After being notified, everyone quickly rushed to the heart of the office area, where there were two large sightseeing elevators and a metal staircase spiraling down, and it seemed that this was the way to the floor below.

Chris broke off a few glow sticks and threw them through the gap in the middle of the spiral staircase, and the turquoise light continued to fall, slowly disappearing from everyone's view.

The height of the first underground floor is about two meters eight, and Li Nan extrapolated from this number that the 55-story building is about 165 meters.

The fact that the new Ambrera company was able to build such a magnificent underground structure in this small town without being discovered by the U.S. government did not know whether to praise them for their good public relations work or to denounce the incompetence of the U.S. government.

Quint also came to the central staircase at this time, and he also brought good news, from the staff computer in the office, he got the functional diagram of this underground building, Li Nan and the others were overjoyed, and hurriedly came over to check.

The 55-storey underground building is in the shape of an inverted pyramid, so the top floors cover the most extensive area and then shrink from floor to floor.

The first three floors are office areas, and the fourth to tenth floors are integrated service areas, including restaurants, swimming pools, cinemas, shopping malls, and even supporting facilities such as hospitals and kindergartens, which is like an independent underground city.

The 11th to 30th floors are staff quarters of different specifications, the 5th floor below the 31st floor is the warehouse area, the 36th to 50th floors are marked with the scientific research center, and the bottom five floors have no introduction.

This schematic diagram of the function of the floor saves Li Nan and the others a lot of time, so that they don't need to conduct a detailed search on each floor, according to Li Nan's speculation, the virus strain and the madman Glenn who is trying to destroy the world are likely to be within the bottom five floors.

In any case, it is still necessary to go deep underground, but although there are two convenient and fast elevators, Li Nan definitely does not plan to take them, and he will not let those soldiers take this thing that is 100% controlled by the enemy to die.

Judging by the dangers encountered by the steel spiral passage, there should be hidden surveillance equipment everywhere in this building, and the enemy can see their every move.

Otherwise, why did the elite team happen to be halfway through that spiral passage, and the enemy immediately activated the giant steel ball mechanism, which was obviously directly controlled by someone.

The height of more than 100 meters was not a problem for these soldiers with good physical fitness, and after gathering everyone, Li Nan still asked everyone to divide into three batches and march down according to the previous arrangement.

The road was unimpeded, and it seemed that the people who originally lived and worked in this huge and magnificent underground R&D center had disappeared like the residents of the town, and the silence here made people feel a little uneasy.

The soldiers at the front sent a message over the walkie-talkie that when they reached the thirty-sixth floor, they found that the stairs and the two elevators had terminated here, and that if they wanted to continue down, they would have to look for other entrances.

Li Nan soon took the members of the elite team to the thirty-sixth floor of the basement, and the heavy alloy gate in front of him was marked: Experimental land, danger stops!

In a research and development headquarters that has developed a highly infectious and can destroy the world, the most terrifying place is definitely those laboratories, if there is a choice, Li Nan really doesn't want to go in, but unfortunately he really doesn't have many options.

"Everybody put on your hazmat suits and blow open this door!" Li Nan looked at the gate and gave an order.

Everyone quickly put on their biohazard suits and masks, and then the soldiers in the team who were proficient in explosives stepped forward, and after planting the explosives, the extremely strong alloy gate was blown open after a muffled sound, and at the same time, the entire underground building suddenly sounded a shrill alarm.

Although he didn't know what was going on, this situation was definitely not a good thing, Li Nan hurriedly ordered: "The rear team is stationed in place for defense, and the front team remains vigilant, don't act rashly for the time being!" ”

After giving the order, Li Nan stood at the gate of the blasted with an electromagnetic gun, carefully observing the situation in the experimental area inside.

Behind the door is a corridor five meters wide and more than twenty meters long, with a row of fluorescent lamps emitting a soft glow every few meters on the ceiling more than three meters high, and at the end of the corridor is an alloy door, which is empty and does not seem to be dangerous.

Although this corridor was safe and harmless on the surface, Li Nan found that the walls here were also made of silver unknown metal, and what had happened in the metal spiral passage not long ago made him feel uneasy.

Just as Li Nan was about to send Quint to inspect the corridor, there was a chaotic and heavy footstep overhead, mixed with the roar of zombies that he hadn't heard for a long time.

Countless red-eyed zombies ran wildly, and even many zombies jumped directly down the stairs, some of the more unlucky zombies fell directly into the flesh, and some zombies who were not killed began to struggle to bite the soldiers around them.

This time, without Li Nan's orders, the guns in everyone's hands began to shoot fiercely.

These zombies didn't know where they were hiding before, but when everyone looked up, the spiral metal staircase was full of ugly, rotten, red-eyed zombies with teeth and claws.

The two hundred soldiers equipped with the new electromagnetic gun have very strong firepower, if this is on flat ground or other favorable terrain, it is estimated that they can kill these red-eyed zombies without damage, but unfortunately the place where everyone is at this time is really not good.

Two hundred soldiers and Li Nan and the others were distributed on a spiral staircase, and there was no problem in dealing with those zombies who kept running down the stairs, but those crazy zombies who jumped directly down and smashed into the crowd brought huge trouble to the large army.

Within two minutes of the battle, seven soldiers had already died, all of whom had been bitten by the jumping zombies, and the number was still climbing.

"Bang! Bang! Bang! Bang! ”

Pierce, the world's top sniper from BSAA, holds an electromagnetic heavy semi-automatic sniper rifle, constantly showing his excellent dynamic vision, blasting those red-eyed zombies that jump down in mid-air.

Taking advantage of the interval between changing magazines, Pierce shouted at Li Nan, "Captain, why don't we enter the thirty-sixth floor to defend?" The terrain here is too passive! ”

Li Nan was not a fool, of course he also knew that everyone was now in a bitter battle and constantly suffered casualties, all because of the terrain, but looking at the long metal corridor in front of him, the uneasiness in his heart did not diminish at all.

Opening the team channel, Li Nan said loudly to everyone: "I have asked Quint to check this corridor as soon as possible, and everyone will continue to defend before he confirms that it is safe!" ”

As Pierce shot, he shouted angrily, "F**K! So many people have already died, what are you waiting for? ”

Chris, who had experienced the first Resident Evil in Raccoon City and had seen all kinds of terrible mechanisms in the hive, spoke up in support of Li Nandao: "Pierce, be quiet! Li Nan is right, no one is allowed to enter the corridor until it is confirmed that it is safe! ”