The two followed the little yellow bird through the waterfall and came to the back of the waterfall.

Qi Chu discovered that this was a naturally formed cave.

The entrance of the karst cave is not big, and it looks a bit mysterious and hidden in the dark.

However, because of the white stalactites, it is not scary.

The little yellow bird turned around and yelled at the two of them, then plunged into the cave.

Following its movement, the entrance of the cave suddenly lit up.

At this time, Qi Chu realized that there were night pearls of different sizes on the wall of the cave.

The luminous pearls are not neatly arranged, more like a natural formation.

He clasped Qin Le's wrist: "follow me closely."

After finishing speaking, he followed the little yellow bird and walked inside.

As soon as you enter the cave, you can feel the cold wind blowing in your face.

The whistling wind made people feel a sense of fear in their hearts.

However, these did not bring any obstacles to Qi Chu.

While admiring the stalactites in various poses and with different expressions, he observed the surrounding environment.

The path of the cave is relatively long, but the inner diameter is a bit small.

If someone blocked the hole, entering or leaving would be a big problem.

However, caves like this generally have several exits.

So, there shouldn't be any issues with this.

The opening of the cave is small, and large animals cannot enter it.

Coupled with the waterfall as a hiding point, it will not be discovered by others.

This is an excellent hiding place.

Suddenly, the scene in front of him opened up.

Looking up, I saw some corroded small holes on the top of the cave.

Water droplets flowed down the small hole, forming a tiny pool.

Next to the pool, there is a green grassland.

On the other side of the grass, there is a huge, very flat rectangular stone.

The surface of the stone is polished smooth, very clean and tidy.

The sunlight filtered in, reflecting the grass onto the cave walls.

The whole cave presents a touch of greenery, quiet and ethereal.

Qi Chu clicked his tongue twice: "I didn't expect that there would be a hidden world here."

As he spoke, he walked to the big rock and patted it: "Does it look like a stone bed?"

"Stone bed?" Qin Le was taken aback for a moment, and then his eyes were attracted by the stone.

The stone is about two meters wide and two meters long, but only thirty centimeters high.

The surface is smooth and neat, and it is indeed a bit like a bed to sleep on.

However, this kind of stone will definitely catch a cold when you sleep.

Just as he was thinking, he heard Qi Chu gasp twice, and quickly asked, "Brother, what's the matter?"

Qi Chu touched the stone with both hands, wondering: "It's actually warm?"

"Warm?" Qin Le also stepped forward and touched the stone bed.

Getting started is not as cold as imagined, but slightly jade-like warmth.

Moreover, he feels that the texture of the stone is not as hard as he imagined, but more like a little toughness.

It's an indescribable feeling.

"It's probably a specialty here." Qi Chu thought for a while and said.

At this time, the little yellow bird flew to the stone bed and stopped.

It raised its head and barked twice at Qi Chu, with an unusually clear voice.

Qi Chu also discovered this.

Before, the sound of this little guy was more like a chicken, or a chick.

Now, gradually returning to the crisp, ethereal feel that birds should have.

"Joan, what the hell are you?" Qi Chu didn't reach out to flick the little guy's head this time, but stared at him quietly.

After hearing Qi Chu's question, the little yellow bird fluttered its wings and flew to the wall.

Then, it pecked somewhere with its sharp beak, and colorful murals suddenly appeared on the wall.

Qi Chu leaned over and carefully observed the mural.

The murals are very abstract, and it can be seen that many humanoid creatures gather beside a large spaceship.

Some of the humanoids boarded the spaceship, while others stayed behind.

Then, the spaceship took off.

It feels like flying for a long time in the middle, because the color of the spaceship has become lighter.

Until, the spacecraft suddenly cracked open and fell to a certain planet.

The planet turned into a vast ocean after being destroyed by a spaceship.

And the spaceship split in two, one half sank in the sea, and the other half floated in mid-air.

"Brother, is this a floating island of white dwarfs?" Qin Le asked suddenly.

Qi Chu nodded clearly, and said, "Looking at this mural, the floating island should be formed when alien creatures arrived here."

"Alien?" Qin Le scratched his head: "Our technology is so advanced, and the planets of sharp-eared, Zerg, and Treant creatures have established diplomacy. Why can this alien creature pass through us silently?" Galaxies getting here?"

