Based on Chen Yu's experience, hydropower, solar power, and wind power are all impractical in an extremely cold apocalypse.

Only thermal power and nuclear power can provide a stable source of electricity.

However, thermal power relies too heavily on energy sources such as coal and oil, which are extremely difficult to obtain and mine in the post-apocalyptic world.

Nuclear power is subject to strict domestic regulations, which Chen Yu could not possibly access.

Hearing Xie Zhenguo mention geothermal energy at this moment opened up a new idea for Chen Yu.

Geothermal energy is natural heat energy extracted from the Earth's crust. This energy comes from the magma inside the Earth and exists in the form of heat.

The Earth's internal temperature reaches 7000℃. In the impending extreme cold apocalypse, the sun's temperature will drop, but the Earth's interior will remain largely unaffected.

Due to the extremely high temperatures inside the Earth, even at depths of 130 to 160 kilometers from the surface, temperatures can reach 650 to 1200°C.

This heat energy is transferred to the Earth's crust 1 to 5 kilometers below the surface through the flow of groundwater and lava flows, and the heat can be transferred to places closer to the ground.

The high temperature of the lava heats the nearby groundwater, and this heated water eventually seeps to the surface, forming the hot springs that people are familiar with.

Geothermal energy is a highly competitive clean and renewable energy source with advantages such as large reserves, wide distribution, green and low-carbon characteristics, strong applicability, and good stability.

This is simply the best energy source in an extremely cold, apocalyptic world!

Prior to this, Chen Yu had considered geothermal power generation.

However, geothermal power generation is not widespread in Daxia.

Considering the construction requirements of a doomsday bunker, finding a suitable location becomes even more challenging.

But if there are no conditions, we can create them!

With such abundant geothermal resources in Daxia, how could we possibly lack a suitable location to build a doomsday bunker?

Then we can invest in and build a geothermal power plant ourselves.

In addition to generating electricity, geothermal energy can also be used to heat one's own doomsday bunker.

Most importantly, Anping District, where he lives, has abundant geothermal resources, making it a perfect combination of favorable timing and location!

Thinking of this, Chen Yu couldn't help but feel excited and said to Xie Zhenguo:

"Brother, your suggestion is excellent. Do you know any technical experts in geothermal energy? I'm interested in investing in a geothermal power plant and would like to consult with an expert."

Seeing that Chen Yu agreed with his suggestion, Xie Zhenguo burst into laughter:

"Haha, what a coincidence! I happen to know an expert in this field, and he works at our power plant!"

Chen Yu asked, "Can you arrange for him to come out?"

Upon hearing this, Xie Zhenguo immediately patted his chest and assured him:

"Don't worry, young man. Although I, Xie Zhenguo, am just a security guard, I have been working at Jianglin Power Plant for over twenty years. I have excellent interpersonal relationships!"

"Then I'll have to trouble you, brother!" Chen Yu said with a smile, raising his glass and drinking it all in one gulp.

After the two had eaten and drunk their fill, Chen Yu paid the bill and then helped Xie Zhenguo out of the restaurant.

Seeing Xie Zhenguo's completely drunk state, it seemed inappropriate to ask him to make an appointment for him that afternoon.

So Chen Yu had no choice but to take him home. After exchanging contact information, Chen Yu said goodbye for the time being.

Since he had drunk quite a bit, he was unable to conduct any further investigations in the afternoon, so he checked into a nearby hotel and fell asleep immediately.

When Chen Yu woke up again, it was already 7 p.m.

Chen Yu quickly picked up his phone and dialed Xie Zhenguo's number. It took a long time for the call to be answered.

Hello! Who is this?

The voice coming from the other end was Xie Zhenguo's; judging from his languid tone, he was clearly still hungover.

"It's me, Brother Xie, I'm Chen Yu. We had lunch together," Chen Yu said.

Xie Zhenguo was stunned for a moment upon hearing this, and it took him a while to react: "Uh... Xiao Chen! Is something the matter?"

"Hehe, brother, have you forgotten? The thing I asked you for help at noon." Chen Yu smiled wryly.

"Huh~?"

It was obvious that Xie Zhenguo had completely forgotten what happened at noon.

Helpless, Chen Yu could only remind him, "Could you make an appointment with a geothermal expert for me? I need to consult him about something."

"Hey! Look at my memory, drinking has ruined everything!" Xie Zhenguo patted his head. "Don't worry, young man, I'll take care of it for you tomorrow."

Chen Yu hesitated for a moment after hearing this, then said, "Brother, could you ask for me now? I'm in a bit of a hurry."

“Young man, it’s not that I don’t want to help you, the problem is I don’t have his contact information! How about this, tomorrow when I go to work, I’ll wait for him at the factory gate, and I’ll definitely bring him to you by noon at the latest,” Xie Zhenguo assured him.

Upon hearing this, Chen Yu smiled wryly and could only nod, saying, "Alright, then I'll trouble you, brother." After exchanging a few more polite words, he hung up the phone.

It's the weekend, so it's not really a good time to make plans. Let's wait until tomorrow.

To be on the safe side, he needs to go to the Jianglin Power Plant in person tomorrow.

After making his decision, Chen Yu left the hotel, intending to go out for something to eat; he didn't plan to go back that night.

Although Jiang Lin and Anping are not far apart, he would be renting a place anyway, so there's no need for him to go back.

Chen Yu found a restaurant that looked quite clean and casually ordered a few specialty dishes.

Then I sat quietly in the corner, my thoughts drifting to tomorrow.

Although Xie Zhenguo agreed to help arrange a meeting with a geothermal expert, it seemed from Xie Zhenguo's tone that he wasn't that familiar with that "expert."

Feeling uneasy, he decided to personally visit the Jianglin Power Plant to ensure things would proceed smoothly.

After all, the geothermal project is related to his doomsday base, and there is no room for carelessness.

If he had an expert in this field to guide him, he could achieve twice the results with half the effort.

Soon, several plates of steaming hot food were served on Chen Yu's table.

After his rebirth, Chen Yu ate a little more for his first meal, but otherwise ate quite simply, without any intention of indulging in lavish meals or going to high-end restaurants.

After all, having experienced four years of extreme cold and apocalypse, these ordinary foods were already an incredible luxury for him.

While enjoying this hard-won tranquility and delicious food, I silently planned tomorrow's itinerary.

Time flies, and it was already 9 p.m.

After dinner, Chen Yu strolled through the streets of Jianglin, feeling the pulse of the city.

The buildings lining the streets appeared exceptionally tranquil under the cover of night, with only the occasional passing vehicle breaking the serenity.

The thought that this comfortable and peaceful life would last for less than 20 months made Chen Yu feel a little sad.

What's meant to happen will happen eventually; it's inevitable. However, as long as he makes sufficient preparations, he won't live too miserable a life in this lifetime.

Taking a deep breath of fresh air, Chen Yu was filled with anticipation and determination, and then quickly returned to the hotel.