Lin Feng who felt comfortable all over suddenly realized something.

It stands to reason that when this kind of underground building is built, many airtight methods will be used to ensure that there is no oxygen inside the building.

Although the ancients did not understand the principle, they still understood the need to seal and preserve strokes and various utensils.

Therefore, various means are generally used to ensure that the underground palace is a confined space.

However, after Lin Feng pushed open the folding stone door, there was a cool wind blowing over, which proved that there was circulating air, which was completely unreasonable.

"The ancients probably wouldn't play their cards out of routine, unless"

A flash of inspiration flashed in Lin Feng's mind, and he thought of a possibility, and there was probably only one possibility.

that is the underground river

You must know that in ancient times, water can be said to be the most important resource for human survival, especially this kind of ethnic group that is located in a desert area and is extremely scarce in water.

For them, water is a precious resource that cannot be bought with money.

Lin Feng guessed here that maybe the ethnic group living here discovered the underground river hidden under the surface when building this underground palace.

But they can neither give up the palace under construction, nor can they leave such precious resources behind.

That's why we opened such a shabby-looking small door on the side of the main hall.

To make it easier for them to fetch water or do other things related to water sources

In order to confirm the conjecture, Lin Feng moved half of his body into the crack of the door, and then sniffed the air with his nose.

Sure enough, with his extremely sensitive sense of smell, he immediately felt that the humidity in the air was completely different from that outside the door.

The air outside the door was quite dry. Even though Lin Feng had escaped from the scorching surface and went deep underground, he could still feel the heat in the air.

But the inside of the door is different. Due to the isolation of this sealed stone door, the air inside is completely undisturbed by the outside climate, it is very cool, and the humidity is very high.

Coupled with the feature of air flow, it is enough to convince Lin Feng that there is an underground river here.

that is really good

At this moment, the joy in Lin Feng's heart is not as high as that of a complete antique dug up on the next journey.

Because with water, it is almost equal to ensuring his life safety

You must know that people can endure without food for three or two days.And if there is no water to drink for three or two days, especially in the extreme environment of the desert, there is absolutely no possibility of surviving

Today's Lin Feng is close to running out of ammunition and food. How can he not be excited when he sees the possibility of a water source?

At this time, the audience in the live broadcast room had recovered from Lin Feng's perverted way of breaking the door. Seeing the joy on Lin Feng's face, they all asked if Lin Feng had discovered anything.

When Lin Feng told everyone about his feeling and inference about the humidity in the air.

Everyone has almost maintained the same opinion, that is, there must be an underground river here

After getting everyone's confirmation, Lin Feng's confidence became more firm. At the same time, he also believed that in a place like the water source, no one would design any hidden weapons or killers. After all, his own people also need to obtain drinking water. It would be wrong to accidentally injure a clansman.

So Lin Feng didn't delay at all, he took a flashlight and took a look inside, and after seeing the general terrain of the passage behind, he dodged and rushed into the door

The architectural style of the passage behind the door changed suddenly.

The gorgeous aisle in front of the palace on the other side of the different gate, although this aisle is also made of large stones, the overall style is more simple.

There are no carved patterns or painted murals, but simply piled up with stones.

Now Lin Feng was more sure that there would be no danger here, so his steps became lighter.

He walked for about three or two minutes along this corridor, which was only as high as a person, before he felt a very subtle sound coming from a distance in front of him.

Lin Feng raised his ears to listen, and sure enough, he heard the sound of gurgling water coming from a distance, so he quickened his pace again, and walked inside looking for the sound of water.

Soon, he came to the end of the stone passage and came to a small natural cave.

He looked back and saw that the end of the stone path was just the side wall of this natural cave. It seemed that the ancients here dug through this cave when they built this passage.

Maybe the cave itself leads to the water source, so the predecessors no longer need to pave the road.

The terrain of this cave is very low, and from the perspective of direction, it should slowly lead to deeper depths along an oblique angle.Lin Feng walked down very deeply, and came to a natural stone cave with a hammer height of seven or eight meters.

This is also a natural cave, but on the floor of the cave, there is an obviously artificially carved path leading to a small puddle in the center of the cave.

The puddle is not big, about three or four meters in radius.But the strange thing is that in the center of the puddle, there is a protruding open space, like a trail in the middle of the lake.

When Lin Feng saw the puddle, he unconsciously muttered up and down a few times, obviously he was so thirsty that he wanted to plunge his head into it and drink.

So he took three steps and made two strides, and in a few strokes he came to the edge of the pond, assuming he was about to sink his head and drink.

But at this moment, a group of "bricks" in the live broadcast room hurriedly stopped Lin Feng.

"This kind of groundwater has been flowing for many years, and I don't know whether it is stagnant water or living water. If there are some unclean things in it, the consequences of drinking it will be disastrous."

"That's right, the anchor now doesn't have water purification tools, let alone first aid, so he should be more cautious."

"The anchor first checks to see if there are no living things in it, so it can be sure that the drinking water is safe to a large extent."

When Lin Feng heard the first half, there were at least ten million muddy horses running in his heart.It's so hard to find a source of water, and I can't drink it. It's more uncomfortable than having no water to drink.

However, when the last person gave a suggestion, Lin Feng seemed to have grasped the last bit of hope, and immediately bent down hopefully to observe, wanting to see if there were any creatures in the water.

In the end, what excited him was that in this small pool of water, there were indeed small fishes as thick as chopsticks swimming for several days.

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