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Lin Chuan thinks that he can find the people who dig the tunnels by walking around the sewers, and this judgment comes from his growing knowledge of underground pipes.

In the past, he didn't know much about these underground pipes in the city, thinking that they were all the same cement pipes, but after they started walking around the city, they often had to use these pipes to avoid the area occupied by monsters, and gradually became aware of these pipes.

The widest ones are the main drains, which tend to be the lowest, and some of them are even directly the original dark rivers. The biggest problem with drains is that most of them are waterlogged, and the air is filled with harmful gases such as methane, which makes them very dangerous for those who enter them.

Then there are the cable tunnels, some of which are very wide enough for two people to stand upright and parallel, while others are only large enough for one person to bend over and walk in, but in general, cable tunnels are also good shelters and passages. But cable tunnels also have the problem of stagnant water, and they are often interrupted and turned into rows of guò plastic pipes running underground, making it almost impossible to use cable tunnels to travel through the city.

Then there are the pipes of telecommunications and cable TV, which are generally relatively small, just enough for a person to walk in a half-squat. But generally speaking, such pipes are relatively dry, and the disadvantage is that they are usually buried shallowly, and they are not coherent, and often become a row pipe.

The most common are the sewers, which are found almost all over the city and are connected to each other by a myriad of intricate passages, like a labyrinth. The problem with sewers is also stagnant water, although because no one uses them to drain domestic sewage, a lot of rainwater still flows from here, and after losing the maintenance of the city's drainage department, many sections are muddy or even completely flooded by sewage. The sewers are very close to the ground, so the security is low, but fortunately, there are many places with exits, so you can easily enter and exit.

For Lin Chuan, the most used pipe is the sewer, when the animal has not completely mutated, such a pipe is very dangerous, and many rodents thrive in these pipes. But after more than a month, Jiang Hai could no longer see any unmutated mammals, and those mutant rats had already become monsters more than two meters long, and these pipes were now too narrow for them.

These pipelines have become the most important passages for people to survive in the city, and one of the most important tasks assigned by Lin Chuan to the reconnaissance team is to mark all the underground pipelines that can be used near the base, and inform everyone who needs to go out about their situation.

They climbed into the area after taking a rough look at the direction of the sewers, a section that had not yet been reconnoitred in detail, and most of the group's focus was still on the area around the base.

Lin Chuan and Tank both wore long rubber water boots, which was one of the necessary equipment for the reconnaissance team, which could effectively prevent the team members from being infected by the virus because of soaking in sewage for a long time, but at present, they only found two sets, which is one of the reasons why only the two of them went to an unfamiliar area to conduct reconnaissance.

"That's not right." The tank whispered to Lin Chuan. They had been walking underground for more than an hour, and had already walked through the sewers near the warehouse, but there were no new holes, and the tanks had ventured several times to push open the manhole covers overhead to see where they were, but there were no suspicious passages.

"Maybe they came out of those houses." Lin Chuan guessed. Then they were likely to come from a deeper place, which made Lin Chuan's respect for them even stronger.

During that failed tunnel excavation operation, Lin Chuan deeply realized the difficulty of digging a tunnel underground, which was only a fifteen-meter-long tunnel, and they not only completely lost their sense of direction, but also knew nothing about the surrounding situation.

Being able to dig a tunnel from a distance of more than 200 meters, and having the exit just under the stack of rice and not in the middle of the monsters, requires a very high positioning technique for the digger.

Lin Chuan's desire to see them became even stronger.

But they had no more time left, so they had to follow the same path and return to the wellhead where they had entered.

"Be sure to find them." Lin Chuan said to the tank. He had a feeling that finding these people would increase their odds of survival many, many times over.

The sun had already begun to set, and the tank was leading the way through the streets and alleys quickly, and Lin Chuan had been thinking about the mysterious tunnel diggers in his mind, and he didn't notice that the tank suddenly stopped on the side of the road.

"What's wrong?" He asked.

"A new footprint." Tank replied worriedly. "I'm the next Ao!" He scolded subconsciously. "It won't be this morning at the latest."

It's very close to the open space where the base is located, and you only need to cross two more streets to see the NSA house.

Lin Chuan lowered his head and saw that it was a semicircular paw print that was two meters wide, and it stepped on a huge gap in the green belt on the side of the road.

"What could it be?" Lin Chuan was also worried, no monsters had approached their gate in the past few nights, but that didn't mean they were safe. Lin Chuan's mind flashed through the giant bull he had seen, in front of its horns, could the gate that claimed to weigh fifteen tons really protect them?

"It's supposed to be a giant dog." Tank replied. "It shouldn't be able to open our door, but I still wish it was just passing by."

The two continued to walk forward, and soon saw the material group moving things to the base.

"How's it going today?" Lin Chuan asked.

"I found a lot to eat, and I shouldn't worry about food this month." Lu Guangping replied.

"What about casualties?" Lin Chuan continued to ask.

"Only two people were injured, and it wasn't strict." Zeng Yu replied happily. "Brother Lin, will you have a big meal tonight?" He asked.

Lin Chuan shook his head. "Eat and drink, at least until we take down the warehouse."

Zeng Yu lowered his head, and many people also felt a little dissatisfied, but they did not directly express their opposition.

Lin Chuan was a little helpless.

