Looking at the technology fruit that fell to the ground on the screen, Xiao Han didn't know how to use it, but he still stretched out his palm and tried to grab it.

"Hey, it's an entity!"

The moment his fingers just touched the fruit, Xiao Han felt as if he had touched the real thing, but in the next moment, the science and technology fruit flew back again.

But at this time, the whole fruit is no longer yellow, but becomes as crystal clear, and at the same time, you can see countless words inside, and the picture is turning.

"Are the words and pictures in this the technology that was born from it?" Xiao Han whispered and pointed his finger at the Crystal Technology Fruit again.

With the touch of his fingers, the crystal technology fruit trembled slightly, and the words and pictures on the surface of the fruit immediately stopped turning.

Then there was another flick, and the crystal clear fruit slowly enlarged in his line of sight until it took up the entire screen.

At this time, Xiao Han finally saw what kind of technology these words and pictures recorded, and at the top of the screen, the three traditional Chinese characters were very conspicuous.

"Crystallized mud!"

After a cursory flip through it, Xiao Han's face showed a hint of joy.

The technology bred in this technological fruit is not complicated, he has already understood it, and even as long as the materials are complete, it can be fired immediately.

It was a building material, seven or eight points similar to the cement he knew, but it was harder and stronger than cement.

If it is used to build houses and city walls, it only needs to be poured by vertical molds, which will save a lot of labor and time.

What's more, the dwellings and walls will be stronger and more durable.

Now that he is about to be promoted to a town, he doesn't know how many houses he can expand, but this does not affect his need for crystalline mud.

With this thing, he can ask Torgue to design level 6, 7, or even level 10 houses.

The previous level 5 house had a large area because it had to accommodate 20 residents, but because it was made of wood, it could only support a double-story structure, and it was also its limit to accommodate 20 residents.

But now it's different, with crystallized mud, you can also add cold iron to it when pouring, so that it is no different from a reinforced concrete structure, and you can easily build seven or eight layers.

With such a building, there should be no problem for one or two hundred people to be accommodated.

If you are not worried that the strength of the cold iron is not enough to support a higher number of layers, even if you cover ten or twenty layers, it should be okay.

And the amount of metal needed to build a house is bound to be a lot, and neither Ugin nor Dark Iron can withstand such consumption.

Only cold iron, because of its mineral deposits, can withstand such large-scale use.

Otherwise, even if you build a landmark building of forty or fifty floors on Cold Island, it will be easy.

But he didn't always have the opportunity to build such a tall building, and with crystallized mud and a tech tree, he still had a chance to exchange for a sufficient amount of dark iron, and even metal above level 6 or 7.

At that point, the so-called landmarks may not be his goal.

"Black crystal, clay, gypsum!" Looking at the three materials on the picture, Xiao Han showed a hint of a deep groan on his face.

Although these three materials have pictures, it shouldn't be so easy to find them all, but Raba, as a level 5 prospector, has traveled to almost every corner of Cold Island.

Although Rabah may not recognize these things, with these pictures, there should still be hope to find them.

After clicking back in the upper left corner, Xiao Han exited the page of the tech tree.

Having just defeated the other three islands, there are still a lot of things to deal with, and besides, Rabah is still in the city, so it is not realistic to let him go and find these three materials immediately.

Anyway, I'm not in a hurry for a while, so let's wait until I'm done dealing with the matter in front of me and promoted to the town!

I clicked the white button again, and the light screen disappeared immediately.

The black button does not need to be clicked, it is forcibly blocked and only lasts for half an hour.

He can also understand the blocking signal, after all, there is no such operation as blocking, sometimes you can't block some people's information, and with the function of signal shielding, you can solve this problem well.

But the half-hour limit, he was a little incomprehensible.

Shaking his head, Xiao Han no longer thought about this question, and after being promoted to a town, he should be able to find the answer at the Heavens Forum.

"Hey, what is this?"

was about to walk towards Land Rover and the others and let them clean up the battlefield, but Xiao Han found that green filaments of light floated out of the Void Bracelet.

Looking along these filaments, another section of it is connected to many zombies, skeletons, and even some of them have already floated to the city.

"What is this, those filaments of light that flew into the city, are they also connected to the corpses?" Xiao Han frowned and reached out to grasp these filaments of light, but it was illusory and couldn't catch it at all.

Unable to figure out why, he ran to the Land Rover in a few steps.

But just when he got close to the Land Rover, the strong desire to eat in his heart came out again, Xiao Han could only take a few steps back, walked to Peng Lei's side and ordered: "Open the city gate, let all the soldiers come out, and deal with these zombies!" ”

"In a few hours, the zombies should all wake up, throw them into the trench, and cultivate high-grade zombies as soon as possible!"

"I know my lord, I'll arrange it!" Peng Lei didn't say nonsense, turned around and ran towards the city.

Xiao Han looked at the Land Rover, but his heart was full of doubts, when he was close to Peng Lei and the others, he didn't have this desire to eat, why did he have this desire when he was close to the Land Rover!

After a while, Xiao Han found that there were more and more doubts in his heart, but he could only let go of these doubts and quickly ran towards the city, he wanted to figure out what the green light filament stretched into the city wall was connected to the other end.

There are a lot of filaments of light floating from the Void Bracelet, three or four hundred, but not many have reached into the city, and there are only a dozen.

Following the open door of the cave, Xiao Han quickly ran in.

"Huh, what's going on?"

Upon entering the city, he found that the dozen or so filaments had split into two strands, one extending to the ironsmith shop and the other drifting to the cellar.

"Can these filaments still connect living people?" Frowning, Xiao Han hesitated for a moment and quickly ran towards the ironsmith shop.

Listening to the sound of "clanging" in his ears, he strode into the blacksmith shop.

"Big ...... Your Excellency, Your ...... How do you ...... What's wrong? ”

In the ironware shop, Ling Yi and the others stopped what they were doing, and looked at the figure rushing in with some horror.

Xiao Han was stunned for a moment, and immediately understood why they were like this, anyone who saw a person with two heads on his head would be scared in his heart.

But now, he didn't have the heart to explain this, and quickly looked to the other end of the filament to see what it was connected to!