Two twin Maxim machine guns have been installed, and the door looks thicker and stronger after being upgraded.
In particular, the structure of the door has changed from a push-pull type to a lifting type. The entire door has been completely embedded in the wall. If you want to open it without lowering the door, you have to blow up the entire wall together.
The door, which was originally made of ordinary steel plates wrapped in reinforced concrete, was upgraded to a solid heat-treated homogeneous nickel-chromium alloy steel plate with a thickness of 30cm.
During World War II, Japan used steel made of this material as the main armor of Yamato-class battleships, and stacked its thickness to a crazy 650mm.
At that time, the Yamato-class main gun armor was 650mm thick, which was impossible for any artillery at the time to penetrate it in the immune zone.
In fact, the Federation found such a steel plate after the war. In order to test the performance of this steel plate, they used the 410 main gun of the Missouri-class battleship to conduct zero-angle bombardment at a distance of 300 meters before penetrating such a steel plate.
But after all, it was a technology almost a century ago. Now nickel alloy steel has become an ordinary steel that can be bought in the steel market at a low price.
Among the materials Chen Xin collected before, there was a batch of steel columns of nickel complex alloy steel, which were sold as raw materials for metal processing.
In Chen Xin's original plan, these materials would not only be used to strengthen the door, but also be used to reinforce the structure inside the shelter.
Of course, in Chen Xin's original plan, he did not intend to make the door a 30cm thick solid metal door. It was enough to use a few centimeters of steel plate to make a hollow structure. The inside was still made of reinforced concrete.
But after Ding Ning gave him the note, Chen Xin felt an inexplicable sense of crisis and chose to turn the door into solid metal, even though this nearly doubled the survival points he spent on upgrading.
Now, although Chen Xin's gate does not have the exaggerated thickness of the main gun armor of the Yamato-class battleship, his enemy also does not have the main gun of the battleship.
As for the use of explosives, they cannot affect such thick armor. Otherwise, there would be no need to use armor-piercing projectiles to effectively penetrate the battleship's armor in war.
Looking at the door that he could only describe as extremely strong, Chen Xin couldn't help but scratch his head while feeling extremely reassured. Now that the door's defense was sufficient, the walls were not as strong as the door.
But there is no need to worry too much about this issue. After all, his shelter is underground, with a mountain more than 200 meters high above his head. The thick soil will not be much harder than metal after freezing. If he wants to dig through the frozen soil, Relying on human power is definitely not going to work.
So now as long as Chen Xin doesn't open the door, no one can enter his shelter.
The hydraulic lifting structure of the gate ensures the reliability of the gate, but if the power is out, it will be a bit head-scratching to open the gate.
Fortunately, the hydraulic mechanism of the gate lifting column has an emergency door opening device. If necessary, you can directly release the gun inside, allowing the lifting column to drop instantly and open the door.
But this is an emergency measure that can only be used once, and can only be used at the most critical moment or when necessary, because once done, it will be difficult to open the door again.
With such a solid and reliable gate? And with Maxim installed on the gate as a defensive weapon? Chen Xin was completely relieved about his own safety.
Back inside the shelter, sitting on the sofa in the living room? Only then did Chen Xin have enough time to think about the ins and outs of the whole thing.
First of all, the incident should have started when Baling County Shelter No. 2 was attacked, which was the mission where Qin Lan was injured.
Because the terrorists who attacked the shelter used a suicide attack in this incident, causing more than 20 casualties, which attracted great attention from the city government and established an investigation team to investigate. The first case Chen Xin encountered The first touch was also at that time.
Subsequently, the provincial government, which received the notification from the city government, was also shocked by this incident, so it sent a special investigation team from the provincial capital Xingcheng to the city, and formed a joint investigation team with the city's investigation team, and subsequently launched the first investigation Second touch row.
According to Qin Lan, it is very likely that the city government obtained important clues during the first search and determined that the terrorists who caused the attack were in the area where Chen Xin's home is located, so Chen Xin was still included in the second search. New home included.
But there is a doubt, because Qin Lan was injured, Ding Ning was sent to take care of her, and the two were given a month's leave. This happened after the attack and before the city government set up an investigation team to conduct investigation.
"Did Uncle Ding and the SWAT team know in advance that this matter has something to do with me?" Chen Xin rubbed his chin, always feeling that something was wrong here.
Logically speaking, even if Uncle Ding wanted Ding Ning and Qin Lan to protect him, he should have made such a decision after making sure that the terrorists were in his area for the first time.
