Lu Chengfeng was washed into a cave by the torrent of the underground dark river, and there was a powerful barrier at the entrance of this cave that blocked the intrusion of groundwater, but people could enter and exit at will, or Lu Chengfeng could enter and exit at will.

In this underground cave, there is a majestic aura of heaven and earth, which is extremely rich, and there is even a place where Lumen Mountain Villa Yi cultivates.

Although Lu Chengfeng was seriously injured, under the nourishment of the rich heaven and earth aura, the Heaven Devouring Decision in his body operated on its own, and then it urged the Nirvana Sutra in his body.

This is the first time that Lu Chengfeng has not been rejected since he practiced the Heaven Swallowing Decision and the Nirvana Sutra at the same time, on the contrary, there is a complementary situation, repairing the injuries in Lu Chengfeng's body together and restoring the true qi in his dantian.

Lu Chengfeng gradually woke up, but the severe pain in his body still made him unbearable, and he almost fainted again.

Lu Chengfeng knew that he was lucky this time and picked up a life, he had a feeling of being reborn after a catastrophe, but he didn't have the slightest strength to support him to laugh.

Lu Chengfeng lay on the ground like this, and gradually shifted from self-running the two major exercises to actively running the exercises, although the speed was far less than before, but it was getting better little by little, which gave Lu Chengfeng great hope.

In this cave where there is no day or night, Lu Chengfeng doesn't know where the light emanates from, but he can only lie like this, and there is no way to explore this cave.

Fortunately, Lu Chengfeng has not encountered any other creatures living in the cave so far, to be precise, he has not encountered any large animals that can threaten his life.

Lu Chengfeng didn't know how much time had passed, but he knew that the true qi in his dantian was getting more and more abundant, and now he could walk normally, although it was a little difficult, but it was much better than the appearance of the living dead before.

"I didn't expect that this time it would be a blessing in disguise, and the accident caused the Heaven Swallowing Decision and the Nirvana Sutra to have a tendency to merge......"

At least the two completely different forces are no longer mutually exclusive and conflicting in Lu Chengfeng's body, it is like a patient who has been suffering from mouth ulcers for a long time, and suddenly one day this disease will be cured, not to mention how happy he is.

And in addition, the demon qi in Lu Chengfeng's body seems to have weakened a little, replaced by a more pure aura, but it is completely different from Confucianism, Buddhism and Taoism, it seems to be independent of the Confucianism, Buddhism and Taoism demons, if the real demon is compared, it seems to have similarities with these four breaths.

This can allow Lu Chengfeng to better hide his breath, which is quite a bit of a return to the basics, and Lu Chengfeng can clearly feel that the realm barrier in his body has been loosened.

This can be regarded as a great calamity, and there is a blessing in the future.

After Lu Chengfeng regained some strength, he began to explore this underground cave, and found that it was unexpectedly large, as if it was a huge underground world.

Lu Chengfeng began to be a little confused, he entered the underground river from a well in the capital, and he didn't know if his current location was still under the capital, or if he had already left the scope of the capital.

It's just that Lu Chengfeng doesn't understand how there can be such a huge underground space underground, it stands to reason that although there are several mountains around Jinling City, it is still in the lower reaches of the Yangtze River after all, it belongs to the alluvial plain, mainly sedimentary rocks, and the terrain is low-lying, it is impossible to produce such a huge underground space, but this reality appeared in front of Lu Chengfeng, and he couldn't help but believe it.

What's more, he is a person who has experienced a rebirth and has seen the demon clan, and this place is a bit abnormal.

Anyway, this world has already subverted Lu Chengfeng's scientific cognition in his last life.

Although Lu Chengfeng had seen many incredible things, when he saw new and strange things, he still couldn't do it.

Perhaps many of his worldviews are based on the earth's scientific and technological civilization, so he feels strange about things that people are accustomed to, or his advanced understanding of the world makes him look at problems at a deeper level than when people in this era of this world look at some problems.

The richness of the heaven and earth aura in this place is far better than that of other places, at least Lu Chengfeng has never seen a place where the heaven and earth aura can reach this level since he came to this world, especially now that his realm barriers have been loosened, for him, this is an excellent place to cultivate.

If this place is not deep underground, it can definitely be called a blessed land, but there are still many places here that have not been explored, and Lu Chengfeng must ensure the absolute safety of the surrounding environment before he can relax and prepare to break the realm.

Moreover, he is only now that the realm barrier has been loosened, and he has not returned to his heyday, on the one hand, he is constantly exploring this underground world, and on the other hand, he is also constantly cultivating with the help of the rich heaven and earth aura here.