Qi Chu touched his chin and asked, "Have you heard of the four-dimensional time and space?"

"High latitude?"

"Almost." Qi Chu smiled and said, "We live in a three-dimensional space formed by X, Y, and Z coordinates. We don't have the ability to control time, and four-dimensional space-time includes time in addition to three-dimensional space. That’s why it’s called four-dimensional space-time.”

"Back to the future?" Qin Le suddenly thought of the sci-fi movie that he and Qi Chu had watched before.

"It is possible that these so-called alien creatures are actually ourselves, but future humans who have returned from high latitudes." Qi Chu continued: "However, in their eyes, these histories are the cause, and they are the effect. , so whatever happens to us, they can't intervene, they can only wait and see."

Having said that, Qi Chu paused for a few seconds.

In fact, he always felt that the appearance of the little yellow bird was very strange, as if he picked it up on purpose.

And taking myself to this primeval forest and cave may also have something to tell myself.

"Then this bird is their microphone?" Qin Le pointed to the little yellow bird and said.

After hearing Qin Le's words, the little yellow bird flew in front of the other party, agreeing with the words.

Qi Chu's eyes moved with the little yellow bird, and he said to himself: "According to common sense, two dimensions cannot be touched..."

At this time, the little yellow bird's stomach growled.

Called back Qi Chu's attention.

He looked up and saw that the light penetrating in from above dimmed, and guessed that this place should also have the same day and night law as the white dwarf.

And now it's time for dinner.

There is not much food in Qi Chu's space button, only a few bottles of concentrated nutrient solution.

Unless it is absolutely necessary, these bottles of nutrient solution should not be touched casually.

"What's for dinner?" Qi Chu thought.

The little yellow bird suddenly plunged into the small pool in the cave.

Within 2 minutes, several small white fish were thrown up.

Qi Chu's eyes lit up, and he agreed, "That's a good idea."

He found a few stones and blocked the entrance of the cave.

Later, a soft dry grass was found next to the waterfall.

After he wiped the stone bed, he spread the hay on it.

Then he took out all the camping equipment in the space button.

Sheets, blankets, sabers, portable cups, bowls, etc.

After eating the feast of fish and meat, both of them were quite satisfied with each bird.

But at this moment, Qi Chu remembered one thing.

He seems to have forgotten to treat Qin Le's wound.

Although Qin Le's wound was not serious, he was still afraid that the suckers on the sea beast's tentacles were poisonous.

If it leaves bad sequelae for this kid, it will be troublesome.

The medical device that treated the little yellow bird before can be used again.

And that medical instrument also has the functions of scanning and detoxification.

The man took out the medical device from the space button, and said to Qin Le, "Take off your clothes."

Qin Le looked at the medical instrument and was stunned.

Then he replied immediately: "Brother, my injury is not serious, so I don't need this."

Qi Chu raised his eyebrows and threatened: "You take it off yourself, or should I strip you naked?"

Qin Le, who was choked, was a little helpless, but obediently took off his shirt.

He knew that Qi Chu was a very persistent person.

When I was in the military academy before, Qi Chu used a ruler to smack the palm of my hand when I was disobedient.

Qi Chu nodded in satisfaction, and pressed the switch of the medical instrument.

The medical instrument beeped twice, and the electronic voice said flatly: "Turn on the wound healing mode."

The red rays of light formed a net, sweeping across the youth's fair, firm upper body.

In the swept area, the naked eye can see that the small wounds have begun to heal, and even the larger wounds have shrunk a lot.

The treatment process was very fast, and the red light disappeared within 2 minutes.

Then, a green light flashed: "Turn on the body scanning mode."

Qi Chu said: "There is something wrong with that sea beast, it depends on whether there will be any sequelae."

As soon as the words were finished, the medical equipment beeped and ended the scan.

A flat, electronic sound without any ups and downs played: "The body functions normally without any abnormalities."

Upon hearing this, Qin Le quickly said, "I said I'm fine."

At this time, the electronic voice suddenly interjected: "After scanning, the tester is in estrus, and manic fever may appear at any time."

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The author has something to say:

To tell the truth, I prepared the bed for you, and simply rolled it for a few days to mark it, and don't ink it!

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