But Uncle Ding gave Qin Lan and Ding Ning a month's leave from the beginning. It was as if he knew what would happen in advance. Then he deliberately found a reason to separate Ding Ning and Qin Lan.
As for the note Ding Ning gave him before? Chen Xin felt that this note was quite normal. After all, this was the second time that the platoon had been completed. If any action was to be arranged, there should be enough clues and intelligence.
It's just that Uncle Ding has always loved Ding Ning. In order to prevent Ding Ning from being in danger, he simply gave her a holiday before the disaster struck and let her go to Mo Qingyan's place...
When Chen Xin thought about taking a vacation, he suddenly had inspiration and connected several things.
Before the attack, Uncle Ding, as the captain of the SWAT team, may have received intelligence or clues from certain channels, but he did not know the time and place of the attack, or that the attack would cause such a large number of casualties.
So at this time, both Ding Ning and Qin Lan were working as usual.
As the attack progressed, Qin Lan was injured, more than 20 police officers from the SWAT team and the armed police were injured or killed, and things suddenly turned bad.
Therefore, at this time, Uncle Ding used the excuse of Qin Lan's injury to send Ding Ning to take care of her, and directly gave them a month's leave, probably with the intention of letting them stay in a relatively safe place like the hospital.
This is why Ding Ning didn't give him the note at first, nor did he say anything about moving in with Qin Lan temporarily.
But as the two investigations unfolded, it became clear that something happened that Chen Xin didn't know about, which caused things to change.
It was at this stage that Ding Ning's note was handed over to him. It was obvious that Uncle Ding's original arrangement had changed.
This may be a sign that the joint investigation team is going to carry out some big operation. Otherwise, Uncle Ding would not be able to put his daughter here. This is a shelter that is likely to be within the scope of terrorist activities.
But this is not necessarily true. Chen Xin tapped his fingers on his knees. After straightening things out, his thinking became much clearer and he also had new judgments.
What he just analyzed were the thoughts of the police and the joint investigation team, but if he puts his perspective on this group of terrorists, Chen Xin feels that they may not come to his refuge.
Because although terrorists are crazy, they are not lunatics. Since they can attack official shelters and carry out suicide attacks at the cost of more than a dozen lives, they must have their goals.
No matter what the goal is, the suicide attack is likely to be just the beginning, because for terrorist organizations, a dozen people who have undergone rigorous training and dare to launch suicide attacks are also very valuable and cannot be wasted so unintentionally.
So the first attack they made was probably to attract the attention of the police and the city government.
So assuming that their goal is achieved, the attention of the city government and the police has now been drawn to Baling County, which means that the attention of the city government and the police to the urban area has declined. Under such circumstances, if you, as a terrorist, want to If you want to launch the next attack, where will you choose
Chen Xin felt that the answer was already obvious.
Thinking of this, he couldn't help but worry about his friends in the city, especially Mo Qingyan and Mo Qingxin. The two of them lacked strong enough defenses and had little resistance. If something really happened, the two of them would I really have no ability to cope.
How about letting the two of them come to his place to escape for a while
Chen Xin considered this idea, but hesitated.
On the one hand, the Mo sisters may not be willing to come, and on the other hand, he has five people to live in, and if four of them are girls, it will be very embarrassing for him.
However, considering the possible dangers, Chen Xin thought it would be better to wait for Qin Lan and Ding Ning to arrive and discuss with them before making a decision.
Just like this, where to live...
Chen Xin couldn't help but scratch his head. After finally upgrading his bedroom, would he still have to sleep on the sofa
But this is all a thing for another day. Now Chen Xin feels that he should prepare for Ding Ning and Qin Lan to come and live there. After all, they are two girls, so they still need to prepare some things.
This inevitably makes Chen Xin feel troubled, but the arrival of Ding Ning and Qin Lan cannot be said to be without benefits. At least they are two people who can work. Although they are only staying temporarily, they can help him share a lot of the work in the shelter. matter.
At least there are people helping with many things in the greenhouse now, and Chen Xin no longer has to work alone from morning to night.
Moreover, when there are other people in the shelter, it can be a lot more lively. There are people to chat with and play games with during the evening break.
To be honest, it’s nice to play games alone, but you’ll be happier if you have someone to play with.
Thinking of this, Chen Xin couldn't help but look forward to the arrival of Qin Lan and Ding Ning. (End of chapter)