The work of the Dead Forest is in full swing, and when Mitora and Jiro have finished transporting all the building materials through UFO shells, Ichiryu gives them a new task.

The materials used to build the super-prison are so sturdy for most of the inmates that there is no chance of escaping once they are locked up. But some of the more powerful prisoners needed stronger cells and shackles that could only be obtained from the gastronomic world.

This difficult task fell on the shoulders of Jiro and the Three Tigers.

"The steel cloud metal above the Golden Swamp is a good material, and there are some hard trees that grow in the food world, which are all targets for you to collect. Give you three days, this little thing should be done, right?"

"Yilong, you really look like a capitalist now. ”

Jiro complained, but he still obediently followed the three tigers to the food world.

Ever since he learned about Acacia's master's plan from Ichryū, Jiro finally understood how much pressure Ichū was on during this time. As the president of IGO, he has endured more than just superficial glamour.

Maintaining stability in the human world is not only the wish of Acacia's master, but also the responsibility of Jiro and his disciples. No matter what happens in the future, when you have the ability, you have to help you.

Riding the UFO shell across the island from Dowu Island to the Golden Swamp, the steel cloud that had been tightly pressed against the swamp had already floated some distance. The golden swamp below can be faintly seen.

Since it was the material designated by Yilong, the two of them directly began to use their own means to excavate on the surface of the steel cloud.

The UFO shells had a limited carrying capacity, and they couldn't use so much steel cloud metal to build a prison, so the two of them stopped after collecting about a hundred cubic meters of steel cloud metal.

The iron cage made of so much metal is enough to isolate every cell in the super prison.

Carrying the steel cloud metal onto the UFO shell and back to the Dead Forest, the two of them returned to Yudomo Island once more. Compared to Gangyun Metal, the other materials required by Yilong are easier to collect. The main cell is isolated by a sturdy steel cloud of metal, and the other ordinary cells are enough as long as they can hold the strong below the capture level of a hundred.

And such materials can be found everywhere in the gastronomic world.

Returning to the Dead Forest with a large number of materials, Jiro and Santora began to play the role of cutters again. The material was as fragile as a piece of paper to the two of them, but no amount of effort on the part of the workers could cut it into the shape it needed.

However, compared to Lin Sulai, the work of the two of them was too easy

After the steel cloud metal was transported back, Lin Su stopped what he was doing and concentrated on dealing with this large piece of iron. His main job was to find a way to melt the steel cloud metal and then pour it into molds to create various iron cages and shackles.

Before, when Qin Yu was making kitchen knives for Sally El and Hodge, just a little steel cloud metal almost killed him, Lin Su wanted to melt such a large piece of iron, just think about it, you know how troublesome it is.

The conventional method didn't work, and Lin Su could only sacrifice the magic weapon of the ice crystal magnifying glass again.

A magnifying glass of ordinary specifications could not reach the temperature of melting steel cloud metal, so Lin Su made a giant magnifying glass with a diameter of nearly two hundred meters.

This huge magnifying glass is capable of instantly creating a high temperature of more than 4,000 degrees Celsius at the focal point, shining on the ground and directly melting the ground into a large hole several meters deep.

Even steelcloud metal, which is extremely heat-resistant, can only melt into molten iron in a short time when it encounters such high temperatures.

The quality of the steel cloud metal products obtained by this rough smelting method certainly did not compare to the finely crafted kitchen knives of Sally El, but it was definitely more than enough to build a prison cell.

In order to cope with the high temperature of the molten steel cloud metal, the casting molds used are also specially made of high-temperature resistant cermets, and the cost of each is more than 30 million yuan.

Counting the cost of various equipment and labor, the cost of the super prison exceeds 2 billion yuan.

Of course, such a price has already blossomed for those IGO franchises, after all, many buildings in the city centers of these countries cost more than ten times this price.

However, if you count those precious materials from the food world, as well as the salaries of Lin Su and the four of them, the cost of this super prison will definitely be an astronomical value.

It is precisely because of this consideration that Yilong will try his best to let his younger brothers work as coolies.

……

After a busy week, the renovation of the hive has been basically completed. Although it looks very rudimentary, it has now been used to hold prisoners.

Looking at the fruits of their labor, the soldiers who participated in the project were also taken aback.

It is an honor for every soldier to be able to participate in the construction of such a significant building. When they are old in the future, they can point to the photo and tell their grandson that the largest and strongest prison in the human world was built by his grandfather.

But if they knew what was going on in this prison, they might not be so happy.

Because of its location in a treacherous place like the Dead Forest, where the most brutal criminals are being held, this super prison has gradually become a place where people talk about it. It is known as the Death Prison of Return, and there are many legends about it, and a single name can stop a child from crying at night.

The proudest thing for these soldiers in the future is no longer that they participated in the construction of this super prison, but that they were able to get out alive after seeing the whole picture of the prison.

In addition to renovating the hive of the main body of the prison, the soldiers also set up 12 giant landing bridges with a length of more than one kilometer on the passage leading to the hive. These landing bridges will only be allowed to pass through if they are authenticated.

In order to avoid the frequent damage of these landing bridges due to the attack of fierce beasts, Lin Su gave Yilong a bad idea.

"You can go for an ingredient called the Durian Bomb, and its flavor is sure to make the beasts of the Dead Forest afraid of it. ”

Imagining Yilong's expression of being stunned by the stench of the durian bomb, Lin Su's heart was dark.

……

The main project was over, and Lin Su sent those soldiers back to the IGO headquarters, while another group of people were already waiting for him there.

These people were wearing a white outfit that looked like a chef's uniform, and those who didn't know it thought they were cooks. Actually, these are the craftsmen who were hired by IGO to renovate the super prison, and they come from a place called the Craftsman's Forest.

The Craftsman's Forest is a well-known material forest in the human world, and the animals and plants that grow there can be directly used to make various craft products, and there are several of them that Lin Su alone knows.

It not only produces a variety of handicraft products, but is also home to many high-level craftsmen.

When Lin Su's food house was renovated, the leader of the engineering team was a craftsman from the Forest of Craftsmen.