Look around.

The valley is very small, it is more like a valley, it is more like an open-air cave composed of potholes and rock walls, and this small valley is surrounded by many hills, which is extremely difficult to enter, and because there are many strange rocks around, the sight becomes very poor, and you can't see the outside world when you stand here. If an ordinary warrior team came here, they would never think of entering the valley to rest, otherwise they might not know it when the enemy came to them.

If it weren't for the map Liu Feng gave him, Lin Xiao wouldn't have taken a second look at this small valley when he passed by.

"Forget it, now that you're here, let's go in and have a look. Lin Xiao slowly walked into the small valley and moved forward for a distance, but the surroundings were still empty without a trace of change.

"Maybe there used to be some treasure here that caused the vitality to be abundant, but then it was destroyed by people or demon beasts, and the vitality also escaped. Lin Xiao shook his head, turned around and was about to leave, when suddenly, a breeze blew from the valley, and the outside world vitality that Lin Xiao's body had originally absorbed on its own doubled in an instant.

"Huh?" Lin Xiao's eyes widened suddenly, and he turned to look at the interior of the valley in surprise, his eyes revealing shock.

The Heaven and Earth Yuan in the previous breeze turned out to be twice as large as the outside world.

Sou

Lin Xiao's figure turned into a streamer of light and quickly rushed into the valley.

airplanes

When entering the middle of the valley, the Heaven and Earth Yuan Qi, which was originally not much different from the outside world, skyrocketed in an instant, reaching twice as much as the outside world in an instant.

"Amazing place. Lin Xiao was really surprised this time.

The so-called Heaven and Earth Yuan Qi is the energy particles that exist between the Heaven and the Earth, they are erratic, formless and colorless, and the form and smell are average, but if the Heaven and Earth Yuan Qi in a certain place is condensed relatively strongly, there will usually be a gradual process, from light to thick. However, the Heaven and Earth Yuan Qi in this valley was not, but when it passed through a certain location, the original normal Heaven and Earth Yuan Qi instantly doubled, as if there was an invisible barrier in the middle.

"What's going on?" Lin Xiao wondered in his heart, and his figure quickly stepped forward.

The valley was silent, frighteningly cold, but there was no danger at all.

"Hum" After advancing a hundred meters, the Heaven and Earth Yuan Qi absorbed by Lin Xiao's body skyrocketed from twice the normal amount before to three times.

"This is ......," Lin Xiao continued.

Fourfold......

Five-fold ......

Sextuple......

Lin Xiao advanced only a distance of a thousand meters, for him, a second-turn true martial artist, this distance only took less than twenty seconds to fly with all his might, even if the Zhilu Dao Valley was extremely weird, and if he was careful, it only took less than a minute, but in this short one minute, Lin Xiao felt that the Heaven and Earth Yuan Qi absorbed around his body had skyrocketed from twice as much at the beginning as ten times as much as it did now.

Ten times the Heaven and Earth Yuan Qi of the outside world, such a shocking scene shocked Lin Xiao's heart.

This is equivalent to absorbing more Heaven and Earth Yuan Qi from one day of cultivation here than ten days of cultivation outside.

After all, the richer the Heaven and Earth Yuan Qi, the more convenient it is to absorb it, and the less time it takes to transform it.

"There is a really anti-heaven place on the periphery of this Lianyun Mountain Range, and it has not been discovered, it is really incredible, if it is known by a certain power force, I am afraid that this force will immediately become a force in the entire Xuanyi County, and even in the entire Martial Spirit Empire within a few decades. ”

Lin Xiao was speechless, his eyes were full of shock.

After all, if he could cultivate in such a place, any martial artist with ordinary qualifications could become a peerless genius. Think about it, if you cultivate here for a year, it is worth ten years of cultivation in the outside world, unless the qualification of this martial artist is so low that he cannot cultivate at all, otherwise any ordinary martial artist who cultivates here will be higher in level than those so-called geniuses in the outside world.

After all, the so-called genius usually absorbs the vitality of heaven and earth at about twice the speed of ordinary martial artists.

Of course, the cultivation of exercises and martial arts requires understanding and qualifications, which cannot be solved by simple vitality.

"What is strange in this valley?"

After the shock, Lin Xiao gathered his mind and looked ahead, the front was empty, and nothing existed.

When Liu Feng told him before, he said that there were some quite powerful demon beasts entrenched on the periphery of this valley, so that he couldn't go deep at all. But at this moment, Lin Xiao had already come to the deeper part of the valley, but he had not encountered Liu Feng's so-called danger, and Lin Xiao, who was puzzled in his heart, immediately flew forward cautiously again.

The valley was not big, and Lin Xiao came to the deepest part in a moment.

"It's ...... A cave?" There was nothing at the end of the valley, only a dark cavern, as if it had been formed naturally.

