Zeng Bo really didn't expect that he actually took a short military theory class in this conversation room.

But after thinking about it carefully, what Instructor Cheng said is really reasonable. Although Zeng Bo knew nothing about military theory, there was one thing that military blindness could think of: the monsters that emerged from the gray cracks would not stay in the empty steel forest, they would surely explore this new world for them.

In this way, war is inevitable, even if the Huaxia Zhengfu abandons Shanghai in order to protect the overall situation, but the monsters will not stop at the border line of Shanghai City, they will inevitably pose a threat to the lives and property safety of people in other regions, so they must be intercepted within the defense line.

If you use a passive defensive style of play, you need to arrange multiple lines of defense to block layer by layer, which not only increases the difficulty of arming, but also increases the casualty rate while consuming a lot of resources, which is completely a thankless way of playing.

From another point of view, since most of the important assets have been transferred and the residents have been evacuated from the city, after bearing some of the industrial losses that cannot be transferred, Shanghai is no longer a big city, but a meat grinder - in the past few days of the evacuation work, Zeng Bocai learned that Shanghai is not only an economic, financial and trade center, but also the largest comprehensive industrial city in the country, and some metallurgy, machinery, shipbuilding, chemical and other industrial facilities are not as easy to transfer as the population, so they can only endure the painful sacrifice.

During the defense of the southern capital, in order to avoid accidentally injuring civilians, the troops who entered the city did not use large-scale high-power weapons of destruction, and only a few suburban locations were covered by artillery fire after evacuating the people.

If the war monster of the Nandu Military Region goes all out, then the fangs it can use to kill the enemy are not only guns and missiles, but also chemical weapons and biological weapons.

Therefore, perhaps Instructor Cheng is not wrong, the withdrawal of Shanghai is not because the troops do not have the confidence to achieve victory, so they give up the struggle and give up the country, but because the above believes that it is more important to ensure the safety of the people, and that closing the door and beating the dog can greatly improve the efficiency of killing monsters, so that the actual losses suffered by the country are reduced, and at the same time, the personal safety of the people is effectively guaranteed - as for the property of the citizens of Shanghai, it can only be used as a victim of taking into account the overall situation. This choice is indeed cruel, but the personal safety of the general public is always more important than part of the property, and the only thing the state can do is to wait until after the war to try to make up for the misfortunes of the people of Shanghai.

On the other hand, because the defense line is located at the edge of the city, there is no possibility of accidentally injuring friendly troops, and when the monsters of the demon tide appear in a pile and are concentrated in large numbers in the urban area, they can carry out a sweeping bombardment of the urban area that has been abandoned, which saves time and effort, and the guard troops on the edge of the city, relying on the blood transfusion capacity of the national highway and highway, it is not difficult to intercept all the fish that have slipped through the net within the defense line.

Thinking along these lines, perhaps those bunkers were actually built to protect the soldiers inside and outside the line of defense in the event of a nuclear explosion.

The above order is very clear, except for the defenders and those who have stay permits, all the others will withdraw from Shanghai, and the huge city will be unmanaged, or it will not be long before all kinds of problems will arise, which is clearly a plan to abandon the city. Having witnessed various events in the past year, Zeng Bo has learned a truth: Never underestimate the resoluteness and courage of Chinese leaders at critical moments.

Think about the Battle of Yuanjiang, in order to exterminate the zombies and mutants in the city, the air force dropped a large number of submunitions in the Yuanjiang City, resulting in the Yuanjiang City District being unable to resume use in the next ten years or even decades.

As a science student, Zeng Bo will not be easily misled by the exaggerated reports made by unscrupulous media to attract attention, although he does not know the true power of nuclear bombs, Zeng Bo is convinced that nuclear weapons are not as terrifying as the public thinks, so Zeng Bo will not talk about nuclear discoloration like everyone else.

In fact, it is impossible to see a wasteland scenario of nuclear warfare like the one described in third-rate science fiction, such as "the nuclear explosion area still retains deadly radiation hundreds of years after the nuclear explosion and becomes a forbidden area for life", "the organisms around the nuclear explosion area are genetically mutated by radiation and become gigantic deformed monsters with terrifying destructive power" and other bridges are just baseless conjectures.

As far as Zeng knows, the fallout of modern nuclear weapons is not as terrifying as most people think, unless it is deliberate. Generally speaking, the nuclear explosion will take the air explosion, and in the big city of high-rise buildings like Shanghai, the air explosion is difficult to form an effective radiation fallback killing, usually one to two weeks after the nuclear explosion, the radiation dose in the radiation area will drop to a non-lethal level, if the body is healthy enough, you can try to leave the safety shelter for a short time after the nuclear explosion, go out to seek rescue.

As for the statement that "radiation rays can penetrate everything, it is futile to hide in bunkers" is even more ridiculous, if the safety bunkers do not work, how can the major bunker manufacturing companies receive orders that float into their hands like snowflakes? Could it be that those who spend money to build bunkers are stupid?

Theoretically, some of the rays are capable of penetrating the protective layers of all shelters and bunkers, but in practice there are multiple layers of protective filtering, and residual radiation does not harm the evacuees hiding in the bunkers.

Many people don't know that there is a large amount of uranium hidden under the seabed, but fishermen living near the sea will not be damaged by this slight radiation.

Therefore, the role of the bunker is basically clear, that is, it is used to allow the defense forces to avoid the radiation dust damage of a large-scale nuclear explosion, and when the radiation dose in the city gradually decreases, the soldiers hiding in the bunker have to leave the bunker to continue fighting, because Huaxia's nuclear weapons have been moving towards miniaturization and precision since the successful development of the road, especially after the nuclear disarmament in 09, the stock of large-yield nuclear bombs is not much, and there is no big guy like the Tsar Bomba.

With the power of the nuclear warheads in the Huaxia armament, it is impossible to raze Shanghai to the ground if a few are dropped, and it is not advisable to wash the ground with nuclear bombs, because on the one hand, it may bring about a climatic disaster such as a nuclear winter, and on the other hand, the covering nuclear bomb bombing will tear the space crack again, which is the experience gained in the defense of the southern capital.