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Hearing Chen Yuan's explanation, David couldn't help but nod in agreement.

He understands that if he wants people to get out of the settlement with peace of mind, in the final analysis, it is necessary to ensure the safety around the settlement.

They have tried to get people out of the ghetto in the past.

But because the security measures were not done well. This led to several accidents.

The people were scared back one after another.

Chen Yuan then said, "As for the alarm. Generally, it will only sound when more than 5,000 zombies enter the 100-kilometer safety zone. Generally, zombies below 5000 in size, we have the ability to destroy them all when they break through to a 70-kilometer range. ”

"There are several ways to sound the alarm."

"One is a normal alarm. We have set up sirens in the field, on major highways, especially on the 50-kilometer cordon. As soon as a button is pressed in the command center of the Iron Keep, these sirens will go off at the same time. Remind the people in the vicinity to evacuate to the Iron Castle. ”

"The second is a mobile phone alert. Our Wi-Fi is covered within 50 kilometers of our Iron Fort. If you go out, if you have a mobile phone or a special siren, you will receive an alarm. Evacuation reminders. ”

"The third type is the pyrotechnic alarm. This is done by releasing specially shaped fireworks at the same time in multiple places in the free zone. ”

David nodded from time to time. It is believed that this would indeed provide more protection.

At the same time, looking at the many vehicles still coming and going on the road, he was really envious.

And their convoy continued to make its way to the Iron Castle.

The town of Hada was only 7 kilometers away from the Iron Fort, so in about 10 minutes, they were already near the Iron Fort.

Through the window glass, David and the others finally saw the huge fortress city not far away.

Chen Yuan introduced: "Everyone, in front of you is our steel castle. Later we will pass through the Nenjiang River and enter the Iron Castle. ”

"Oh God!" Regers couldn't help but sigh: "Chen, how much cement did you use to build this city!" ”

It is not for nothing that Regers exclamates in this way.

Because in their sight, the first wall of the Steel Castle alone, that is, the west side of the wall around the island, is about 5 kilometers long, and its actual circumference has reached 15 kilometers long!

Moreover, after three years of construction, the height of this wall has also reached 32 meters! The average thickness is 15 meters.

Although it is a double-layer reinforced concrete with a thickness of 5 meters outside and 1.5 meters thick inside, and the structure of the middle clad soil and stone, the cement consumed can only be described in terms of the amount of days.

If this concrete is used to build a dam, it is estimated that it will be enough to build ten Hoover dams. Not to mention the fact that there is a second wall and a large number of houses inside.

Then, their convoy slowly passed over the Nenjiang Bridge of the Steel Castle and arrived outside the gate of the Steel Castle.

Here, David and the others saw a large number of vehicles and people entering the city from the city gate in an orderly manner.

The scene was so lively that it was like a market.

However, this did not cause congestion.

As for the Iron Castle, it seems that there is no card check here at the city gate. Only a few soldiers were on duty and maintaining order.

However, David knew that within the walls of the Iron Castle, there was also an urn city.

Outside vehicles and personnel can be allowed to enter first, and then slowly enter for inspection.

In fact, they had already secretly used satellites to observe the general situation of the Steel Castle for a long time.

So when David and the others passed through the city gate, they saw a huge urn city behind the city wall.

After other vehicles and people enter the city, there will be special personnel responsible for guiding them to a special area to wait for inspection.

However, the vehicles of David and the others passed directly through the urn city, and entered the steel fortress through the gate of the urn city.

At this time, David couldn't help but ask curiously, "Chief Chen Yuanbao, I just saw that there seem to be a lot of empty vehicles parked in your urn city. There is even a multi-storey parking lot dedicated to parking, but are cars not allowed inside the Iron Castle? ”

Chen Yuan replied, "Yes." In our Steel Castle, there are indeed restrictions on vehicles. ”

He explained: "The longest point of Jiangxin Island, where we are located, is only 5 kilometers at its longest point and only 3 kilometers at its widest. The gate we are currently passing through is the western gate of the Iron Citadel, located in the central part of the western part of the island. From here, the farthest point on the island will not exceed 4 kilometers at most. Therefore, in the Steel Castle, there are very few opportunities for everyone to use the car. ”

"And we have a public tram dedicated to commuting in the fort, a total of 3 routes. One is the roundabout tram, with a total of 14 stops, with a distance of 1 km between each station. The second is a tram from the West Gate to the East Gate, with a total of 5 stops, and each station is only 500 meters away. The third is from the north gate to the south gate, a total of 11 stations, and the distance between each station is only 500 meters. So it's still very convenient. And if too many cars enter the steel castle, it will bring a lot of safety hazards, and cause traffic congestion. ”

"So inside the fort, only special vehicles are allowed to enter at the moment. For example, official vehicles, military vehicles, freight vehicles, etc. Private cars were left in the four urns. ”

David couldn't help but nod in understanding.

Indeed, the island on which the Steel Citadel is located is not very large. And it's really not a problem for people nowadays to walk a few kilometers after being strengthened. What's more, there are three trams in it, so you can sit in the nearest place. It is estimated that the maximum walking distance will not exceed 500 meters.

At the same time, David and the others have finally entered the real steel castle.

Looking at the wide and clean streets, the European-style, classical and beautiful buildings, and the residents of the Steel Castle who come and go in bright clothes and ruddy complexions.

David and the others couldn't help but light up.

Regis glared and exclaimed, "Oh my God, it's so beautiful here!" Chen, are you sure this place was built after the end of the world? It's just unbelievable. ”

In fact, there was no need for Chen Yuan to answer, David and they knew very well that this neat and beautiful city was indeed established after the end of the world. They compared the pre-apocalyptic and post-apocalyptic satellite photographs here. Before the end of the world, it was a wilderness. Not even a single building.

Chen Yuan also replied with a smile: "This is indeed established after the end of the world. I'll take you to the hotel for a rest. In the afternoon I will show you around our fort. ”

And David shook his hand again and again: "No, no, no! Chief Chen Yuanbao, we are not tired and do not need to rest. We're really curious about your Steel Castle right now. Can you take us on a tour now? ”

(End of chapter)