"The temperature will probably be even lower in the early morning." Lu Wuyai thought for a while and turned the heating up to the maximum, which just neutralized the cold air coming out of the vents.

There was no way to block the ventilation openings, so they had to ensure air circulation inside the cave.

Soon, Lu Wuyai crawled into the quilt, feeling the warmth of the surrounding air, and quickly fell into a deep sleep again.

When Lu Wuyai woke up the next day, he saw a wisp of ice crystal hanging on the ventilation vent he had opened the night before, which looked beautiful in the dim light of the cave.

But in Lu Wuyai's view, the temperature inside the cave was significantly colder than the night before.

After putting on his clothes, Lu Wuyai did not break the ice crystals on the vents, because they looked pretty.

He glanced at the thermometer hanging in the hole. The red mercury column showed only ten degrees Celsius.

"It was 15 degrees Celsius when I went to sleep last night." Lu Wuyai clicked his tongue and then walked to the curtain. As soon as he opened it, a gust of cold wind blew to his feet, making him a little uncomfortable, and he even got goosebumps on his neck.

When we reached the cave entrance, the temperature on the thermometer was still -20 degrees Celsius.

Lu Wuyai took out a frostbite cap from the container, put it on, and then walked out of the cave with peace of mind.

The moment he peeked out, Lu Wuyai suddenly felt as if he had been punched, and his exposed cheek throbbed with pain.

"It's so cold!" Lu Wuyai was startled. He took out his skis from behind and rushed towards the cowshed. He was worried that the cold snap last night would cause fatal damage to the cows and goats.

When he arrived at the cowshed, the cold front had already frozen the door solid.

After hacking at it a few times at the doorway, Lu Wuyai finally chopped it down. He breathed a sigh of relief when he saw the animals calling out inside the house.

Although there was a heater in the cowshed, it wasn't very warm. However, compared to the outside world, it was still springtime here.

Lu Wuyai turned the heater to its highest setting, checked the diesel fuel consumption, and added some hay and marching rations to the cowshed. Then he closed the door, took off on his skis, and headed towards the rocky hill.

Ten minutes later, Lu Wuyai returned to the cave. Looking at the quiet, dimly lit space, sleepiness washed over him again.

......

For several days in a row, Lu Wuyai and the others lived in the cave.

Occasionally, they would go for a walk, the furthest they would go was to a puddle.

Speaking of the pool, the tap water has completely frozen due to the cold weather, but fortunately, a large amount of fresh water was stored in the cave in advance, enough for the whole winter.

In mid-February, the temperature did not rise further and remained at -20 degrees Celsius.

Early that morning, before it snowed, Lu Wuyai took the woman to the bamboo forest. On the way, he once again felt the malice of winter.

"I'd rather die than come out." Su Xi's eyes were red, and her nose was almost frozen. If she had known it would be this cold, she would rather die than come out.

Although the sun is shining brightly, it cannot melt the frozen snow. On the contrary, the snow absorbs heat, making the air even colder.

Lu Wuyai, who was leading the way, had hands that were frozen stiff, but the bamboo forest was right in front of them, and they arrived quickly.

"I don't know if the pheasant has turned into a frozen chicken." Lu Wuyai chopped the bamboo outside, and the frozen bamboo joints were indeed stronger than he had imagined.

Fortunately, these pheasants were not kept in captivity deep in the bamboo forest.

Coo coo coo.

Hearing the pheasant's cries, Lu Wuyai couldn't help but marvel at how it had managed to survive such a cold snap.

“However, there may not be many pheasants that survived,” Lu Wuyai thought to himself.

But when they entered the chicken coop, dozens of pheasants flew around.

Lu Wuyai clicked his tongue inwardly, wondering how there could be so many pheasants in the bamboo forest.

There are indeed many pheasants in the bamboo forest.

"Is it really that warm in the bamboo forest?" Su Xi and the others were also confused. The number of pheasants in the bamboo forest seemed to be increasing rather than decreasing. Many small pheasants were running around in the forest.

But in fact, Lu Wuyai did not feel any particular warmth in the bamboo forest.

