In order to ensure safety, the wounded did not retreat from the spiral staircase where the blocking position was located to the rooftop, but took the spiral staircase that had been blown up.

After the evacuation order was given, the soldiers quickly moved into action, carrying the seriously wounded and the lightly wounded walking on their own, and retreating to the rooftop as quickly as possible.

The faster they are, the shorter the holding out will be.

There were also insect swarms waiting under the blown up stairs, but the stairs were blown up very thoroughly, and the seventh floor and below were almost completely destroyed, and the insects could only stay on the first floor and sigh.

There are also stinging bugs that try to spray bone spurs at the evacuating team, but the height difference is too great, and the bone spurs must be sprayed straight upwards to have a chance of hitting the evacuated humans.

However, limited to the physiological structure of the neck, the head of the stinging insect can only be raised to about 70 degrees at most, and the bone spurs spit out from standing on the first floor can only be pierced on the wall of the fourth floor at most, and no matter how high it is, it can only be looked at dry...... Their eyes are much more flexible than their necks, and they have no problem seeing anything directly above.

The stinging insects failed to achieve their goal, and the swarm still refused to give up, and more and more insects gathered under the blown up stairs, layer on top of each other, and climbed up by stacking arhats - the insects were good at climbing walls, but the walls inside the fortress building were not as rough as the outer walls, and it was not so easy to climb!

However, it is advantageous for the bones to grow on the outside, they lie dead on the wall, climbing up layer by layer, and in a short time they have climbed to the fifth floor!

Although it is only one layer higher than the bone spur, but the bugs are still continuing, is it difficult to climb two more floors?

The actions of the swarm fell into the eyes of the evacuating team, and at first they were deliberately ignored, but the insects couldn't be ignored when they reached the fifth floor.

Faced with the fact that each of the evacuated teams had a part dedicated to the battle, the fighters did not shoot, but fired grenades at the layers of bugs below.

And the fighters are not aiming at bugs, but at the ground on the first floor!

Aiming at the bugs can only kill the bugs, but aiming at the ground can destroy the foundation of the stacked arhats!

After several explosions in succession, the giant insect at the bottom was either dead or injured, and could no longer hold the insect on the top, and the insect tower that was about to be stacked to the sixth floor collapsed instantly, and the giant insects on the wall crackled and fell down, only a few giant insects reached the place where they landed on the wall, as if grasping a life-saving straw and clasping the bulge on the wall.

One soldier raised his gun and was about to open fire, but the other held down his rifle: "Let them hang, tired girl!" ”

The soldier put down his rifle and did not kill the giant insects hanging on the wall, and followed the team and hurried to the rooftop.

But he was worried that the swarm would come up again, and after going up two more floors, he placed the two mines he was carrying on the stairs.

The others were learning from each other, and in a few moments there were a dozen mines on the stairs...... If the bugs don't chase up, forget it, if they really catch up, you have to taste what the mines are like!

While the defenders retreated to the rooftop in three directions, Kong Jie and the other soldiers in charge of the broken rear remained in their positions.

When the evacuation order was given, the soldiers had just beaten back the attack of the swarm, and the next round of attack by the insects had not yet begun, and the atmosphere on the position was quite relaxed.

However, the evacuation from other directions quickly attracted the attention of the swarm, and although it was not ready to attack again, the swarm still launched an assault on the position.

The battle soon began, and the man and the insect fought to the death.

Probably because of the lack of preparation of the swarm, the intensity of the attack this time was far less than the previous times, and the pressure of the fighters was far less high than the previous times, so it didn't take much effort to block the swarm downstairs.

Soon after, the blocking team received an order from Company Commander Tong to retreat, and everyone evacuated their positions in turn, blowing up the stairs after everyone left.

The staircase detonated without incident, but the explosion was confined to between the seventh and eighth floors, and only a short section of the staircase was destroyed.

The explosion halted the battle, and Kong Jie and his comrades rushed to the rooftop, the swarm blocked by a broken staircase on the seventh floor.

As the warriors ran, they couldn't help but look down, only to find that the insects were gathering at the broken staircase, stepping on them one by one, and looking at the meaning, they were going to use the insect bridge to connect the broken staircase.

The fighters were suddenly in trouble.

The staircase is only broken by one floor, and with the ability of the insect swarm, it doesn't take much effort to build a insect bridge, and if you don't leave it alone, the insect swarm will soon be able to catch up.

A few warriors turned their hearts sideways, picked up their guns and opened fire on the insect bridge that had just begun to be built, but this bit of fire could not stop the insect swarm at all, and the insect bridge still extended upwards little by little.

More warriors joined in the shooting, finally stopping the extension of the Worm Bridge, and the warriors cut through the Worm Bridge with a dense barrage of bullets until all the giant worms fell.

But the swarm is still climbing upwards regardless of life and death, and it won't be long before the swarm will reappear.

As soon as a few people discussed, they simply didn't retreat, just stayed here and continued to block the swarm.

Company Commander Tong on the rooftop couldn't wait for the troops to break off, but heard a dense gunfire from the stairwell, and almost rushed to become an ant on a hot pot.

After asking what was going on, Company Commander Tong also hesitated.

His first instinct was that he had to block the swarm, so someone had to stay!

Company Commander Tong immediately ordered the soldiers to set up a blocking position on the spot, and then gathered the soldiers on the rooftop, ordering everyone to leave only one live ammunition magazine, and the excess ammunition must be handed over and sent to the blocking force as quickly as possible.

If it was possible, Company Commander Tong really wanted to blow up all the remaining stairs, but he had already used up all the explosives.

In order to withdraw the blocking troops as soon as possible, Company Commander Tong quickly contacted the command center, hoping that the command center would find a way to support a batch of explosives.

Funing did not lack that bit of explosives, but there were no extra explosives in the nearby fortress buildings, and the nearest reserve was also a kilometer away, so there was no way to send it in a short time.

Company Commander Tong immediately explained the situation here to the command center, emphasizing that there was still a group of soldiers left below to block the swarm.

In this regard, the attitude of the command center is very clear, the fighters must be withdrawn immediately, and they must be blocked and fought on the rooftop, at least the rooftop can get fire support from several nearby fortress buildings.

Company Commander Tong suddenly realized, and immediately issued a death order to the blocking troops to withdraw immediately, but he was not the kind of rigid person, and while giving the order, it also explained the advantages of the rooftop blocking.

Kong Jie and the others, who received the order, hurriedly withdrew from the battle and retreated to the rooftop as quickly as possible.

Running the steps is very physically demanding, even with bare hands will be very tired, and the soldiers are carrying heavy equipment, the physical consumption is even greater, and after not running a few floors, they are already out of breath.

But no one dared to stop, because the worm bridge could be built at any time, and it must be removed to the roof as soon as possible!

When they rushed out of the stairwell, the warriors who had retreated to the roof were ready, and the warriors formed an arc around the main entrance of the stairwell, and hundreds of rifles were pointed at the door.