This place is a huge spherical underground cavern, the upper half of the dome and the bottom half of the pit are interlocked in the shape of a bowl, the thickness of the soul crystal here has reached an immeasurable level, and the surface seems to have been washed away by some force for many years, making the four walls smooth as a mirror.

It's just that the lower part of the pit wall is slightly yellow, and the closer you get to the central spring, the darker the color becomes, because the tumbling cold spring itself is extremely yellow, which reflects the surrounding area with a similar color.

In addition, there is the extremely cold aura that emanates from it, even if Xiao Youran has a Dao body, he still can't help but shiver from the cold, of course, he is only at the outermost edge of the entire hole, and it is even colder inside, if he accidentally stumbles and falls into the cold spring at the bottom of the pit, he doesn't think that he can come out alive.

After carefully observing this cold spring cave, Xiao Youran found that in addition to the entrance of the cave when he entered, there was only a narrow platform protruding from the cave wall at the upper and lower dividing line, which surrounded the cave for a circle, as if to allow people to fully appreciate the cold spring from all sides, and the specially built plank road was general, but that's all, there was no other exit.

"Can't ......"

The ugly smile leisurely looked around again, and even looked up to check the roof of the cave carefully, and only after finding that there were indeed no other holes, did he wail in extreme depression.

I didn't expect to go around and around, it took so much effort to come here, and the physically and mentally exhausted smile leisurely only found that he just got into a "crystal ball" from a "bottle"?!

Knowing that this is better than honestly figuring out a way in the original place, how to say that the bottle at least has a "bottle mouth", even if the bottle wall is also smooth, but at least they can make holes and climb up, but this ball is sealed, there is nowhere to climb, is it difficult to go back the same way?

Although a little frustrated, but Xiao Youran did not leave this place immediately, anyway, it has already come, simply walk along the plank road first, just as a tour to watch, by the way to see if there are any weak points in the four circles of the cave wall, or hidden secret passages and the like, even if you find nothing, at least it is not a trip in vain.

With such a mentality, Xiao leisurely put his hands back, swept away the decadence, and walked along the plank road with a smile, as if the people who had played here were savoring the natural wonders, sometimes nodding, sighing, sometimes knocking on the crystal wall, stomping on the plank road, a leisurely and complacent appearance.

Not to mention that he walked like this, he really found something, when he walked to a quarter of the plank road, he found a stone tablet inlaid on the crystal wall, the tablet surface and the cave wall are flat, the tablet body does not know what material it is, it is neither smooth, nor reflective, and its own color is similar to the soul crystal, if it is not close, it is really not seen in the distance!

Look at the stele again, the upper part is only "Huangquan" two dark gray huge ancient characters, the lower half has a simple introduction to the ancient character inscription, perhaps the age of the monument is too old, the big characters on the top are better, the lower inscription has been a little weathered and worn, the handwriting is very light, and the "knowledge" with a smile is only barely recognized.

"Yellow Spring, the Nine Shades of the Earth Realm, that is, one of the Nine Springs, is in the east and leaves, the spring gushes with cold flames, devouring the soul of the gods, all day long, the Yuan Shen can also be burned, if you want to enter the underworld through this seclusion, you must refine the Yuan Shen to ......"

Reading this, the inscription behind it has been completely blurred, and Xiao Youran almost put his face on the tablet, but it is still difficult to distinguish its exact content, and he can't help but cry out for disappointment.

"It seems that if you fall into it, you can't even run out of the original god, this is really ...... Uh~!"

Thinking of this, Xiao Youran couldn't help but shudder in fright, there was no text left and right, and he no longer bothered to identify,

"Can this primordial spirit still be refined?"

While muttering and continuing along the plank road, he smiled leisurely and recalled the inscription, although the words of refining the Yuan Shen would feel extremely absurd to anyone, just like he was constantly shaking his head at the moment, but for some reason, there was an inexplicable sense of identity in the depths of his heart.

"I'll drop a good girl~!"

