result of this holy war will be, but if he has the ability, he wants to make more preparations for the future as much as possible, here. It can be a sacred refuge and give more people a chance to survive. Far from it. Let's just say that the Ice and Snow Wasteland, as a lonely enclave in the Blackson Terran Corridor, if the entire Blackson Terran Corridor falls, Zhang Tie doesn't know how long the Ice and Snow Wasteland can last, if one day the Ice and Snow Wasteland is forced into a desperate situation, then, as long as there is himself, as long as there is this Black Iron Castle, he can transfer all the people who follow him in the Ice and Snow Wasteland to the Black Iron Castle and run away. This method seems a little irresponsible and lazy, but Zhang Tie knows that in the holy war, letting people live is the most important thing.

After understanding Zhang Tie's train of thought, Heller thought about it, and then started to move, and after a while, the entire three-dimensional map was adjusted to about the same, and then Heller pulled his hand, and the ground area of the entire land suddenly expanded to more than 4,000 square kilometers like a big pie.

"Since the lord of the castle wants to accommodate as many people as possible here, then, the newly generated land of the Black Iron Castle does not need to be so thick, according to the previous plan, the thickness of the land and rock layer of the Black Iron Castle is 800 meters, after adjustment, the thickness of the land and rock layer of the Black Iron Castle will become two hundred meters, the land area can increase a lot, and the population that the entire Black Iron Castle can accommodate and feed is more than 10 million."

Zhang Tie slapped his head vigorously, how could he forget this.

"Doesn't that make a difference?"

"There is no impact, these people basically live on the surface, if you only think about survival, the depth of the surface of 200 meters is enough, if the lord of the castle is still not satisfied, the thickness of 20 meters is fine, anyway, every qiē here is carried in this space, as long as there is such a layer of soil on the ground, plants and food can be grown!"

20 meters thick? Zhang Tie rubbed his face, it was really like rolling dough on the panel, although that thickness would not have any effect on the Black Iron Castle, but it always felt weird - a guy could dig the ground in a few days with a hoe? This is also a little thinner, where people live, it is always better to be a little more steady, forget it, the new land area is 200 meters thick, so that people can survive, and thick and steady, if you need to find a way to thicken it in the future. Anyway, there is no such urgent need here now.

By the way, there's one more question.

"Can you let the Black Iron Castle give birth to veins this time?" Zhang Tie asked Heller with hope.

"The Black Iron Castle has the ability to generate ore veins, it is a high-level ability, at this stage, the price it needs to pay is too great, and it will cost a lot of merit and aura values to generate a small low-level ore vein at will, and there are some other prerequisites, so I don't build the Lord of Yì Castle to use this ability now."

Zhang Tie thought for a moment and asked Heller a question, "Then with the current merit value, aura value, and basic energy reserve level of the Black Iron Castle, if you put all of them into the formation of an ore vein, what kind of level will that ore vein be?" ”

"If all the current resources of the Black Iron Castle are invested all at once, because of the influence of the barrel effect, after all the merit points are exhausted, the Castle Lord can obtain a pocket-sized, low-grade ordinary iron ore with a total ore reserve of less than 80,000 tons in the Black Iron Castle, and the mineral template of this iron ore comes from the low-grade waste iron ore that the Castle Lord brought into the Black Iron Castle when he increased the basic energy reserves for the Black Iron Castle during the Wolf Valley Trial! At the same time, after completing the generation of iron ore this time, because the merit value is exhausted, most of the aura value is consumed, although there is still a large amount of basic energy reserves left, but the Black Iron Fortress will no longer be able to complete this space and terrain transformation. ”

Heller's words suddenly made Zhang Tie sober up, and also made Zhang Tie take a breath of cold air, I didn't expect that it would be so difficult to let the Black Iron Fort naturally generate ore veins, and the price required would be so great, but after thinking about it carefully, Zhang Tie understood, if it was so easy to let the Black Iron Fort generate ore veins, then, if he let the Black Iron Fort generate some high-grade gold ore, gem ore or crystal ore at will, then wouldn't it be easy for him to become rich?

"So, I want the Black Iron Ciep to generate some veins now, but that's impossible? Is there any other way to do this? ”

"There are two ways for the veins of the Black Iron Castle to come from, the first way is the first way, the castle lord provides the corresponding resources, and after the conditions are met, the Black Iron Castle is designated to generate a certain ore vein, and the second way is the ore veins randomly generated by the Black Iron Castle after completing the spatial and terrain expansion, if the sea or land area generated by the Black Iron Castle at one time exceeds 1000 square kilometers, and the surface thickness exceeds 50 kilometers, that is, 50,000 meters, forming a primary crust, then, in such a space and terrain transformation, Lord Castle will have the possibility to obtain one or more veins or deposits naturally generated by this space, and the location, variety, and reserves of those veins are random......"

"In other words, if I have the ability to complete such an expansion, it is possible to obtain one or more random mineral resources by luck, and all of them depend on luck?" Zhang Tie's eyes widened, he didn't expect the Black Iron Castle to have such an ability.

"That's both luck and chance, in general, the greater the expansion completed at one time, the deeper the thickness of the surface and crust, then the more types and reserves of minerals randomly generated in the Black Iron Castle, this process is similar to the mineral generation process of the outside world, if the castle owner can have the strength to complete such a large expansion of the Blackson Terran Corridor at one time, then, I dare to guarantee that the mineral deposits and veins in the newly expanded land of the Black Iron Fortress will not be less than that of the Blackson Terran Corridor."

Zhang Tie rolled his eyes helplessly, if he wanted the Black Iron Fort to complete such an expansion, with his current small body and small energy, even if he soaked in the sea for a hundred years, he would not be able to accumulate such basic energy reserves, let alone have the corresponding merit and aura value. Forget it, it's too extravagant to play with ore veins in the Black Iron Castle now, if you really have that kind of effort, you might as well buy the directly smelted metal outside and get it in.

After uncovering the stubble, Zhang Tie and Heller continued to adjust the three-dimensional map.

And thinking of his cultivation during this time, Zhang Tie suddenly had an idea, he pointed to a place on the Divine Mountain, "I need to build a cultivation ground here, and the ground should be stronger?" ”

"Cultivation ground?" Heller looked at Zhang Tie with some confusion.

"It's just like the place where I cultivated a few days ago, when I was cultivating, I could bring in the seawater outside and rush down at high speed, I think the effect of cultivating in that state is particularly good, and I can kill two birds with one stone, and I will have iron fetal fruit to eat while cultivating!"

"No problem, does the castle lord plan to retreat in the sea in the future?"

"That's what I'm going to do!"

"In that case, it is better to create a waterfall on this side of the sacred mountain, the impact of the 10,000-meter-high waterfall is also very impressive, which can make the castle lord usually have a better cultivation environment when he does not have the opportunity to retreat in the sea......" Heller said, his hand on the three-dimensional map, and a waterfall flew down from the side of the sacred mountain, and then there was a roar on the ground, and a river appeared...... (To be continued......)