There are two entrances to the headquarters, one is on the south side, which is relatively large, and the door is locked, so zombies can't enter for the time being. Plugging it with a rover won't be a big deal.

On the west side, the original door had been destroyed by Hao Aiguo, Bai Yutian and others when they broke the door. Gou Ke and Chen Zichen held a simple shield made of aviation materials and a JS9 submachine gun to block the zombie attack temporarily, while the others quickly collected metal tables and chairs on the first floor and transported them to the second floor.

The group of lost people who reacted quickly regrouped and rushed towards the command headquarters. First came a few bone javelins. Bang Bang smashed two grooves into the shields of the two and spread them out. In addition to proving the reliability of military aviation materials, it also allowed Gou Cao to experience the power of the bone javelin.

When the body was pierced by a javelin before, Gou Ke did not have enough knowledge of the power of this weapon. But after receiving a shot with his shield, he realized how terrifying the javelin was thrown. The robotic arm barely even held up.

Gou Cao used a mechanical arm to hold a shield, and Chen Zichen was even more miserable. Suddenly he didn't catch the shield that was repelled by bone spurs and hit his forehead, and his arm looked injured. Another survivor who looked stronger but didn't remember his name immediately stepped up to take his place.

However, this time, the zombie seemed to be preparing to attack, and did not stop at a distance of sixty meters to fly a kite, but approached straight up.

......In order to suppress the zombie throwers and prevent them from making continuous throws safely, Gou Ke and the survivors had to perform short-burst suppression without being able to guarantee accurate hits and headshots.

Seeing this, the lost group changed its formation so that the ordinary zombies stood in front of the zombie throwers, and the bullets only hit the bodies of a few miscellaneous fish zombies, causing a burst of black blood mist, and there were no headshots, so there were no kills. But in this way, the pressure on Gou Cao and the survivors was suddenly alleviated a lot.

"It's okay, let's retreat" Just when the zombie group was gradually approaching, and Gou Cao could smell the strong smell of corpses on their bodies, Bai Yutian shouted.

"Withdraw!" Gou Cao heard this and gestured to the shooter. After two rounds of suppressive firing at the zombie thrower, he retreated with his shield as he fired, and soon retreated to the staircase leading to the second floor.

The new survivor secured two metal tables at the top of the staircase on the second floor, and then Gou Ke and the shooter withdrew and attached their shields to them, forming a half-human-tall bunker.

At this time, the lost group also quickly poured into the first floor, and then quickly rushed to the staircase on the first floor. However, because the staircase is relatively narrow, there are not many lost groups that come up at one time. The survivors were divided into two groups, one wave continued to block all the windows on the second and third floors to prevent the zombies from climbing the wall to enter, and the other wave closed in the bunker at the staircase to shoot.

"Bang, bang, bang......" The sound of several three-zero pistols firing came and went. Although they have been besieged by corpses and are not afraid of being discovered, if they shoot indoors, if there is no shooter to use earplugs, the gunshot can easily damage their hearing, so everyone still did not remove the suppressor.

The staircase is in the shape of a back, and in this terrain, if you want to attack the second-floor staircase, you must also be exposed to the range of the second-floor pistol. As if understanding this, none of the zombie throwers ever appeared at the top of the staircase.

Without the suppression of long-range firepower from zombies, shooters are able to use the maximum power of their thermal weapons, giving them plenty of time to aim and shoot. The zombie that rushed to the corner of the stairs was killed by a headshot almost as soon as it showed its head, and then rolled back to the first floor with a soft collapse.

The battle lasted for more than twenty minutes, and the zombie corpses downstairs gathered a lot, piled up into a small mountain, almost blocking the entrance to the second floor. So soon, dozens of zombies began to move the corpses, and a few of them seemed to have failed to resist the temptation of instinct, stopping from time to time to take a few bites, which made people feel sick to their stomachs.

"It's now!" Gou Ke shouted.

Soon, after everyone had put on their protective masks, several Molotov cocktails were ignited and thrown down. landed on the pile of corpses, and soon set the pile on fire.

The surface of the human body will quickly dehydrate and wax after the zombie is transformed, causing it to become flammable, so soon after being ignited, the corpse pile fire quickly becomes quite vigorous. By the way, he set fire to several zombies who were carrying corpses. These zombies scurried with flames, and soon ignited the other zombies that were unfortunately hit by them, and under the chain reaction, the formation of the corpse group was quickly disrupted.

However, while hindering the loss group from continuing to attack, the air in the staircase was quickly warmed by the burning flames, and everyone was drenched in hot sweat, and the hot air also made many people's respiratory tracts feel serious discomfort.

"Withdraw!" Of course, Gou Ke would not have thought of this situation, and the windows and stairwells on the third floor had already been set up with bunkers and obstacles, so when the staircase on the second floor was not suitable for staying, everyone had to withdraw to the third floor to continue to resist.

At this time, the shield fixed at the staircase on the second floor had also been heated to a fairly high temperature, and no one else could touch it, so it was only removed by Gou Cao and taken to the third floor.

After setting up the bunker at the staircase on the third floor, the four people were left behind the staircase bunker in a shooting position and waiting for the zombies to rush up. Bai Yutian, Chen Zichen and the other three shooters were on standby on the third floor, while Gou Cao and Hao Aiguo went to the top of the building with shields and two other shooters to prepare for battle.

Sure enough, shortly after gunfire rang out at the staircase, gunshots began to sound near the third-floor window. It didn't take long to see two zombies crawling up from the edge of the roof.

Seeing that the strong attack failed, it was replaced by a multi-faceted attack, Gou Cao secretly frightened himself, these zombies not only have stronger physical strength than ordinary zombies, but also have improved intellectually, and they have begun to think about solutions to problems. If you hadn't been prepared and continued to guard the staircase, you would probably suffer a big loss.

It's only been a few months, and the strength of the zombies has increased so much, I'm afraid it will be even more difficult to deal with in the future.

Having settled down, Gou Cao killed the zombies who climbed up first with two short shots, and the others also began to shoot in their own combat positions.

Before solving the longer-term problem, you have to destroy the enemy in front of you.