Heaven and Earth have always been places unknown and yearned for by humans.
The ancients questioned how high the heavens were, how thick the earth was, and what lay within.
Even after countless years, these remain questions unknown to the masses.
What exactly lies deep within the earth, and what exists there? What exists at the highest point of the heavens? These are all fantasies of people throughout the ages.
Even a sage in this world, looking up at the heavens and down at the earth, would not know the reason behind it all.
Rumor has it that only the ancient emperors traveled the three mountains and four seas, the nine heavens and nine netherworlds.
As to whether it is true, it is no longer known to later generations.
Jiang Wen also doesn't know how far into the earth he has gone.
His divine sense has been compressed to a range of only about ten meters around him.
Clearly, this place is not very friendly to cultivators, and there is even some kind of power suppressing them.
Feeling that the flow of mana in his body was slightly stagnant, Jiang Wen asked Agu beside him, "Do you feel any discomfort?"
"No."
Agu shook his head, not feeling anything at all.
He just sees less of the surrounding area, he added.
"It's just that it's too dark here, and I can't see as far as I usually do."
Jiang Wen taught him how to turn on the light, and the powerful beam instantly illuminated the dark underground.
This industrial-grade searchlight was truly bright, illuminating the underground like a small sun.
Although it consumes electricity and has a short lifespan, these are all acceptable to Jiang Wen.
After all, he prepared quite a few lights, at least seventy, eighty, or ninety.
If he runs out, he can just change another one, and he doesn't lack that little bit of money anyway.
As for why he doesn't use magic to explore, one reason is that this place obviously has a certain suppression on spiritual energy, and the continuous effect of magic may not be good.
The second reason is that he is afraid that fluctuations in mana will cause unnecessary trouble, after all, the lights do not need mana to maintain.
Magic or technology, Jiang Wen only chooses what is suitable.
Agu had naturally never seen such a bright light, and was very curious about how this small thing could be so bright.
Jiang Wen explained to him that it was filled with lightning, and Agu finally understood.
With the light, the underground environment could be seen clearly.
This is a huge cave, and unlike the sea of blood and flesh, this place is purely a rocky underground cave.
Various sharp rocks rise and fall on all sides, and the light shines on them, emitting a golden light.
The entire cave seems to be filled with gold, and the dazzling light makes people's eyes feel a little sore.
Walking along the cave, the passage becomes narrower and narrower.
There are more and more stalagmites around, and they feel cold to the touch.
Jiang Wen tried to send mana into the rocks, but he only felt that the mana seemed to enter a bottomless black hole, and he did not get any feedback.
"Could it be that the rocks here can absorb mana and spiritual energy?"
Jiang Wen couldn't help but frown as he looked at the countless rocks.
This strange feeling was rare for him.
Stones that can absorb mana would probably be rare treasures outside.
He just doesn't know whether these things can absorb spells.
If they can, wouldn't they be a treasure that could restrict cultivators?
He tried to break off a stalagmite and found that this thing was still very fragile.
The threat to cultivators may not be that great, but it is still a treasure that restrains magic cultivators.
Walking along the road, to the depths.
He heard the sound of water, about a few hundred steps away, past a steep cliff.
Along the way, white bones could be seen everywhere, all with magical artifacts beside them, sitting withered in various parts of the cave and dying.
It can be seen that these people were lost in the underground, unable to find a way out, and unable to return.
There were also traces of destruction around the remains, but they were gradually polished by the years and lost their original sharpness.
Even the rocks above their heads could be seen with holes drilled through them, but in the end, they were still unable to escape from the underground.
Because this place is too deep, Jiang Wen did not know how deep it was when he fell from above.
However, he was still careful and marked the original place with a glow stick.
Along the way, he left marks with glow sticks and fluorescent pens.
This way, even if there is no light, they can still find their way back according to the fluorescence.
This can also be considered a place where magic cannot reach, and Jiang Wen has made up for it with external objects.
Walking along the waterway, they walked for another half an hour.
The road ahead was rugged and bumpy, and an ordinary person would probably have died thousands of times.
Jiang Wen and Agu walked on flat ground, and after passing through the dense caves, they finally reached a wide cave.
This cave was artificially excavated, the cave walls were neat, and murals were engraved on them.
Jiang Wen looked at it with the light, and the story on the painting was a story of a distant tribe's conquest.
The leader of the tribe believed in the divine bird and led the tribe to repel the invasion of foreign tribes.
Until one day, a thick fog struck, and the entire tribe was almost wiped out.
The tribe decided to go far away, and they came to a magnificent city.
As for the description of that magnificent city, Jiang Wen was not very familiar with the ancient writing.
After all, the writings of the various tribes in the Taicang period were different.
Jiang Wen knew several kinds, but he could not know all of them.
Just as he was about to skip these murals, Agu, who was following behind him, suddenly said, "The great City of the Holy Spirit saved the Yu Yun tribe from disaster."
"What are you talking about?" Jiang Wen asked.
"I seem to be able to recognize the words on this mural," Agu said.
"You mean you recognize the words on it?"
Jiang Wen was a little surprised, not expecting that the things under the ground would have something to do with Agu.
Out of curiosity, he asked Agu to read out the words written on the mural one by one.
"The Heavenly God is dead, He died in the betrayal of the people."
"When the Supreme God returns from the Nine Netherworlds, betrayal will eventually be punished."
...
Countless strokes formed a mythological story, telling the story of a people called the Yu Yun tribe who came to the Holy City from the disaster of the great fog, and then followed the gods.
But the gods will die, dying in the betrayal of the people of the Holy City.
The people of the Yu Yun tribe were very angry about this.
They took some of the bones of the gods and left the Holy City, burying the gods in the underground near the Nine Netherworlds.
The Yu Yun tribe prophesied that the murdered God would eventually return, and He would settle all those who betrayed Him.
With the end of all the stories, Jiang Wen also understood who built this cave.
"Yu Yun tribe? I've never heard of it before."
Jiang Wen was a little regretful, he had indeed never heard of this tribe.
The Yu Yun people buried the bones of the gods here, but looking at the empty surroundings, Jiang Wen doubted whether the story was true.
Or rather, is what the Yu Yun tribe buried really a god?
Walking along the cave, more and more passages appeared in front of the two.
Countless statues stood, those statues that looked like warriors were placed on both sides of the road.
Many metal utensils were visible everywhere, and gold and silver jewelry had become the most inconspicuous things here.
It can be seen that people have been here, and even quite a few people have come.
Some people turned into white bones and stayed here, while others found a way out and escaped.
Scattered burial objects were everywhere, and there were many instruments that Jiang Wen had seen in the Taicang period.
"So, who exactly is buried here?"
Jiang Wen was a little curious, and then they came to a huge stone gate.
