Under the leadership of company commander Yang Jue.

    Lu Xiping, bailitohei, Xu Li and Li Li put on virus protective clothing, passed through the disinfection channel between the camp and the Great Wall, and finally boarded the elevator leading to the top of the Great Wall.

    Standing in the rising elevator, Lu Xiping gradually saw the whole picture of the disinfection channel.

    The disinfection channel is about 500 meters away from the great wall of the border. According to Yang Jue, this distance is very exquisite and scientific. Because the effective distance from the disinfection channel to the top walkway of the great wall of the border is generally less than 500 meters, the virus will be completely eliminated every 8 hours, In addition, when soldiers return, they can basically eliminate the virus from being brought to the camp through the disinfection channel.

    The disinfection channel is a row of 10 meter high and 20 meter wide white assembled zigzag snake houses, which completely isolate the border Great Wall from the camp. A one-way import and export channel will be set every 100 meters. Just now, Yang Jue and Lu Xiping climbed the border great wall through the export channel.

    In general, there is no need to disinfect the exit channel. Only when you come back from the great wall and pass through the entrance channel, you need to disinfect the whole body. This is mainly to save material consumption. After all, there is a face-to-face confrontation with zombies on the Great Wall, and the air is full of viruses. These viruses will inevitably attach to protective clothing, and the risk when they come back is much greater than that when they go out. Therefore, generally, only the entrance channel needs to be disinfected.

    Of course, this is only a general situation. If the situation is special, the exit channel will also be disinfected.

    After climbing the Great Wall from the inside of the Great Wall, he seemed to think of something, and suddenly asked, "company commander, why are there only four of us, Ma Tianle? Don''t they have to come?"

    "I brought you here to get familiar with the operational environment of the Great Wall. They are veterans, so naturally they don''t need to be familiar with it any more." Yang Jue said, "at this stage, our company is in a period of rest, and they don''t need to patrol the Great Wall, so I''ll let them rest for a while."

    "Xiao Hei, it''s stupid of you to ask such an obvious thing!" Lu Xiping teased.

    Li Li added, "Xiao Hei, let me tell you a cold knowledge. Generally, after the company completes its task, it will usher in a period of rest."

    "Nonsense, of course I know. I''m just curious. Can''t I?"

    A hundred miles is black and red in the face, that is, you can''t see your face in protective clothing, otherwise it must be very funny.

    Yang Jue smiled, waved and said, "OK, don''t argue about this. Now we have boarded the Great Wall. Take a closer look at the difference?"

    Lu Xiping''s ability to respond and receive information was the fastest. He spoke at the first time: "I think the air outside seems to be getting better and the sky is blue. This should be some benefits brought by the shutdown of previous industrial areas after the fall of the world. It can be said to be a good news for Liao Shengyu."

    Yang Jue said slowly, "if you eliminate the virus in the air, the air pollution is really better now than before, but we are now at the top of the Great Wall at the border, with a horizontal height of about 200 meters. At a glance, we naturally feel that the sky is blue, but if you are close to the edge of the Great Wall at the border, looking down is another scenery."

    Hearing the speech, Lu Xiping, Bai Li Tou Hei, Xu Li and Li Li walked to the protective wall of the Great Wall at the border and looked down. They couldn''t help but take a breath!

    Just below the outer side of the Great Wall, there are piles of rotten corpses. The wall of the Great Wall is also covered with dirty blood. At this time, it has been dried by the sun. Some dirty blood is mixed with some internal organs or intestines, which are also hung on the wall. White maggots can be seen in the piles of corpses, which makes people feel cramped and sick!

    Lu Xiping, in particular, has the best eyesight among all people. He can not only see maggots, but also see clearly what maggots are doing. Moreover, he can smell a stench in the air, which stimulates his body and nerves. He almost couldn''t help vomiting directly. Fortunately, his strong self-control ability suppressed this disgusting feeling.

    Bai Li was too dark to look at it again. He was shocked and said, "are these bodies left after the zombies attacked the city?"

    Yang Jue nodded: "yes, every time the number of zombies attacking the city is at least more than one million. Since this time, the number of zombies attacking the city seems to be increasing. Fortunately, their means are primitive, otherwise we really can''t resist it."

    Xu Li asked curiously, "but... Looking at the number of bodies below, it seems that there are not so many?"

    Yang Jue explained: "Millions of zombies refer to the total number of siege zombies, but many have been destroyed before they rushed under the Great Wall. For example, in the last siege, we used nuclear bombs to destroy a wave of zombies in advance. Moreover, the zombie piles you see are not piled up from the beginning to the present. We will clean up the corpses at regular intervals, otherwise the corpses piled up now , I''m afraid it''s higher than the Great Wall! "

    Lu Xiping suddenly said sadly, "our company''s predecessors died when performing the cleaning task, didn''t they?"

    "Yes!"

    Yang never wanted to mention these sad things, but when he thought that it was necessary to tell these recruits about their experiences and lessons, which would help them improve their survival ability on the battlefield, he endured his grief and said: "For the cleaning task, we will first remove the scattered zombies nearby, and then establish a strategic depth of about three kilometers, so that the cleaning vehicle can clean the zombies under the city wall safely and smoothly. However, these dog day zombies have strong evolutionary ability. After several times of the same tactics, they have evolved corresponding tactics and ambushed in the hidden cave first, When we began to establish strategic depth, we suddenly rushed out and caught us unprepared! "

    Hearing this, Lu Xiping was more convinced.

    That is, there must be a mother virus command in the zombie, otherwise there will never be an organized phenomenon, let alone this phenomenon of response tactics.

    This is not a good thing, which means that the longer it is dragged down, the more comprehensive and targeted the evolution of zombies will be. After so many fruitless sieges, I believe zombies must have evolved. Maybe the peace in front of us is that zombies are brewing a greater peace before the siege.

    At this time, Xu Li asked, "company commander, why must we establish strategic depth? Can''t we clean it directly?"

    Yang Jue said: "It takes time to clean up so many corpses. If we don''t establish enough strategic depth, once a wave of zombies attacks us, we have no defensive position, no turning space, and it''s too late to retreat, let alone have time to complete the cleaning. Therefore, the significance of strategic depth is to complete the task more safely and call for support and retreat."