Zhang Shi remembered the zombies that had emerged from the ground in the plains, so he led his men to dig nearby, but they found nothing. The ground itself was solid, as if it had been systematically restored, erasing all traces of the zombies' presence.

Seeing that he couldn't find the corpse nest anytime soon, Zhang Shi had no choice but to give up for the time being. Fortunately, the area within a kilometer radius of the shelter had already been cleared. Zhang Shi decided to expand the shelter's area again, and once the number of soldiers had increased to a certain scale, he would try to expand outwards.

Inside the shelter, the cultivation of golden rice went very smoothly. Wu Qing led the way in teaching the soldiers how to farm, so they could farm in their spare time and serve as soldiers in times of war. With no problem with resource supply, Zhang Shi had the capital to continue garrisoning troops.

After glancing at the boundary of the shelter, Zhang Shi had an idea. He increased the length and width of the wall by 50 meters each. In order to deal with the zombies' swarm tactics, Zhang Shi also increased the height of the wall by 1 meter, which completely drained his gold essence stone reserves.

Afterwards, Zhang Shi posted a message on the trading market to buy various basic resources, and his private chat interface was quickly bombarded by enthusiastic survivors. Zhang Shi selected some reasonably priced items and made purchases, then glanced at the chat channel and closed the system.

Zhang Shi noticed that the number of players in the regional chat channel had fallen below 3,000. In less than a month since he arrived, the number of survivors had decreased by more than 70%, and countless others had been injured.

Zhang Shi realized that the Wilderness World was setting up disasters with the intention of killing the survivors, and the situation of ordinary survivors was extremely difficult.

"Stone, something's up!"

Zhao Feng's loud voice echoed from the fortress, and he ran quickly toward Zhang Shi, holding the Book of Revelation in his hand.

Wu Qing and Ge Dalong were also drawn by his loud voice. Seeing the Book of Revelation in his hand, they knew that there was indeed something important, and waited with serious expressions for what he would say next.

Zhao Feng took a deep breath and opened the Book of Revelation.

"[Revelation (Green) x1: Able to foretell impending disaster. The next natural calamity: torrential rain. In the midst of uncertainty, everything is preordained.]"

Zhang Shi calculated that today was exactly the tenth day since the extreme heat disaster began. Although the temperature had dropped to normal levels, the zombie crisis still made it difficult for the survivors to live in peace. He didn't expect that after only two good days, the system would start causing trouble again and create a new disaster.

Ge Dalong reached out to feel the humidity in the air, looked up at the sky, but didn't find anything unusual.

"It looks like there's still some time before the next natural disaster, so we need to take advantage of this buffer period to do some preparations in advance."

Zhang Shi knew that a rainstorm that could be called a natural disaster was definitely not a minor incident. Once the rain actually started, it was likely to last for quite some time, and flooding was inevitable. If they weren't careful, the entire shelter could be submerged.

Fortunately, the shelter was chosen near a plain when it was initially selected. The surrounding terrain was not complicated, so there would be no disasters such as mudslides and landslides. The only thing to be careful about is the two small rivers in front of and behind the shelter, which will inevitably burst their banks soon after heavy rain.

"How about we try digging a moat, connecting the inside of the shelter to the moat through pipes, and then connecting the moat to the two small rivers outside, so that the accumulated water can be drained out in time."

Wu Qing thought of the drainage methods used in ancient cities and proposed this solution.

Zhang Shi had no solution to the torrential rain disaster. Relocating the shelter again was clearly unrealistic for him, so the only way to deal with the rainstorm was to start with flood control and drainage.

After considering for a moment, Zhang Shi agreed to Wu Qing's suggestion and prepared to start digging outwards from the deep pit used to defend against zombies, beginning the next day.

Zhao Feng suddenly seized on a blind spot and asked excitedly.

"Hey, aren't these zombies particularly afraid of water? Do you think they'll be wiped out once the torrential rains start? Then we won't have to fight off the zombie hordes every night anymore?"

The group hadn't really thought of this question, but after careful analysis, they realized that Zhao Feng's guess was indeed reasonable.

"We'll deal with whatever comes our way, no matter what. We just need to do our job. The Blood Moon is coming, so let's get ready. The Apocalypse has changed, and I have a feeling that today's zombie horde might bring a 'surprise'."

...

Ge Dalong's guess was correct. As soon as the Blood Moon began, a team of Titan zombies emerged from the ground, followed by countless mutated zombies.

This zombie attack seemed to have a set plan. The various types of mutated zombies were divided into different formations. First, Titan and the tall guy charged into the formation, destroying the barricades and covering the spiders and monkeys as they closed the distance to the wall.

Although the lasers and artillery fire inflicted heavy casualties on them, a small number of zombies still managed to get close and began frantically spitting spider silk at the soldiers on the wall.

The soldiers had witnessed the power of spider silk, and under Zhang Shi's orders, they all found cover to take refuge.

As soon as the soldiers stopped firing, the zombie army quickly moved towards the wall. Seeing this, Wu Qing hurriedly manipulated the giant vines to block them, but unexpectedly, more than a dozen fat men suddenly rushed out from the zombie horde.

These obese men were all enormous, standing two meters tall with waists measuring one and a half meters. Their bodies swayed like water buckets as they staggered towards the shelter, yet they weren't slow. Each of them had a massive fleshy growth on its chest, signifying its status as a mutated zombie. The growths flashed a blinding red light at an extremely high frequency, and their bodies trembled slightly with each flash, making them look like highly unstable human bombs.

The giant vines swept across, attempting to use their immense strength to tear the fat bucket zombies into pieces. But as soon as they got close, the bucket at the front roared and then exploded like a bomb. The powerful impact, along with a shower of stinking corpses and blood, shattered the vines.

The wall was covered with acid sprayed from the exploding water bucket zombie, making a hissing sound and emitting puffs of white smoke. It was obvious without even looking that the acid was also extremely corrosive.

Standing at the top, Zhang Shi stumbled, nearly knocked over by the powerful shockwave. The impact of the exploding zombie far exceeded that of explosives, and he was somewhat worried about whether the gold-refined stone wall could withstand the blast.

Not far away, more water-bucket zombies were still rushing towards the wall, their target the shelter. Zhang Shi shouted anxiously to the back.

"Quickly, focus fire! Focus fire! Shoot at their weak points, don't let them get close to the wall."

After saying that, Zhang Shi took the lead and aimed at a self-destructing zombie, hitting its weak point with an arrow.

This arrow acted as if it had lit the fuse of the exploding zombie, instantly blasting it apart. The explosion generated a massive shockwave that overturned all the nearby zombies, and ordinary zombies that were closer were completely obliterated by the blast, reduced to a pile of severed limbs.