"There must be something strange in this chicken coop," Lu Wuyai thought to himself.

Back then, to give the pheasants enough space, everyone built a very large chicken coop. Now it seems there might be some secret there.

“Let’s go see it together,” Lu Wuyai said.

But Su Xi shook her head. It was too cold outside; she didn't want to stay a moment longer.

"Let's go." Jin Xilu gave Su Xi a push. Although she also felt cold, it was a rare treat to be out here, and there was no wind in the bamboo forest, unlike the biting cold outside.

Su Xi pouted and could only follow behind everyone else.

The chicken coop is very large, and some areas are overgrown with bamboo, which seriously obstructs everyone's view.

Ten minutes later, Lu Wuyai and the others heard a gasp. When they turned around, they found that Jin Xilu and Su Xi were gone.

"What happened?" Lu Wuyai shouted, and the other women exchanged bewildered glances. Su Xi and Jin Xilu were at the back, and no one had seen how they disappeared.

Soon, the team members walked back and found a hole in the ground. It was dark, and there were footprints nearby.

Lu Wuyai bent down and shouted into the pit, and soon heard Jin Xilu's response, as if he had discovered something extraordinary.

"Be careful," Su Xi said to Lu Wuyai.

Lu Wuyai nodded: "I'll go down first. You can come down when it's safe."

For safety's sake, Lu Wuyai decided to go and check it out alone, leaving the other women outside.

The pit sloped downwards. After a while, Lu Wuyai realized it was very deep. He slid for more than ten seconds, but still hadn't reached the end.

A minute later, Lu Wuyai suddenly saw a protruding rock. When he stepped on it, his falling body immediately stopped, and he could still hear Jin Xilu and Su Xi's voices beside him.

"Lu Wuyai".

"Lu Wuyai, come and take a look."

Lu Wuyai stood up and looked around blankly. He suddenly realized that this place was actually a cave. The space inside was enormous. Most surprisingly, he felt the environment was warm and the air was circulating. It was clearly a cave. A prime location.

Seeing some chicken droppings on the ground, Lu Wuyai realized that these pheasants had likely spent the winter here, and not only had they not died, they had also reproduced.

“Be careful.” Lu Wuyai said the same thing to the two women.

Although it is inferred that pheasants live here, it is still an unfamiliar environment, and there may be other dangers.

The cave was very dark and the terrain was complex. Even though they were able to see at night, they still had to be careful and could not be careless.

"Take out the gun," Lu Wuyai warned again and again.

Soon, Su Xi and Jin Xilu both drew their pistols and followed Lu Wuyai closely.

It has to be said that the scenery and terrain inside this cave are really strange; it has everything.

Some formations resemble small hills, stretching endlessly. Others are like stone bridges, lying across dark cracks. Walking among them, one feels as if they might be swallowed by darkness at any moment. Still others are like fan-shaped formations, sloping and open, seemingly on the verge of collapse.

Lu Wuyai and the other two walked around the area and found that there was no particular danger, so they called down the women guarding the cave entrance.

"It turned out to be a cave."

Everyone was astonished by what they saw. However, considering that Gu Yuxin and the others couldn't see at night, Su Xi took out a few glow sticks from her backpack, snapped them, and threw them in all directions.

The vibrant fluorescent colors directly illuminated the cave, making it appear even more magnificent.

“This underground cave is huge, don’t lose it,” Lu Wuyai said to Song Xiaoyou. “Make sure to mark the route.”

Song Xiaoyou nodded, took out a machete, and made scratches on some stone pillars along the way to prevent getting lost.

"I never imagined there would be such a space under this bamboo forest." Everyone sighed as they explored the area.

The cave is truly enormous. When you gaze at it, you can't see its end. The paths are also quite complex. If you're not careful, you can bump into intersecting stone pillars.

"There's a stream here," Lu Wuyai said in surprise. In front of him, there really was a clear stream, flowing slowly along a waterbed, with some small fish and shrimp faintly visible.

Gu Yuxin took a test tube out of her backpack. After placing it in the water, she didn't feel any chill. This was unusual.

