Yu Changsheng was alert to find that the situation was not good, and immediately grabbed the assault rifle beside him, and suddenly woke up his teammates who were still sleeping on the side, and before he had time to explain too much to him, he directly ripped open the door and rushed out.

He had heard such a sound more than once when he was traveling around the city, but whenever this strange sound sounded, the meaning it represented was full of death and fear. About a hundred meters outside the hall, there is a wall with two guards standing next to it, which is also the closest sentry to the activity center where everyone rests.

The night was still a little weird, and Yu Changsheng could clearly see the situation two hundred meters away without obstacles blocking his vision, however, when he crawled over, he found that the two shadows in the distance did not look like his teammates.

A pungent fishy smell wafted through the air, and two fleshy ball-shaped monsters with huge wings were gathering there, a pile of minced flesh and unspeakable bones mixed together, munching on the mouths of these two disgusting things.

"Damn, it's really this kind of thing."

Yu Changsheng was still too late, he wasn't sure if those two flesh-and-blood people still had a chance of life, but he didn't have time to think too much, he immediately loaded the bullet, slammed the trigger, and aimed at the two ugly monsters.

The bullets erupted from the muzzle, with a powerful impact, instantly pierced the bodies of the monster and the dead teammates, and at the same time, the sudden gunfire frightened everyone in the hall, and the armed militiamen were all scattered in the hall, and after hearing the gunshot, they picked up their weapons one after another and rushed in the direction of the gun.

A few minutes later, Yu Changsheng had gathered more than a dozen heavily armed militiamen around him, although these people were all equipped with excellent equipment, but their combat quality was far from being comparable to the regular army or even ordinary militiamen, especially in the face of this sudden situation, they all seemed a little helpless for a while.

But at such a critical juncture, Yu Changsheng no longer needed to give any orders, and everyone present knew what they should do. In an instant, in the narrow area at the entrance to the center of the event, more than a dozen assault rifles attacked like a storm, forming a line of death that the enemy could not cross.

The monsters were instantly annihilated by the gunfire and let out a terrible howl.

"There aren't so many people here. Second, the third team is back in the activity center and immediately closes all doors and windows. Double-check all the corners, there are definitely more than a few of these guys! Yu Changsheng ordered.

The men immediately returned to the Great Hall and examined one by one, and soon found that in the corner that no one was paying attention to, a round-headed monster with a ring was squeezing through an extremely narrow hole, and what was even more frightening was that there seemed to be a considerable number of monsters approaching outside the wall.

They were smashing the edges of the walls, as if trying to expand inward, and some of the cracks and window edges of the walls were already creaking for help.

"The heads of these monsters are their only weakness, don't waste bullets, concentrate on attacking their heads." After a loud response, although these militiamen were not well-trained, they were still able to follow Yu Changsheng's arrangement, and immediately changed the way of attacking, and the frequency of bullet fire also decreased.

Although Yu Changsheng knew that the amount of ammunition was sufficient, he still hoped that these people could shoot as accurately as possible, rather than just shooting a bullet out. After all, the only way for these murderous monsters to let them die is to wear them completely. What's more, at this time, these people have formed a tight firepower network, and they can barely resist the attack of monsters, but once this firepower network is torn apart, individuals who fight alone, the slightest shooting deviation, may leave a fatal opportunity for these monsters.

These monsters in front of them, compared with the big monsters they have encountered before, their shape is very similar to a leather ball, or a bit like the evil ghost Di Jiang, but they only have a pair of wings on their bodies, and their bodies are not as big as Di Jiang's size, fortunately, the single attack power of these monsters is not strong, and the attack method can only approach the target at a close distance, and then attack, these monsters' big mouths are full of sharp teeth, if it is just one-on-one, they are not human opponents at all.

Just looking at their appearance, as long as you make a handle, you can shoot them into meat sauce. But these monsters seem to have a high IQ, they are very aware of their weaknesses and have never had a head-on confrontation with humans. They usually wait until nightfall, or when people are at their most relaxed, to attack en masse, opening their terrible mouths and biting off the heads of sleeping people.

But Yu Changsheng's biggest concern is not this, but the number of monsters is too amazing, they seem to have social habits, as long as they appear, there will definitely be a large group of monsters. On the ground outside the activity center, there were a large number of bloody monsters lying horizontally, estimated to be at least fifty of them, but Yu Changsheng looked up at the sky, those monsters flapping their wings in the sky had already covered the sky, and the density was so great that there was almost no gap to be seen.

