Author: Chen Xiaokun

Lin Fan looked at the poor little boy who had softened the shell in his hand, and stuffed it back into its original position on the box.

"You guys still can't watch?" Xingchen stretched out his big head and turned towards the outside. He thought he was an artificial camera and scanned the place where he could take pictures again. "If it's almost the same, I'll close the door."

Theoretically speaking, it would be perfectly fine for Xingchen to go down and take a lava bath.

But Lin Fanlao looked at the red magma below and felt a little scared.

The video footage has almost been collected, so there is no point in leaving the door open.

Xue Ping directly asked Lin Fan to close the door and move forward.

Once the panoramic camera broke, only the camera on Lin Fan's hood was still in use.

Although the viewing angle and automation are not as good as drones, they are still better than nothing.

When the danger is eliminated, they can go in and record whatever they like. Under the current conditions, there is naturally nothing to choose from.

Lin Fan searched all the way and finally opened a door that was not meant for the outside.

She looked at the dim lights and countless pipes inside, and put the instrument in her hand to measure air quality and harmful substances first.

"Speaking of which, I feel a little strange." While waiting, she said to the person on the other side of the headset.

"Say." John Woo answered.

Xue Ping was staring at the values ​​on the instrument and had no time to talk.

"This place has been closed for a long time, right?" Lin Fan leaned against the door and placed the small box in his hand on the floor inside the door.

This thing was nothing to Xingchen, and it was still a bit heavy for her to carry.

"According to the geological survey results, the surrounding rocks were formed at least three thousand years ago." Xue Ping replied, "The environment inside is safe, you can go in."

Lin Fan glanced at the numerical value above, picked up the small box, stepped into the inner room, and asked at the same time. "So where does the air in this place come from? Normally, in a sealed space that has been sealed for so many years, the air content will be different from the outside world.

Is it the same?"

Don't say she is uneducated.

She has also seen a lot of tomb robbery movies. In many sealed tomb passages, there may not be any air at all. Or there may be some old poisonous gas.

Although this place is not a tomb passage, isn't the principle the same?

Even though the house in her hometown has been vacant for a long time, there was an indescribable smell when she went back to pick up clothes last time.

But here...

Lin Fan sniffed hard and said, "I don't know if it's my imagination, but it feels like the air inside is a bit fresher than outside."

"It's not an illusion." Xue Ping immediately added, "From a numerical point of view, the air quality inside is indeed much better."

Feelings are subjective, but numerical values ​​are scientific and objective. Lin Fan's feeling is correct.

The space they are in is more than ten kilometers underground.

Let’s not talk about the heat. Although there is a passage connecting to the outside world, the distance is too long after all, and the air quality is not that good.

Coupled with the heat and the crowds, it really smelled a little bit of everything, and it wasn't really comfortable.

"So, is this reasonable now?" Lin Fan's uncomprehending voice came through the instrument again. "Even if there is an air purification device in here, it can't be turned on all the time... right?"

She suddenly stopped, "But then again, it responds as soon as I touch it... The equipment here seems to be always on, it just seems to be sleeping... That means..."

"This thing is always on standby." Xue Ping crossed his arms over his chest and leaned back, "otherwise it wouldn't be able to respond so quickly."

The more complex and precise the instrument, the longer it will take to start up.

Because it involves many parts, system response, etc.

Anyway, when Lin Fan stepped in and the lights immediately came on, they had discussed this possibility outside.

"Then, keeping it running for so many years must require a lot of energy, right?" Lin Fan continued walking along the pipeline, and suddenly his eyes lit up.

"Hey! There are stairs." She quickened her pace and trotted over, "It's the stairs going up!"

When inspecting the equipment room and exploring upwards, most people chose to go upwards.

Lin Fan held on to the escalator and walked up carefully. Xue Ping also took the opportunity to answer the question that he had not had time to say just now.

"Normally, hibernation does not require a lot of energy. But it also depends on the specific situation. You have been walking for so long and you haven't even finished the first floor. Proportionally speaking, you are not a little guy."

The more Lin Fan walks, the larger the 3D map becomes, and the smaller the new route her walking extends becomes.

This high-tech unknown space that they thought was the ruins of an ancient city-state is much larger than they imagined.

While excited, everyone was also filled with emotion.

In a place they didn't know, it turned out that such high technology had long been dormant underground.

Compared with the scene they see now, the progress they were so proud of in the past seems not worth mentioning at all.

"So, is it possible that the magma is actually a kind of energy?" Lin Fan somehow came up with this idea when he was listening to their discussion through the headphones.

"You're saying that in order to maintain its energy needs, the builders here specially placed magma underneath for heating..." Wu Yusen glanced at Xue Ping and felt that this idea... didn't seem impossible.

"That's right. Isn't it said that energy conversion is conserved?" Lin Fan explained with his rudimentary knowledge, "The magma generates such a large amount of heat energy. Since it can be converted into other energies, why can't it be converted into other energies that maintain this big thing?

?”

Everyone outside looked at each other, and someone immediately ran to the side and began to calculate the possibilities.

Lin Fan was still talking.

"If the magma was moved here specially for use, then it would make sense why the magma exists in such a shallow location. It has been sealed here for so many years and the energy has not been cut off. Doesn't it also make sense?"

As for how to move the magma over...

Sorry, that was beyond the scope of her knowledge, so Lin Fan automatically skipped it.

"You are right, this is indeed a possibility." Xue Ping praised, "You are still smart and have provided us with a very good direction!"

Lin Fan's vanity was greatly satisfied, and he finally reached the upper floor with his head held high.

There are many similar pipelines, there are many but not cluttered, and even if you have obsessive-compulsive disorder, you will praise them.

Following the impression just now, I found the location of the door, opened it and went out.

"Look, the air is still qualified." Lin Fan stretched out the instrument again and looked at the values ​​​​on it and said.

After a few times, she had memorized the normal values.

There is still no one in the corridor, it seems no different from the lower level.

But when advancing through the conveyor belt, Lin Fan still felt the space change. There were also more signs and doors on the wall.

Just now, down there, there were only doors on one side of the outer wall, and each door was far apart. But now, no matter on the left or right, there is a door not far apart.

Lin Fan didn't understand architectural structures, so she just shook her head as much as possible while watching so that the camera could record it more comprehensively.

Because she had just stepped onto this floor, there was too much uncertainty, and she did not dare to open the door rashly like she had just done on the lower floor.

Finally, when the map running progress reached two-thirds of the lower level, Xue Ping issued a new order.

"Lin Fan, open a door and take a look."
Chapter completed!