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"The choice of wall materials is important, do you have an idea?" Xi Mengyao looked at Zhao Yun: "You can't let me go to find these materials, right?" ”

A city of a million people, and a city in the end of the world, in the event of a war, how strong will the frontal walls have to be under pressure?

In order to be able to protect the city in the battle of many supernatural beings, zombies, diamonds, and even emperor-level powerhouses, the wall on the front must be extremely strong, so that even the emperor-level existence cannot be broken in a short time.

What kind of materials are needed for such a wall? At least Xi Mengyao didn't know and couldn't think of it.

"I'm a little confused!" Zhao Yun spread his hands and said with a smile: "Although the city has been built now, the strength of the city wall is too high, and I only have one guess for the time being, whether it is feasible or not still needs to be verified." ”

Subsequently, Zhao Yun found Sun Lao and discussed with him, and after a while, Sun Lao exclaimed.

"What do you think...... It's actually doable! Old Sun grinned, amazed by Zhao Yun's idea.

"Indeed, ordinary reinforced concrete, even if it is very thick, cannot stop the existence of platinum level or above, so I have been worried about the city wall, you say this, but it is easy to solve, just test it a little."

Do what you think! The people present were all actionists, including Sun Lao, who led people to move research equipment into the researchers, and then conducted research.

"Feasible, but I need metal, lots of metal!" Soon after, the researcher heard Sun Lao shouting excitedly.

"Brothers!" Hearing this, Huo Jianguo grinned: "It's our turn, metal or something, let's get it!" ”

"Let's go!" The Wolf Warrior Squad and the Du Yu Squad set off together, and they will go to major cities to collect all kinds of metals, a large amount of metals.

"I know there are some steel mills, but there are very few of them in the south, and the scale is not large, so it should not be enough to build the entire city wall." Du Yu spread his hands.

"It's okay, we still have a way, it's a big deal, just demolish the city that has been vacated, and tear back all the steel bars and iron windows!"

"I'm with you!" Zhao Yun also set off: "You can move back too little at one time, I can transport a large amount of metal at one time." ”

Manpower is limited, even if everyone is quite powerful, they can't transport back a large amount of metal at once, but Zhao Yun has a systematic backpack, but he can ignore the weight and transport back all the metal he finds at one time.

Another day passed, and Zhao Yun and others returned, but they also brought back a large amount of metal.

"So much metal?" When Sun Lao saw it, he was directly stunned: "You shouldn't have looted steel mills all over the country, right?" ”

"It's not that exaggerated, not to mention that China is so big now that we can't run it all in a day, but ...... In the entire Southwest, piles of metal are almost impossible to find. Huo Jianguo laughed.

"Is that enough?" Zhao Yun asked, relatively speaking, he cared more about whether the metal was enough.

"Enough, enough, there are at least a million tons here, we only need to cast a wall, it's completely enough! Give me a few days, and I'm sure I'll be able to build an amazing wall! ”

A few days later, the heat wave in the post-apocalyptic new city is pressing! A large amount of metal is melted and then mixed to form an alloy!

The alloy was melted down and poured little by little before the apocalyptic new city, and the incomparably strong and amazing city walls slowly took shape!

This alloy is unknown, it is made by fusing various metals, removing impurities and mixing, in terms of hardness, it is not much more powerful than those hard alloys before the apocalypse.

But the victory was large enough, and the Adepts were mobilized to pour the molten alloy liquid into the city wall, and in the end, the entire city wall became a whole!

Spanning the entire mountain stream, it is 100 meters high and has a staggering thickness of 20 meters!

In the center of the city wall, a forty-square-meter hole flowed out, which was the location of the city gate, twenty meters high and twenty meters wide, which can be called a huge city gate.

The two sides of the entire city wall are directly connected to the mountain, and even part of the mountain is watered with molten iron, forming a whole with the city wall.

Since the entire wall is made of liquid poured after financialization, it looks very rough and not very detailed and beautiful.

When you look closely, it looks like the microwave ripples on the surface of the lake, but it also has a wild beauty and natural beauty.

When the metal was completely solidified and cooled, everyone stood outside the city wall, watching the silver-white city wall glow brilliantly in the sun, and everyone's eyes lit up......

"This city wall, even emperor-level zombies can't break it, right?" Sun Lao sighed.

The entire city wall is a whole, even connected to the mountain, how much does it have to weigh? What's more, it's hard to even just want to break through with points!

The whole body alloy, after more than twenty meters, you must know that although this alloy is not as good as those aerospace alloys before the apocalypse, it is far beyond ordinary steel, even if it is an emperor-level existence, it is difficult to destroy the wall that is up to twenty meters thick.

"Do you really dare to think about it......" Xi Mengyao was so satisfied that she nodded again and again, and when she looked at Zhao Yun, she couldn't help but marvel at his thoughts.

"If you want to break through the entire city wall of such a big man, you want to break through it head-on...... I guess the enemy will be desperate, right? ”

"Not so optimistic!" Zhao Yun shook his head: "After all, it is only a hundred meters high, and this height is not a problem for powerful zombies or flying zombies and humans." It can be easily crossed. ”

"So, the city wall is only an auxiliary, and our defense is the fundamental!"

"Do you want this?" Xi Mengyao pouted: "It's already perfect, you still have to pour cold water on yourself." ”

"What cold water to splash?" Zhao Yun grinned, I was just close: "Turtle Immortal!" Bombard the walls with all your might! ”

Zhao Yun released the turtle immortal and let it shoot with all its might. This kind of thing, the turtle immortal people will naturally not refuse, and they are extraordinarily 'brave' when they shoot, and they are directly the strongest turtle school qigong!

Rumble!

When the dazzling Turtle Sect Qigong bombarded the silver-white city wall, there was a muffled sound, accompanied by a silver light explosion, making everyone a little unable to open their eyes.

But that's all, the Turtle School Qigong is like a stone into the sea, without any news, and it has not even left any traces on the city wall.

"This ......" The turtle immortal glared, and after a moment he scolded angrily: "Turtle son, what kind of city wall is this!" ”

Before, it was full of confidence, and even wanted to destroy the city wall, but it hit it with all its might, and the city wall didn't even have a!

"This city wall is indeed perfect...... the test of the turtle immortal made everyone breathe a sigh of relief, after all, the results can only be proved after the test.

"But this hole is ugly!" Xi Mengyao pointed to the location of the city gate reserved for going out: "Have you thought about what materials are used for the city gate?" ”

The city gates will certainly not be as strong as the city walls, but they must also be compensated for with amazing materials, otherwise, in the event of a major battle, the city walls will become weak points and will be quickly breached by the enemy.

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