After spending about a day, Qin Fei and Xie Nanai walked to the Pais camp located in the desert.

The white flag that had been floating above the camp was no longer visible.

The logs on the perimeter of the camp were also scattered all over the ground.

This wooden wall must have been breached by zombies in the zombie tide.

Far away, Qin Fei saw some of the conditions inside the camp....

In the camp, in addition to a small number of zombies still wandering around, there are also more than a dozen dormant zombies lying on the ground.

Among them, Qin Fei even saw a few green-skinned zombies.

This should have been left over from the previous wave of corpses.

Because of the existence of those green-skinned zombies, Qin Fei and Xie Nanai did not enter the camp to search for the materials inside.

A green-skinned zombie Qin Fei and Xie Nanai can still deal with it, but once there are too many of them, it is better to bypass them directly.

Let's not talk about whether you can fight or not. These green-skinned zombies have rough skin and thick flesh, and even if they can beat them, killing these zombies will waste a lot of ammunition.

Pay for one's whistle.

In fact, the fall of Pais's camp was also something Qin Fei expected.

The game is set shortly after the end of World War III.

After the end of the war, there was not much left.

And those survivors who can survive have almost no experience in defending against these sudden outbursts of corpses after the war.

So unless it is some organized army, it is difficult for ordinary people to withstand the attack of the corpse tide.

As time goes on, the number of survivors in the Navigan region will surely only decrease.

Since there was no camp to join, Qin Fei could only find a relatively sturdy building to survive the last wave of corpses.

The best option at the moment is the kind of bunker that is built deep underground.

Hiding in a tall building will definitely not work.

If Qin Fei hid on the top floor of the tall building, and then destroyed the stairway upstairs. These zombies really can't go up.... However, they will attack the lowest floor.

In the last wave of corpses, there must be a lot of zombies.

It is estimated that in less than one night, they will be able to destroy all the load-bearing structures such as walls and foundations on the first floor.

At that time, the entire building will collapse because of the loss of load-bearing, and Qin Fei and Xie Nanai are estimated to either fall to their deaths or be bitten to death by zombies pulled out of the ruins.

But hiding underground is different.

The load bearing of the bunker is at the bottom. If the zombies start digging from the top floor, the bunker will not collapse like a tall building.

As long as the fortifications built underground are strong enough, it is estimated that it is not impossible to survive until the end of the blood moon.

Even if Qin Fei and Xie Nanai were trapped underground by zombies in the end, with no way to escape, as long as they lasted until the fiftieth day, they could be directly teleported back to the real world.

The tall buildings on the ground may be visible at a glance.

But bunkers are very difficult to find.

At least not in the two towns where Whitewater River and Pais's camp are located.

According to Qin Fei's game experience, on the snow-capped mountains in the northern region of Navigan, there should be an underground research institute dedicated to the study of zombie viruses.

Of course, that's in the game after all.

As for whether there is one in this world that Qin Fei has traversed, it is unknown.

But the snow-capped mountains in the north are still worth a visit.

After all, Qin Fei didn't have a better choice at the moment.

The snow-capped mountain that Qin Fei was going to was the northernmost part of the Navigan map. And the desert area where he is now is the southernmost part.

Walking to the Snow Mountain, it took Qin Fei and Xie Nanai a total of three days.

The Virology Research Institute of Snow Mountain is located on the top of its mountain, which is extremely high.

Because of the high location, it is not very difficult to find.

And on the ground of this institute, there is a house that looks like a Western Gothic building, with a minaret on the roof, which is easily recognizable.

It took only half a day for Qin Fei to find the Snow Mountain Research Institute.

The houses on the surface above the institute have a total of three floors. From the outside, this house is no different from an ordinary villa building.

If it weren't for the fact that Qin Fei is a veteran player of Seven Days Kill, he knows some of the settings of this game very well. It's really impossible to see that underneath this villa there is an underground research institute.

There are also some dormant zombies in this villa.

Qin Fei was now wearing a suit of military armor, and both he and Xie Nanai had shotguns to use. With the help of the system's yellow dots, the zombies in this room were quickly cleaned up.

On the third floor of the house, there is an elevator entrance, which is supposed to be the passage from the underground research institute.

The car of the elevator stopped at the lowest level, and it seems that the elevator is no longer usable because there is no power supply.

Therefore, if they want to go down, Qin Fei and Xie Nanai must be hung with ropes and climb down from the elevator room on the third floor little by little.

Qin Fei glanced down from the elevator room... The depth of this research institute is at least about ten meters underground.

What is the concept of ten meters?

The first floor is almost more than three meters high, and the depth of more than ten meters is equivalent to the third floor of a building.

Coupled with the three-story villa on the ground, that is to say, Qin Fei and Xie Nanai need to climb down to the height of six floors before they can go down.

It is actually not difficult for a person to hang down from this height along a rope. But if you try to climb up again, it's almost impossible.

It's going to get dark now, and if you go down at this time, if you fall directly into the zombie pile underground, you will probably be killed directly by those zombies.

To be on the safe side, Qin Fei and Xie Nanai stayed in this building for one night.

Day forty-nine.

This morning, the sun in the sky did not appear as usual.

Although it was daytime, there was a dark purple full moon hanging in the sky, and even the entire sky was dyed this strange purple by this moon.

Because there was no sunlight, it was gray outside, and it was too far to see.

A task prompt appears on the system interface.

[Main Mission: Survive for 50 days in the Seven Days Kill game world!] 】

[Judgment Day has come!] Survive the last wave of corpses and return! Countdown: 23 hours and 10 minutes】

Time was pressing, and Xie Nanai began to prepare the rope to climb down the elevator.

Because there is not such a long rope, it can only be tied together with sheets, cloths, fishing nets and other items to form a long enough rope.

Before going down, Qin Fei installed an explosive bag at the entrance of the elevator room, which was removed from the chest of the self-detonating zombie.

After putting on the gloves, Qin Fei and Xie Nanai climbed along the rope to the bottom of the elevator room.

After coming to the ground at the bottom, it was not as Qin Fei thought, he was immediately surrounded by a large group of zombies.

There aren't many zombies here.

Near the exit of the elevator room, there are only a few dormant zombies.

After eliminating all the zombies at the exit, Qin Fei used his pistol to detonate the explosive bag on the top of the elevator.

In an instant, countless clods of earth and steel fell from above.

This explosive pack on the chest of the self-detonating zombie is quite destructive to the building. With just one bomb, the entire elevator hall was blown up.

The entrance has been completely buried.

Whether Qin Fei wanted to escape again, or the zombies outside wanted to come in, it was not something that could be done for a while.