In the cave space, Yi Chen was also meditating to restore the true yuan in his body, but because he had the Blazing Insight Pill in his hand, the true yuan in his body did not consume much along the way, at least half an hour ago, he only consumed less than three layers.

Since entering the air wall, because of the existence of the fiery fire poison, the deeper they go, the thinner the heaven and earth aura in the surrounding space becomes, and in their current position, the existence of a trace of aura can no longer be felt in the space at all.

Therefore, if these people want to quickly restore the true qi and true yuan in their bodies, there is only one way in front of them, and that is to rely on the spiritual energy in the elixir to recover.

The elixir is a very important cultivation resource for every cultivator, especially for cultivators who are active in the Starfall Land, the two types of elixirs that restore true qi, true yuan, and heal injuries are the most important for them.

After all, no one knows for sure when the next battle will be, what kind of injuries the battle will bring to them, and no one knows how long they will fight.

Yi Chen himself is a first-order alchemist, and he has already planned before entering here, so among the pills he brought on this trip, there is naturally no need to say much about pills such as healing injuries, and recovery pills are even more important, so naturally he will not bring less.

And because he has a master of the pill who is like a sister and shaped like a master, the quality of every pill he refines is extremely high, it can be said that it is the best quality accumulated in the past few years, and it is the best of the first-order pill products.

Therefore, his recovery speed was very fast, and while the others were still adjusting the medicinal effects of the refining pill, he had fully recovered to his full state.

During this period, in order to prevent the excess aura from leaking out and attracting the attention of others, he also used the excess medicinal effects and aura for cultivation by the way, and now his cultivation has improved a lot, and he is not far from the realm of Qingdan.

At the moment, everyone was recovering from pranayama, Yi Chen didn't show it too obviously, and the cloak that hid his body shape became his best help again, and he began to groan and ponder to analyze the current situation.

Half an hour ago, the invisible gate began to urge them to speed up their progress for some reason, and even in order to make everyone obey their dispatch, they did not hesitate to give everyone a recovery pill, and Liu Hong made a promise in the end that everyone could leave alive.

Of course, none of them believed in the credibility of this promise, because everyone knew that they had to survive it until Liu Hong fulfilled his promise.

Maybe to put it another way, this promise needs to be based on the premise that they can survive, but from Liu Hong's sworn and indifferent expression, they felt an inexplicable chill in their hearts, and another fearful guess couldn't help but appear in their minds.

However, in the comparison between Liu Hong's strong coercion and the danger that has never appeared here, they have no other choice but to endure the anger in their hearts and temporarily obey Liu Hong's orders, because only in this way can they obtain the most advantageous advantage without knowing it.

Because of this, after half an hour of difficult perseverance, they finally came to this space, and they also began to meditate under Liu Hong's threat, recovering their true qi and true yuan as soon as possible.

And after coming here, Liu Hong also made a great deed, and did not force these loose cultivators who did not know the situation to go outside to guard, but deliberately arranged for his subordinates to take turns to be responsible for guarding, and it was precisely because of this that there was a scene of the previous shift change.

Why Liu Hong is like this, no one among these scattered cultivators knows, and even Yi Chen, who knows some information about this place, is confused, and he can't think of what reason would make Liu Hong make such a judgment.

The only thing that comes to mind is to make the best use of it, so that these casual cultivators can continue to be a possibility to explore the way for the dead ghosts.

Of course, there is actually a guess closer to the truth in Yi Chen's heart.

After all, although the information here is not very detailed, it is enough for Yichen to analyze the current situation.

Moreover, Liu Hong's subordinates did not act in any other way to cover up their conversations, and perhaps in their opinion, there was no problem for these words to be heard by these loose cultivators, because the dead would not tell any secrets.

All the developments of things are under their control at the moment, so there is nothing wrong with this kind of thinking, which also gives Yi Chen a chance, combined with their few words, they can probably draw a conclusion.

From the words of these people, Yi Chen knew that this underground space was not actually used for rest, but a temporary station established by the Invisible Gate a year ago, and it was a defense line established to defend against some kind of existence deep underground.

As for what kind of existence it is, they don't say in detail, the only thing they know is that this existence can only survive below the air wall, and once it is out of it, it will be difficult to survive.

And every now and then, they can lower their voices, or even silence them altogether.

Even so, Yi Chen's gaze hidden under the cloak was clearly aware of the fear that came out of their tones, and the fear that manifested on their faces.

Thinking about it, how can the existence of the two forces establish a line of defense, how can it be a simple role?

However, what made Yi Chen even more frightened was the few whispers that these people talked about later.

A year ago, the wall of air they had stepped into during the day was not actually above, but hundreds of meters below the space.

There has been no change until a year ago, when Wu Xing and Fei Ran, two powerhouses of the Sky Realm, ventured into the depths of the underground together, and finally came out with injuries, this wall of air began to rise gradually, and even the distance of the rise changed every day, so that it rose thousands of meters in just one year, reaching a height of only a few hundred meters above the ground.

And the most direct impact of this change is that the deployment of the two forces began to move from the underground to the top, and finally completely evacuated from the depths of the underground.

Due to the change in the position of the air wall, the kind of beings who have always lived in it continue to break through their defenses, and after the heavy price paid by the two forces, they can now only stop it at the edge of the crater.

As for what happened deep underground a year ago, what Wu Xiang and Fei Ran experienced during their time, and how the injuries on their bodies came from, they all knew nothing.

The only thing that is certain is that since that day, some unknown change has occurred deep underground because of the entry of the two.

All the things that have been said here can also explain why there are so many traces of battle along the way, and I am afraid that these are all left by the battle of a year.

It's just that after solving this question, more doubts followed, not to mention what kind of existence would be born in this environment, and no matter what the strength of this existence was, the behavior of Wu Xiang and Fei Ran a year ago alone was full of countless mysteries.

A year earlier, the two had been forced into retreat due to injuries sustained in battle, as rumors circulated at the time and later on the battlefield confirmed this.

However, at this time, from the discussion of these people in the invisible gate, this is not the case, but Wu Xiang and Fei Ran actually went into the depths of the underground together, and then came out after being seriously injured.

You must know that the two major forces of the Invisible Gate and Qingyanlou seem to get along very well in the current Starfall City, and there is not much friction and fighting.

But there is one thing that cannot be changed, that is, since the catastrophe occurred five years ago, the forces established by the two have a heart for each other, and there are two years of grudges, and there is no possibility for the two to let go of the murderous intent towards each other in their hearts.

There are so many unknown mysteries that it is impossible to find the correct answer with the current intelligence alone.

Perhaps only by going deep into the ground, finding the traces left by Wu Xing and Fei Ran, and following these traces, can we clear the layers of fog in front of you and see the truth of the matter.