They have indeed gained a lot in the past few days, and nearly a quarter of the space in the base has been occupied, but this does not mean that they can always guarantee such a harvest. To put it bluntly, the harvest of the past few days was not found by themselves, but by people like Li Weilin and Zhou Tao who have been active in this area for a long time, and they just didn't take possession of them for their own reasons.

It is foreseeable that after clearing all the locations that Zhou Tao knows, they are likely to face the dilemma of not being able to find a source of food for a long time.

In a month at most, there will be a rainy winter, when going out to find food will be extremely dangerous again, and they will not find enough to use this winter.

"Let's have a meeting after dinner." After he got into the base, he said to all the commissioners.

"We should stop looking for food and focus on finding the materials we need to make our equipment." Lin Chuan said.

This kind of construction made the committee members stunned for a moment.

"Why?" Lu Guangping asked. "This food is not enough for us to survive the winter!"

"That's why we have to focus on collecting materials." Lin Chuan replied.

He estimates that there will be enough food until the end of the month, which is when he expects the rainy season to return.

Almost all the places that Zhou Tao knew near the base where he could find food had already been cleaned up, and in Lin Chuan's opinion, the rest of the places were either too far away or too many monsters, and the time, manpower, and risks invested were very much worth the loss. If they continue to spend time collecting these scattered foods, because they are out of their reconnaissance range, the combat team and the material team will have to invest more manpower and time on the road.

However, they may not be able to gather enough food for everyone to survive the winter before the rainy season, which means that such an operation may seem to be rewarding every day, but it has no practical meaning for the survival of the base.

Lin Chuan thought that the only way for them to survive was to attack the warehouse area, even if they could only occupy one warehouse, the harvest in there would be enough for them to eat.

In order to achieve this goal, they must create a weapon that can destroy the monsters entrenched in the warehouse, and contact Li Weilin's team to join in the operation.

"At the current pace, when will we be able to build a giant crossbow? When will you be able to create a trap? He asked Wang Qinian.

"At least a month." Wang Qinian replied embarrassedly. "We can only figure it out a little bit, and it will take time."

"But what we're missing is time." Lin Chuan said. "So we have to put in more manpower."

He also expressed another concern.

There aren't many large monsters in the area around the base, and it can even be said that there aren't a few, but as their range of activity continues to expand, will it attract monsters in a larger area?

He told them about the footprints he had seen with the tank when he returned, and their faces darkened.

The weather was sunny for four days in a row, which made most people selectively forget about the horror of monsters, but danger would return at any time.

Lin Chuan sensed that everyone was resentful, and maybe they would think he was too pessimistic, but as the leader of the team, he couldn't just say good things, but also pointed out the dangers.

"We have to open that gate tomorrow so that even if the gate breaks, we have a buffer." He continued. "Is there a technical problem?"

"It's not true, it's just that the welding and cutting machines have been idle, and to break down that door, we have to stop what we do for at least a whole day." Wang Qinian replied.

"That's worth it, too." Lin Chuan said. "Find food for another day tomorrow, and then focus all your energy on equipment, do you have a problem?"

"What if we end up with no way to build a weapon that can kill a large monster?" Li Mingfeng asked. "There is not enough food, and there is no hope of taking the warehouse, have you ever thought about such an outcome?"

"We can't let that happen, to survive, we have to get what is in the warehouse." Lin Chuan replied. "There's no other way."

If he could find the people who dug out the tunnel, maybe the action would be relatively simpler, but Lin Chuan was ready to find them and tell everyone later, lest they slack off again.

The atmosphere was silent again, and the relaxed atmosphere of dinner was completely lost.

"Let's vote." Jiang Ming said.

"There's a monster coming!" The guard at the door shouted suddenly, and at the same time staggered away from the door.

With this scream, the gate made a loud bang under the violent impact.

"Battle Group Assemble!" Li Mingfeng shouted loudly and stood up from the fire.

The battle group stood at the front with spears, while the others stood behind them in despair.

The floodgates kept making loud noises, and many people closed their eyes for fear of hearing it being torn apart.

"Is the Molotov cocktail ready?" Lin Chuan said loudly to Wang Qinian.

"Not ...... yet," Wang Qinian replied with a pale face.

"Where's the oil? Is there gasoline in the base? ”

"Yes!" Soon someone came over with some gasoline.

Lin Chuan endured his fear and walked to the door, pouring gasoline on the outside of the cave entrance with all his might, a huge fangs hit the gap and got stuck, and the monster began to struggle, Lin Chuan shook his head for a moment, grabbed the gasoline drum and poured it into the huge mouth.

"Bring a fire!" He shouted.

Li Mingfeng grabbed a burning firewood from the fire and threw it on top of the fang, and the fire immediately ignited.

Lin Chuan took a few steps back, watching the monster struggle frantically, the terrible roar almost deafened their ears, and the gate was like a sail in a storm, as if it would be shattered at any moment.

Suddenly, it retreated through the gap with a thud, and the flames disappeared instantly.

The temperature at the gate was high, but the tank still ventured out to see the situation.

"That crumbs ran away." He soon came back to tell everyone what they saw. "But through the light of the fire on it, I saw a lot of monsters, and it was not the only one who was attracted to it."

"We've got to start cutting that door right away." Li Mingfeng said.

"What about my other buildings?" Lin Chuan asked.

The committee members looked at each other and finally nodded silently.