was comforted by Qin Lan, and Chen Xin didn't say anything more, but he still planned for the worst.

Optimism is needed, but so is preparing for the worst.

In other words, if you are prepared for the worst, then no matter what situation arises, you can face it with optimism and positivity, because the situation cannot be worse again.

And for Chen Xin now, the worst case scenario ......

That is another geological movement, which causes the deep aquifer to lose pressure and affects the shallow aquifer, causing the shallow groundwater to flow into the deep aquifer, and finally there is no groundwater available.

This is a very extreme case, but geologically it is not impossible for the aquifer to be cut off due to geological activity.

Judging from Chen Xin's current situation, if the water source of the aquifer is really cut off, he will face the dilemma of water shortage again.

Although he can grow vegetables in the greenhouse in exchange for drinking water, one of the big problems here is that crop cultivation requires a lot of water consumption.

In addition, the vegetables grown contain a lot of water, which does not enter the recycling system inside the shelter and is recycled.

Therefore, if this really happens, Chen Xin must find a way to obtain a new source of water, and as for moving, it is the final choice in desperation.

Fortunately, there is a fairly thick snow outside, and snowfall still occurs from time to time, so it is a good idea to collect the snow and use it as water after it melts.

However, the snow outside is very dirty, and the collected snow needs to be purified and filtered.

In addition, upgrading the water circulation system, so that the wells brought about by the system upgrade are deeper, the head of the pump is larger, and who can be pumped from the deeper stratum is also a solution to the problem once and for all.

After going through the coping methods he could make in his mind, Chen Xin also became relieved about the worst-case scenario that could occur, at least he had enough means to deal with it.

This made his mood naturally a lot more optimistic, and he smiled at Qin Lan: "Okay, the generator is installed, let's continue to make ground source heat pumps." The equipment that your SWAT team needs has only been made, and there are still five units to be worked on, and I don't know if it can be completed in two days. ”

"Ah Xin, your skills are so good, you will definitely be able to finish it on time, and I will also help." After seeing the "process" of Chen Xin's manufacturing of these mechanical equipment, Qin Lan has full confidence in Chen Xin.

"That's okay, Ah Lan, you can help me take the parts that were cleaned yesterday......" Chen Xin was about to ask Qin Lan to take the parts that were washed yesterday to dry, but the radio in the living room suddenly rang, and the sound of a call came out.

Qin Lan and Chen Xin turned their heads to look at the living room together, and couldn't help but be surprised: "Is someone calling you?" ”

"Well, I'll go see what's going on, Ah Lan, you take out the parts you cleaned yesterday and dry them with water." Chen Xin gave Qin Lan an order and walked towards the living room.

Picking up the shortwave radio talkie, Chen Xin responded to the call, and a conversation made Chen Xin react that it was another group friend who came to him to exchange ground source heat pump equipment.

After talking to Qin Lan, Chen Xin took his gun and walked towards the entrance of the shelter, and Qin Lan hurriedly put down the work in his hand and followed behind Chen Xin.

Putting on protective equipment in the maintenance room, Chen Xin still came to the small bunker through the passage first, and looked out through the observation opening, wanting to see who was coming.

However, the car parked in front of his shelter surprised him a little.

It was an eight-wheeled truck like a heavy-duty truck, with eight huge tires that were one meter high, making the car stand flat even in the thick snow.

However, unlike the truck, it has a sturdy and thick compartment like an armored car, and the windows on the carriage also shine from the inside of the compartment to the outside, faintly illuminating a moire dragon head pattern with red lines on a black background on the body in the darkness.

There is no need to identify it carefully, just these conspicuous features are enough for Chen Xin to recognize that this is a modified RV and understand who its owner is.

"Ah Lan, don't go out yet." After getting out of the small bunker, Chen Xin nodded to Qin Lan before opening the door of the shelter.

Qin Lan watched Chen Xin push open the door of the shelter and walk out, she suddenly became nervous, and the gun on her waist was also grabbed in her hand, ready to rush out at any time.

Chen Xin walked out of the door of the shelter, and saw that the other party had not turned off the headlights, and the light made him a little dazzling.

So he raised the strong flashlight in his hand, shone it directly at the cab of the car in front of him, and directly shook the driver's eyes with the flashlight.

Obviously, the other party was also dazzled by Chen Xinhuang, and quickly turned the headlights into low beams and jumped out of the car.

However, the cab of this car is obviously a bit high, and after the other party jumped, his legs were directly inserted into the snow.

"Brother Xiao Chen, why is the snow so deep at your door!" The person who got out of the car pulled his legs out of the snow, and then walked in front of Chen Xin with one foot deep and one foot shallow.

Looking at the figure who walked in front of him, Chen Xin smiled and said, "How deep is the snow, don't you feel a little bit when you drive from the city?" And how many times have I told you, don't always jump down from the cab, and don't be afraid of breaking your legs? ”

"I'm used to it, besides, who is impatient to climb down with such a high-chassis car!" Although the figure wore a protective mask on his face, the voice of a hippie smiling face suddenly made people hear that he was young.

Chen Xin and this person are naturally familiar with each other, otherwise the other party should call him a writer instead of a title that only acquaintances like Brother Xiao Chen can call.

"Xiaolong, why are you coming to me? Wouldn't it be like switching to a ground source heat pump? Chen Xin wanted to laugh every time he called the person in front of him, Xiaolong, because his surname was Li: "Do you still need these in your family's shelter?" ”

"Why don't you need it?" This person immediately refuted Chen Xin's words, and said to him urgently: "My shelter is equipped with an air conditioner, and it was fine when there was electricity before, but now there is no power supply, and I rely on my own power generation, this air conditioner can't afford it!" ”

Hearing this, Chen Xin could also understand the other party's approach, so he nodded and said, "That's okay, but you also know the rules, did you bring both the materials and the goods exchanged?" ”

"Brother Xiao Chen, don't you know me? When has my Li Yulong been unreliable? Li Yulong suddenly patted his chest, looking full of confidence: "According to what you said, two air conditioners are materials, and I also brought you a cured ham and two boxes of individual rations."

I originally wanted to take the Iberian ham, but my father didn't let me, so I took a Jinhua ham, Brother Chen, don't dislike it. ”