The process of demolishing the exterior walls was simple, not to mention the two layers of logs, but all the earthen walls were packed in fiber bags, which I had found a lot of in the search of the eastern town. Pen "Fun" Pavilion www.biquge.info

So at this moment, what Mu Shaoan and they had to do was to tear down the outer wall, drag down the bags full of dirt, and put them back outside the main building of the base.

Everyone panicked, because even Mu Shaoan, who had never been too lazy to do these things, was involved, which showed how serious the situation was.

More than 30 people got started together, regardless of men and women, in fact, the four-dimensional attributes of the current people have been strengthened a lot, and it is not too easy to overturn two ordinary people, so this demolition speed is also amazingly fast.

In less than two hours, the first and second floors of the main body of the base were sealed with a vast amount of dirt bags, and the thickness reached five meters, which was honestly thanks to the strong accumulation of Base 21 in the past.

"Continue to pile up, seal the third floor, etc., leave a few shooting ports, don't worry about the rest, the wooden wall is too late to be demolished, hurry up!" Mu Shaoan urged loudly, because he suspected that the eagle boss had already pounced on it with its zombie bird army, these bird zombies would not have any impact on the overall defense of the base, but they could constantly harass them, so that they could not get out, and when the time came, there would be a wave of corpses, and everything would be over.

Everyone was throtting all the way, and the invisible fear gradually enveloped their hearts.

Seeing that the third floor was about to be blocked, Mu Shaoxin suddenly felt something, and suddenly turned his head and looked in the northwest direction, and saw a large cloud of dark clouds sweeping rapidly from that direction, there were too many!

"Quick, everybody, go back!"

Everyone else also quickly discovered this scene, and everyone changed color for a while, and several female program soldiers even cried in fright, which can't be blamed on them, the scene is really terrifying, as if the doomsday is coming!

For a while, everyone cried and screamed, pulling each other, climbing the earthen wall in great embarrassment, drilling back from the shooting port left on the third floor, and almost at the same time, the faint thunderous birdsong also roared, and the storm even gave people the illusion that the earth had collapsed!

Mu Shaoan was left at the end, at this time he was already holding a shield with a knife in his hand, and in the face of such a terrifying impact, he did not dare to confront it head-on, but he took this opportunity to see those zombie birds clearly.

It wasn't the kind of ordinary bird zombie he saw more than twenty days ago, taking the black crow as an example, each one had doubled or even tripled in size, with more powerful wings and sharper claws, and it had definitely evolved to Type 2.

Soon, the world as black as ink came, nothing could be heard in the dark, nothing could be seen, Mu Shaoan only felt that in an instant, hundreds of claws grabbed him,

He could only use a wooden shield to protect himself, and at the same time leaned against the wall, not daring to move, for fear of being caught by those zombie birds.

After a full five or six minutes, the dark tide swept over, as if it was showing off its might, constantly hovering high in the sky, like a black tornado.

But the 21st base was a mess, I don't know how many birds and zombies rushed in, and everyone was scratched without exception, if it weren't for all of them taking virus serum, just this one round, they would have been wiped out.

Spit out the bird feathers in his mouth, Mu Shaoan raised his head and looked at the sky with a gloomy face, he really didn't expect that more than twenty days ago, because of an negligence, it would lead to such a terrifying result.

That eagle must have evolved, evolved into a type 5 virus evolution, and is only one step away from evolving into a virus, and looking at this situation, it is a hundred times more difficult than that Sadako zombie, because it can fly!

At this time, Mu Shaoan tried his best to search in the sky for a long time, but he didn't see the eagle boss, but those zombie bird legions circled and swooped down again.

"Everyone, prepare for battle, don't shoot, light torches, be careful not to get hurt by mistake!"

Mu Shaoan yelled, took a step back, and entered the place at the door of the third floor, Rao was confident that he didn't dare to confront this group of zombie birds in the open space.

In just a few seconds, the zombie birds swooped down from the sky like a small fighter jet, and the virus infected body was as fierce as death, Mu Shaoan was ready to use a wooden shield to resist, seeing this scene, he hurriedly retracted back, Nima, what are you kidding, this kind of dive, three or five are okay, hundreds or thousands of them are smashed down at the same time, no one can stand it!

"Puff puff!"

Flesh and blood splashed, many bird zombies were killed directly, but there were still some bird zombies quickly turned, instantly pounced into the interior of the third floor, and for a while it was screaming again and again, all along, only good at remote program soldiers where to experience such a battle, and in such a dark environment, for a time was attacked in a hurry, in a panic someone shot, this is the worst, shooting in such an environment, it is tantamount to suicide.

"Go back, retreat to the second floor!" Mu Shao'an could only order a retreat, fortunately the concrete compartment he ordered to build four days ago had been built, so unless it was the eagle boss who came, the other bird zombies didn't want to help them anymore.

It's really a chicken feather, extremely embarrassed, after a long time, after everyone withdrew to the second floor, Mu Shaoan asked them to block the entrance with a Nepalese scimitar, and he stayed on the third floor alone, no way, in such a dark situation, only he has the strength to fight.

Bird zombies are still rushing in in groups of brainless, but there are not many of them, Mu Shaoan can probably guess what the eagle boss is trying to do, it wants to trap them completely, and then wait for the arrival of the corpse tide, when the time comes, dozens of type 4 virus bosses can easily tear down their base defenses, and at that time, it will really be a dead end.

Exhaling lightly, Mu Shao'an stood in place, did not attack, just waiting, at this moment the time had reached about five o'clock in the afternoon, the sky was already dark, and there was a tide of zombie birds outside, and it was completely dark on the third floor.

But he couldn't see it, and neither could the zombie birds that came in with the death rush, they just rushed in and hit indiscriminately until they died.

So although this situation was chaotic, it didn't bring much trouble to Mu Shaoan.

Just when everyone breathed a sigh of relief, huge black shadows fell silently from the sky, they were no longer as headless and brainless as the previous bird zombies, but flew quite flexibly, and easily flew in from the entrance of the third floor.

"It's a bat!"

As soon as Mu Shaoan realized this, he felt that half of his face was in sharp pain, without warning.

Just this time, he directly lost 10 points of health, and this claw is too sharp.

Is it a Type 3 Bat Zombie?

This thought flashed through his heart like a flint, how dare he be careless, according to his memory, he rushed to the corner, and kept waving the Nepalese scimitar, but nothing was cut, these bats were the size of a dustpan, and the number of rushing in was at least more than twenty, but they were silent, flying fast and dexterous, and they were not afraid of colliding with each other at all.

Soon, there was also a scream from the second floor, and apparently some of the bat zombies also rushed in.

But at this time, Mu Shaoan himself was helpless, he had never encountered this kind of opponent, no matter how fast his Nepalese scimitar swung it, it seemed that he could be dodged in advance by an unpredictable prophet, this feeling of nesting almost made him vomit blood.

In less than a moment, he had four or five terrible wounds on his body.

(Thank you for the past that the book friends will not go, Tianwenzhi, Yuan Yuan hanging fat, wind and rain sword, wood easy flow wind, etc., thank you for your recommendation and collection!)