These ugly meatball monsters are not afraid of death at all, and eating all the people in the auditorium is their only purpose.

"Don't attack blindly, there are too many of these guys! Pay attention to cooperation! Yu Changsheng shouted again.

This time, the militiamen who had already killed themselves could no longer hear Yu Changsheng's shout, Yu Changsheng shouted loudly again, these people heard Yu Changsheng's shout, and immediately responded, but the movements in their hands did not change much.

Yu Changsheng frowned, he knew very well that those current militiamen at the gate were enough, but they were all a group of untrained novices. They don't have any concept of a coordinated attack, they just shoot aimlessly into the air, and in this way, the network of fire becomes very extreme. The web of fire formed by these bullets may seem irresistible, but in fact it is quite dangerous.

The weapons used by these militias are all assault rifles, even if they are all fully loaded with magazines and 60 rounds of ammunition, at the highest rate of fire, such a strong rain of bullets has a great impact on the monsters, but the embarrassment is that the time for these militias to attack should be the same, and the weapons are also the same, which makes them likely to replace bullets at the same time, even if there is a partial time difference, it will also be in a certain period of time, because most people change bullets at the same time, and there is a large loss of firepower.

If a few seconds ago, Yu Changsheng's worry was just a vague thought, but now, it has completely turned into a terrible reality that has happened.

A young man stood in the middle of the crowd, and it was when the bullets were being replaced, because of the lack of necessary fire cover, this monster flying in the air immediately found the right time, swooped down directly, and with its sharp teeth, instantly cut off the connection between the young man's neck and his head, and took his entire head into his mouth.

Satisfied with food, it slowly floated into the air again, leaving only the young man's shoulders to support and halting its dead body.

"Damn!" The monster was too close to attack with a rifle, so Yu Changsheng immediately pulled the white wolf pistol out of his waist and pulled the trigger.

With a bang, the bullet undoubtedly pierced the monster's head, and a disgusting smell immediately filled the air.

"Don't panic, everyone, stick to your position, one group, two groups, three groups, you immediately change the bullets, the other groups then cover the fire, the replacement is completed, the other groups are replaced, one group, two groups, three groups cover!" Yu Changsheng had never learned the technique of commanding, and there were no standard orders, but he still tried his best to express his thoughts clearly.

But as the young man was devoured by the monster, the militiamen's psychological defense line had completely collapsed, and the guns in their hands to protect themselves had been shot one after another, and they couldn't even remember how many groups they were, and they couldn't quickly carry out Yu Changsheng's orders. After just a few minutes, several defenders left like young men. To make matters worse, it was raining heavily in the sky at this time, and such a sudden change of events provided a perfect opportunity for these monsters caught in the fire.

Yu Changsheng also quickly realized that the plan he just said was indeed a bit too complicated for these people who were already in a mess, so he immediately shouted at the crowd:

"In groups of three, alternate magazines."

The number of militiamen outside the activity center plummeted, so much so that each group could only be reduced to four.

"Quick, tell the people inside to build a wall with bricks on the ground, hurry!"

Yu Changsheng knew very well that with his current strength, he could not stop the attack of these crazy monsters at all, and his only way out now was to retreat to the hall. But before that, you'll have to build a thick wall inside the door, using the various materials stacked in the hall. With such support, there is no big problem in holding on until dawn.

These monsters seemed to be very afraid of the sun, at least Yu Changsheng hadn't seen these monsters in the daytime.

At this time, in the face of the strange screams and crackling bullets outside, the women in the room were terrified to the extreme, and some of the timid people had even begun to cry. The endless fear, and the desire to survive, and the helplessness of being overwhelmed, have made it impossible for these people to remain calm, and they can only choose to express most of their inner feelings in this most fragile and simple way.

The corners of the room were littered with a large amount of masonry and dozens of bags of lime bags, which were enough to clog the entrance to the activity center, but I didn't know if there was still time.

But the threat of death may be felt! A few shivering women, sitting in a shivering position, suddenly jumped up from the ground, frantically moved heavy bricks out of the corners, and helped the workers build the foundations of the wall near the door. It's astonishing how fast they move.

No one wants to die.

At their instigation, almost all women have taken action.

Smashed tables and chairs, tiles on the floor, and everything that people carry with them...... All in all, everything that can be used is concentrated at the door.

Soon, a thick, broken, but very strong wall finally miraculously appeared.