Xiao Youran, who had walked directly opposite the entrance to the cave, couldn't help but be curious, took out a half-eaten roast goose and threw it to the bottom of the pit, but as a result, the roast goose just flew out not far away, and was sensed by the yellow spring, shooting out a wisp of cold flame and instantly burning into nothingness, so frightened that he exclaimed, and couldn't help but lean his body inside, and it was almost attached to the cave wall.

This plank road seems to be flat and stable, but in fact it is also built by soul crystals, although it is not as smooth as the surrounding crystal walls, but it is not very rough, it is easy to slip to it accidentally, and there is no guardrail at the edge.

Some trembling and walking a quarter again, in the Huangquan inscription stele directly opposite the position, smiled leisurely found that the cave wall was inlaid with an identical stele, and the text on this stele is very simple, the whole stele has only a strange big "prison" word!

"What does that mean?"

Looking at the big characters on the stone tablet, Xiao Youran scratched his head with doubts, what does this "prison" represent, hell? But isn't hell in the underworld? What kind of prison is this?

Looking around, Xiao Youran didn't find any entrances or exits other than this stone tablet, maybe this meant something else, but he didn't have time to think about it now, and walked forward until he returned to the entrance of the cave where he had first entered.

After investigating all the way, this place is the same as I imagined, there is no other exit at all, although I have been mentally prepared, Xiao Youran is still a little depressed, but although there is no exit, but the Xuan Qi is relatively sufficient, in this case, you might as well practice here for a while to try it, and see how fast the cultivation is improved.

Xiao leisurely thought about it and then returned to the front of the prison word stele, sat down in front of it, and began to use the secret to absorb the Xuan Qi, not that there was anything special about this place, but he was still very curious about the meaning of this word, and wanted to guess and analyze it while cultivating.

Time passed, with the support of natural Xuan Qi, the speed of the operation of the Secret Determination was much faster than when it relied on medicinal power to breed, and it was smoother, a few big Zhou days passed, Xiao Youran felt that his cultivation at the peak of the Yellow Rank seemed to have improved a little, and there was a faint feeling of touching the Xuan Rank barrier.

"Prison ...... Death...... Prison... Death...... Huangquan Prison?!"

And while he felt the change in his cultivation, his eyes looked at the word prison without blinking, until when he muttered the words "Huangquan Prison", he suddenly felt that his vision was hazy, and the words seemed to have disappeared suddenly, and a vague figure appeared looming on the tablet, as if beckoning to himself?!

Laughing in a trance, he heard that the figure seemed to make some kind of sound similar to summoning, and subconsciously got up and walked to the stele, slowly raised a hand to touch it, and when his fingertips touched the stele, the original dark gray prison word suddenly bloomed with a dazzling yellow light, and his person disappeared out of thin air with the yellow light......

"Who dares to trespass into hell?!"

A cold drink containing anger startled the trance-like smile, and suddenly woke up to find that he had come to a cold and dark underground prison at some point, and at this time two men in Yin soldier clothes were standing opposite him with hook knives, and the voice was the tall and thin man on the left.

"What, hell?!, isn't this the Yellow Springs Prison?"

The smile that had just cleared up was leisurely and a little confused.

"Don't pretend to be stupid there! Isn't Huangquan Prison hell?say~!Who are you, and how did you get in?"

The thin and tall Yin soldier glared at him, and asked coldly, Xiao Youran's brain was already a little messy, and he was even more stunned when he asked, the Yin soldier saw this, and immediately became angry, and took out a soul chain and was about to step forward to make a move, but was stopped by his companion next to him.

"Wait, you see he's wearing a yin uniform, and that waist card ......"

It was a wide-fronted and narrow-faced yin soldier who was patrolling with the thin and tall yin soldier, and following the direction of his finger, the thin and tall yin soldier vaguely saw that this gray-headed and earth-faced guy who came out of nowhere actually hung a nine-star yin difference waist card?!

"What kind of brigade are you doing?"

After seeing the waist card, the tone of the thin and tall Yin soldier was obviously much softened, but it was still extremely serious, and he was not allowed to answer.

"Laughing brother?!"

At this time, someone suddenly wondered.