The heaven and earth aura in this place is so abundant, it is very likely that there is a spiritual vein hidden in the depths of this earth, otherwise even the world's top spirit gathering array would not be able to gather such a majestic aura, at least the formation grandmaster of the Jindan realm cannot do it.

"It's a pity, if we can find the spaceship, maybe we can explore this world more deeply with the help of instruments. ”

Lu Chengfeng couldn't help but sigh, although this world is currently dominated by cultivation civilization, it is impossible to completely deviate from the scientific theories that Lu Chengfeng has learned.

If he can use the power of science and technology to explore the cultivation of this world more deeply and consciously, maybe he will be able to know the scientific theory of the cultivation civilization, and even use the power of the scientific and technological civilization to make his cultivation easier and faster, and even break through the Jindan realm, the highest realm that cultivators in this world can reach, and reach a higher realm.

More importantly, if the two civilizations can complement each other and learn from each other's strengths, then the civilization of cultivation and the civilization of science and technology will undoubtedly collide with a more brilliant light of civilization.

But the most basic premise of Lu Chengfeng is to be able to successfully find the remains of the spaceship, otherwise, with the productivity of this era, even if he is extremely poor all his life, he will probably only be able to promote this world into an industrial society as soon as possible, let alone the collision and integration of civilizations.

Lu Chengfeng didn't know how long he had been walking deep underground, but he felt that the light was getting stronger and stronger, and it seemed that he was about to find the source of the light in this place.

And when Lu Chengfeng saw those light sources, he really couldn't believe that what he saw with his eyes was the truth.

Such a shocking scene is enough to make people crazy.

The walls are inlaid with the priceless night pearls on the earth, even in this world, the night pearls are extremely precious.

Lu Chengfeng's first thought was that he was going to get rich, although he is now a cultivator, but he is also very yearning for a better material life, although the practice is very fortunate, but life in the world is to enjoy it while he is young.

Of course, these are all based on their own struggles, otherwise everything is empty talk.

Moreover, the night pearls inlaid here are the top ones, and the light is more intense than the ordinary night pearls.

Looking at these walls and the night pearls in his eyes, Lu Chengfeng realized that this was not just an underground world, but that someone had already developed this place to a certain extent a long time ago, and the place must be a big man who was rich and rivaled by ordinary magnates, and even the emperor was not as rich as the other party.

Lu Chengfeng excitedly deducted a night pearl from those walls, he found that these night pearls actually contained aura, and it was very pure, this can only be artificially generated, then the other party is not only rich and rival the country, but also an extremely powerful cultivator, at least no less than a Jindan immortal.

But apparently this place has been many years old, and maybe the other party has already turned into a skeleton.

Even if it is as strong as a Jindan immortal, it still can't resist the erosion of time!

Throughout the ages, there have been many people who have longed for immortality and pursued immortal questioning, which is especially prosperous in this world.

But the same is true on the earth, although it seems a little impossible, there are still countless scientists who are constantly researching, hoping to know the way to extend the life span of human beings, but hundreds of years have passed, and no one has been able to succeed, it can only be said that with the improvement of medical standards, people's life expectancy has generally increased, but it is not yet able to reach the level of this world to practice to extend life.

A Jindan Immortal almost has a life span of more than two hundred years, even if it is a great cultivator of the Foundation Building Realm, he can generally live to be more than a hundred years old, although it is not as exaggerated as in the novel, but for Lu Chengfeng, who has experienced it personally, this is already a very incredible thing, at least in some aspects, the cultivation civilization is indeed more superior than the scientific and technological civilization.

This is also an important reason why Lu Chengfeng hopes to one day be able to integrate scientific and technological civilization and cultivation civilization.

Looking at these night pearls containing pure aura, Lu Chengfeng felt more and more that the spiritual veins here were extraordinary.

This underground world is simply like the world's greatest wealth, and its value is immeasurable for both ordinary people and cultivators.

Compared to the rich aura of heaven and earth here, the pure aura contained in these night pearls was easier to be absorbed and transformed by Lu Chengfeng, which also greatly increased the speed of Lu Chengfeng's cultivation and recovery.

In addition to the underground world itself, Lu Chengfeng is also very interested in the people who transform this place, among the Night Pearl that can store the purified aura, not everyone can do it, especially after Lu Chengfeng absorbed the aura inside, he found that the Night Pearl did not break the balance of power because of the disappearance of the aura, making the Night Pearl break, it is not easy to do this.