“There might be a hot spring at the end of this stream,” Gu Yuxin said in surprise.

The stream water wasn't cold, but it had a subtle warmth to it.

Unfortunately, the path leading to the stream was difficult to traverse. The cave was filled with stalactites and stalagmites. Everyone had to turn back and eventually leave the cave.

When they came out, they returned to the bamboo forest. Lu Wuyai and the others collected the wild eggs scattered nearby.

"It's strange, why are these pheasants laying their eggs in such a warm place?" Su Xi complained. Because it was too cold, her hand went numb after reaching out to pick up the eggs for a while.

Fortunately, after a few minutes, everyone left the bamboo forest and caught two pheasants to improve their diet.

That night, everyone ate stir-fried spicy chicken, and felt warm all over. They completely forgot how awkward it had been when it was cold during the day.

However, in the middle of the night, the diesel generator malfunctioned, and the deep chill woke everyone. Lu Wuyai quickly went into the cave to get a new generator. After starting it, the environment in the cave gradually warmed up.

Click it.

As soon as Lu Wuyai lay down, a strange sound suddenly reached his ears. He looked up, wondering if he had misheard.

Click it.

This time, Lu Wuyai was sure he hadn't misheard, so he got out of bed, walked to the ventilation hole, inserted the periscope, and then slowly extended it out of the hole, looking at the dark world on the stone mountain.

However, Lu Wuyai didn't find anything unusual. How could there be any living things in this kind of weather?

Just as Lu Wuyai shook his head and took off the periscope, he heard that strange sound again.

Lu Wuyai frowned. He glanced at the cave entrance, then turned around, put on his clothes and shoes, grabbed a pistol, walked around the nearby underground space, and finally stopped in front of the orchard.

This orchard used to be a medicinal herb garden. After it collapsed, it was temporarily converted into a fruit tree planting area. There used to be an iron gate in the passageway, which required a card to enter.

Lu Wuyai casually swiped his card. As the iron gate slowly opened, a foul stench, accompanied by a gust of cold wind, rushed in.

Lu Wuyai instinctively covered his mouth and nose, but then realized something was wrong. Just as he was about to draw his gun and fire, a corpse rushed out of the passage and knocked him to the ground.

His body fell heavily to the ground. Lu Wuyai used his hands to block his opponent's body, but heard a series of low roars and subconsciously raised his head.

In the darkness, several pairs of scarlet eyes looked like demons crawling out of hell, sending chills down one's spine and making one's scalp tingle.

Lu Wuyai swallowed hard, then suddenly raised his leg and kicked the patient, whose eyes were red, sending him flying.

The moment he stood up, Lu Wuyai suddenly realized that he saw a large hole in the roof of the shed above the orchard.

These people with conjunctivitis may have come down from above.

Almost simultaneously, Lu Wuyai retreated rapidly, leaving the passage at an extremely fast speed.

Unfortunately, the other party was also very fast. Lu Wuyai didn't have time to close the door. So, the moment he raised his gun to fire, the booming gunshots woke up the sleeping woman in the cave.

"Something's happened." Su Xi was the first to wake up. The gunshot gave her no time to think. The first thing she did was stand up and look for her gun.

Fortunately, since the last time Black Panther was driven away, everyone has kept their guns close at hand.

In less than a minute, no one was sleeping in the cave anymore. They simply put on their clothes and, braving the cold, slowly made their way into the cave through the passageway.

Judging from the gunshot just now, the direction was from that location.

Upon reaching this point, Lu Wuyai continued taking photos. Fortunately, the passage was narrow, allowing him to barely pass two people. However, the other party's shouts were so intense that they gave him a terrifying feeling.

"I must have come here by smelling chicken blood," Lu Wuyai thought to himself.

Today I caught two pheasants in the bamboo forest, and Lu Wuyai sprinkled their blood in a corner of the fruit orchard. This is probably one of the reasons that attracted this group of people with conjunctivitis.