Such caves can be seen everywhere in the Lianyun Mountains, but I don't know what it is, as soon as Lin Xiao came to this cave, there was a penetrating feeling rising from the back of his head, and his heart was faintly hairy, as if this cave was a huge mouth opened by a demon beast, once he entered, there was no life or death, full of danger.

Streams of rich heaven and earth vitality erupted from this cave.

Obviously, the reason for the vitality in this valley is caused by this mysterious cave.

Lin Xiao hesitated for a moment, and then gritted his teeth and entered.

The cave was pitch black, and ordinary martial artists couldn't see at all, but fortunately, Lin Xiao's spiritual power was extremely powerful after reaching the first grade, and everything in the dark cave was full of his heart under the perception of spiritual power.

Along the way, Lin Xiao saw the corpses of many demon beasts, as if they had just died.

"Could it be that the corpses of the demon beasts here are the demon beasts in the valley that Liu Feng said. Lin Xiao was puzzled in his heart, and carefully looked at the corpses of these demon beasts, but found that these demon beasts had no scars on their bodies, and there were no traces of fighting, all of them maintained a forward posture, as if they had suddenly died during the march.

This discovery made Lin Xiao creepy, and he died quietly without scars, as if his soul was sucked away in an instant, leaving only a shell.

Lin Xiao frowned slightly, his fingers lightly put on a demon beast and wanted to use his spiritual power to check the other party's body, but when his hand just touched the body of this demon beast-

disheveled

It seemed that thousands of years had passed in an instant, and the demon beast in front of Lin Xiao turned into decay and weathered in an instant, and in a snap of a thousand years, it instantly turned into a pile of ashes, leaving nothing behind.

"This"

Lin Xiao was so startled that he stood up instantly, his cold hair stood on end, and his palms were sweaty.

In the dark, it seems that there is a mysterious force that erodes everything here.

Swallowing his saliva, Lin Xiao touched several other demon beasts, without exception, these demon beasts seemed to have passed thousands of years in an instant, and they all turned into a pile of ashes.

"What is in the depths of this cave?" Lin Xiao looked at the deep cave, and there was an unknown fear in his heart.

"Go" gritted his teeth, and Lin Xiao continued to move forward.

I don't know how far the road has advanced downward, and suddenly there is a sound of water in the cave in the distance.

A huge karst cave appeared in front of Lin Xiao's eyes, cold and damp, and an underground river slowly waded through, making a rattling sound.

In this unknown number of meters of underground, the surrounding heaven and earth vitality was actually maintained at ten times the level of the outside world, and it did not dissipate, but became more dense and clear.

"This is ......" Suddenly, Lin Xiao was shocked, and the corpses of some demon beasts appeared densely in front of him, each of these corpses was dozens of zhang long, and some were even hundreds of zhang high, washed by the water in this dark underground river, mottled, and I don't know how long the road had been dead.

Although there were only some bones left, Lin Xiao could still feel a trace of tremendous oppression from their huge bodies, just from the dead corpses of these demon beasts, he could feel how glorious their previous lives were.

Touching the bones of these demon beasts with his hand, they were cold and damp, but they did not instantly turn into dust like those demon beasts in the cave before, these dry bones had long been mottled and pitted, and had long been turned into fossils by the passage of time.

"What kind of monsters are these? Why would they die in this unknown underground? Lin Xiao was shocked in his heart, every skeleton here was extremely desolate and ancient, as if it had experienced hundreds of millions of years of vicissitudes. Even the weakest-looking skeleton was countless times more terrifying than the most powerful four-star mighty demon ape Lin Xiao had ever seen before.

The heads of each of these monster bones were towards the deeper underground, as if they were roaring and roaring.

"What is there underground?" Lin Xiao continued to fly, a huge corpse kept appearing in Lin Xiao's eyes, and the deeper he went, the more powerful the predecessor of those demon beast corpses seemed to be.

Suddenly, Lin Xiao was shocked, and his eyes widened and he looked ahead.

In the depths of the dark underground, there was an ancient city, this city is full of stone spots, potholes on it, it has already become a deserted city under the passage of time, giving people a feeling of old and simple, like the ancient flood era of buildings, returning to the world.

Around the city, countless monster bones surrounded it, and the claws of some huge monsters even slapped on the city wall, and the heads of some monster bones poked into the city wall, roaring and roaring.

"Is this a demon beast attacking the city?" Lin Xiao was shocked in his heart and thought of a possibility.

But after a while, Lin Xiao shook his head again, the era of great destruction happened more than two thousand years ago, every magnificent battle has been recorded in history, and the scale of this underground city in front of him is at least at the level of a county city, but Lin Xiao has never heard of the existence of a county town in this Lianyun Mountain Range.

What's more, this ancient city is buried deep underground, and some of the patterns and decorations on it are not like modern styles, but like buildings from ancient times.

"Huh" Lin Xiao flew through this deserted city, the whole city was empty, only the stone buildings were preserved, but they were also pitted, and they lost their original appearance under the erosion of time.