Crossing the wilderness to survive, starting with a broken kitchen knife.

Cannons and various bows and arrows followed.

The Suicide Zombies were too large, making them easy targets for concentrated fire. However, their skin was extremely tough, and not everyone in the shelter was a sharpshooter. Many arrows and shrapnel couldn't even damage them. Many Suicide Zombies still rushed to the foot of the wall and self-destructed.

"Boom boom boom!"

A series of explosions made Zhang Shi, who was standing right above, dizzy. Fortunately, Wu Qing's luck burst out at the critical moment, triggering the taunt totem and putting up a layer of protective shield for the wall, which offset part of the shock wave caused by the explosion. Otherwise, with the number of self-destructing zombies, it is hard to say whether the wall can withstand such a high-intensity impact.

Zhao Feng worked hard to pull the heavy crossbow and shoot at the mutant zombies. Often, one crossbow arrow could kill two or three mutant zombies standing close to each other. However, facing the huge number of mutant zombies, his killing efficiency was just a drop in the bucket, and his physical strength gradually ran out with the high-intensity battle.

Ge Dalong's ice magic has more of a restrictive effect than a damaging effect on these mutated zombies that are not afraid of pain.

Zhang Shi tried to use water attack, and although he successfully blocked a large number of ordinary zombies, those mutants were able to overcome their fear of water and continued to attack regardless of the corrosion of their flesh.

The situation on the battlefield intensified. Despite the power of their artillery and heavy crossbows, each shot was like a pebble dropped into the ocean against the surging tide of zombies, its ripples quickly swallowed up. While Ge Dalong's ice magic could slow some zombies, the mutants seemed to possess a willpower beyond humankind. Even covered in frost, they struggled forward, seemingly impervious to pain.

Just when the battle reached a stalemate, a flash of lightning suddenly appeared in the sky, followed by a loud thunder across the sky, briefly dispelling the red light of the blood moon.

A moment later, a patter of raindrops began to fall, landing on the zombies, corroding their flesh like strong acid.

The rain, like a divine intervention, brought an unexpected turn of events to a battle on the brink of crisis. The rain not only corroded the zombies' flesh but also acted like a disinfectant, nature's own creation to eradicate the zombie virus. A faint, refreshing, and austere aura permeated the air.

Those mutated zombies that were originally not afraid of pain began to show human-like expressions of pain under the washing of rain. Their movements became slow, and some zombies even let out shrill wails in the rain. Their bodies gradually shrank, as if they were deprived of their vitality by some mysterious power in the rain.

What was even more shocking was that the red glow of the tumors on the chests of the mutated zombies gradually dimmed under the erosion of rain, the flashing frequency slowed down, and eventually went out completely. It was as if the worms in their bodies were destroyed by the rain, losing their vitality and no longer able to control the zombies to attack.

Zhang Shi was overjoyed upon seeing this. He immediately realized this was the perfect time to strike back. He shouted, bolstering morale: "Everyone, hold on! This is our chance. While the zombies can't resist, fire with all your might and completely eliminate these monsters!"

Zhang Shi grew braver with each battle. His White Tiger Black Light Armor boosted his stats, making killing zombies as easy as mowing grass. Under his leadership, the soldiers' fighting spirit was fully ignited. No longer afraid, they attacked the zombie hordes with even greater ferocity. The roar of artillery and heavy crossbows blended with the sound of rain, forming a passionate war song.

Ge Dalong was not to be outdone. He cast ice magic again. This time, frost and rain combined to form slippery ice surfaces, making it difficult for the zombies to stand. They fell to the ground and became living targets for the soldiers.

Wu Qing's spiritual plants are more lively in the rain.

The vines, like wandering dragons, entangled the lone zombies one by one, then tightened their grip until their bones and tendons were broken. The corrosive effects of the rain further accelerated their death.

The giant sunflower had been focused on fighting the Titan zombies. But since the sudden rain, the Titan zombies had clearly retreated, and many had even retreated into their caves.

Sunflower obviously also knew the principle of kicking a drowning dog. Although the flames of the laser sweep were washed away by the rain and greatly reduced, they were still able to cause considerable damage to the Titans.

As time went on, the zombie hordes began to dwindle noticeably, their attacks becoming increasingly weaker. Thanks to the soldiers' concerted efforts, the situation on the battlefield finally reversed, shifting from a passive defense to an active offense. The entire plain was filled with the zombies' shrill roars.

Finally, when the blood moon retreated, there were only a few zombies left. They either fell to the ground or were washed away by the rain until only their bones were left.

This arduous battle ended with the victory of everyone in the shelter.

The soldiers cheered and embraced each other, celebrating this hard-earned victory. Zhang Shi, Ge Dalong, Wu Qing, and all the soldiers involved knew the thrill of this battle. The sudden appearance of the mutated zombie horde had intensified the zombie tide's intensity. The main gate was riddled with cracks from the explosion. Fortunately, the golden stone was strong, otherwise the shelter could have been breached by the zombies. In a close combat, ordinary soldiers would be no match for the mutated zombies, and the consequences would be disastrous.

Zhang Shi pondered silently in his heart whether it was his expansion that increased the intensity of the zombie tide, or whether it was the improvement in the strength of the four-member team that caused the system to re-evaluate the shelter, leading to tonight's crisis.

The system prompt interrupted his thoughts.

The zombies tonight were of extremely high quality, but most had died from corrosion caused by the rain, and everyone gained less experience than usual. Everyone reached level 17, and Zhang Shi was the leader, reaching level 20 and successfully unlocking a new skill.

[Shadow Swap: A skill with no rank. Can be used when a shadow exists. The main body can swap with the shadow at any time.]

Zhang Shi suppressed his worries and tried out this new skill. He found that this skill has no cooldown time. As long as the shadow exists, it can be released unlimitedly, which can greatly increase the upper limit of operation.

After the zombie tide was settled, everyone was rewarded with a design drawing. When Zhang Shi opened it, the gloom in his heart disappeared.

[Arsenal (Purple) x1: After construction, the soldier's job transfer function is enabled, some technologies are unlocked, and the speed and quality of soldier generation in the barracks are improved.]

Zhang Shi excitedly built it immediately and placed it in the middle of the barracks, letting the barracks guard it.

Sure enough, a lot of information appeared in the system interface. Zhang Shi took a quick look and roughly understood the function of this building.

Simply put, the Arsenal can enhance a soldier's attributes and give them more detailed career breakdowns. For example, Zhang Shi can upgrade the Assault Soldier's class once the level reaches the required level. There are many career options, but Zhang Shi is particularly interested in Artillery and Cavalry. One of these two arms can cooperate with artillery to defend shelters, while the other is highly mobile and can cooperate with Scouts to expand and explore.

In addition, this building also unlocks some military technologies, such as the manufacture and repair of weapons, ammunition, and equipment. As the arsenal develops, the technology tree can also be gradually upgraded.

Most importantly, the existence of the arsenal greatly reduces the speed of recruiting soldiers and improves the quality of soldiers, which is the biggest improvement for the shelter at the current stage.