According to some details recalled by Li Ruisi, humans infected with the virus are very sensitive to the smell of blood, but what Lu Wuyai did not expect was that the other party actually smashed the ice and snow outside.

The gunfight lasted for several minutes. After the dust settled, the corridor was filled with the strong stench of blood.

Apart from Lu Wuyai, the other women all looked unwell, especially Li Ruisi, whose face turned completely pale and whose breathing became heavy.

Inside the cave, much of the cement was broken, and some generators were even penetrated. They appeared to be unusable.

The losses this time are considerable; the most important thing now is to dispose of these bodies as quickly as possible.

Lu Wuyai took a few rescue bags, and the women helped him stuff the body into the bags. Then they loaded it onto a small truck and sped off towards the snowfield hundreds of miles away.

The woman inside the cave began cleaning up the battlefield, carefully removing the bloodstains and filling the breached cement with glue to prevent mud and sand from leaking out.

The final step is disinfection.

Gu Yuxin used existing chemicals to manufacture a batch of disinfectant, which is now coming in handy.

Two hours later, Lu Wuyai returned from outside. His hat was frozen solid.

"It's so cold." Lu Wuyai felt like he was freezing to death, and he couldn't feel anything at all.

After relaxing for a long time, he slowly recovered and looked at the entrance to the cave with fear in his eyes.

The low temperatures outside are a disaster for humans.

However, judging from today's attack, the low temperature clearly did not restrict the infected people's movements; they remained as agile as ever.

After this incident, everyone else was wide awake. Lu Wuyai took a folding ladder, climbed onto the roof of the orchard, and filled the hole again with steel bars.

As for the fruit trees, they are fine; they have already been sprayed with disinfectant. They just need to be thoroughly washed before eating.

“Slaughterhouses in the future will have to be located outdoors, and bloodstains will have to be dealt with,” Lu Wuyai said earnestly.

This was no small matter. Fortunately, there was a gate in the fruit orchard that led through the cave; otherwise, something even worse might have happened once they entered the cave.

Over the next few days, Lu Wuyai began adding iron gates to each passageway. Although there were no card readers at the time, they still served as barriers, though entering and exiting was more inconvenient.

Moreover, Lu Wuyai had set up hidden compartments in many places, containing bombs, pistols, and bullets, just in case.

In his spare time, Lu Wuyai made several targets in the orchard for everyone to practice their marksmanship.

The targets are connected to the engine by chains, so they are all moving targets. This kind of filming is of great significance to women.

Of course, bullets are consumed quickly, but I had already collected a lot of bullets, so there won't be any problem in the short term.

In addition, they sometimes practice archery, since bullets can't be produced on a deserted island. One day, these once-powerful weapons will become piles of scrap metal.

Lu Wuyai also spends four hours every day specifically improving his archery skills. He still can't easily draw his longbow to its full extent.

There were many crossbows in the cave. These crossbows were all mechanical. They were so powerful that they were even more dangerous than bullets.

Days passed, but the cold wave never disappeared.

On the deserted island, the snow had turned into ground. No matter how heavy a person walked on it, it wouldn't collapse. It was terrifying.

Lu Wuyai even doubted whether significant changes had occurred in the global climate.

During this time, when night fell, they would also call their cell phones to try to contact the outside world and get some definite information.

Unfortunately, it has never been opened.

However, Lu Wuyai and the others weren't too worried about any of this. They had food, fruit, and fresh water. Even if the pool froze over, they could still get water.

However, this winter lasted a little longer than expected, and the cows' feed became a bit tight.

Lu Wuyai and his companions reached the cave in the bamboo forest again, cutting down the stalagmites and stone pillars along the stream. They discovered that at the end of the cave was indeed a hot spring. This greatly excited the women. They bathed several times, which thrilled Lu Wuyai. They prepared for their mission.

On the last night of February, Lu Wuyai and the others suddenly heard a loud cracking sound. When they realized what was happening, the periscope inserted into the ventilation duct had fallen down. It was covered in hard ice crystals, and the top had even shattered completely into fragments. Several pieces.

A gust of cold wind blew in from the vent, giving me goosebumps.