When Gu Yi opened his eyes, he silently felt his current strength, and nodded with satisfaction, although he is only in the realm of the Earth Tribulation Tribulation now, but even the ordinary masters of the Earth Demon Tribulation Tribulation are not his opponents, this is still not the strength of the physical body, this is already very strong.

"Big brother, you are really powerful, and now even I feel a faint threat in you. When Gu Yi was feeling his strength, Xiao Du didn't know when he came to Gu Yi's side and said excitedly.

Hearing Xiao Du say this, Gu Yi was even more satisfied, the current Xiao Du is the real existence of the Four Tribulations, even Xiao Du said that he felt threatened, so his current strength should be good.

Zai nodded with satisfaction, and said to Xiao Du, "Xiao Du, how is your injury now?"

"Big brother, this 10,000-year-old ice essence is really a good thing, I only took a small half drop, not only my injuries have completely recovered, but even my strength has improved a lot. Hearing the eldest brother mention his injury, Xiao Du suddenly became excited, and talked endlessly about the wonder of this 10,000-year-old cold earth essence.

Gu Yi had taken this 10,000-year-old Ice Land Essence himself, so he naturally knew the metamorphosis of this Cold Ice Land Ru, so there was no fuss.

Immediately, Gu Yi and Xiao Du set their eyes on the deep tunnel, they knew that the next level was behind the tunnel, but what existed in the next level, Gu Yi and Xiao Du could be said to know nothing.

But even if they don't know anything, Gu Yi and Xiao Du will go on without hesitation, the benefits brought by the first three levels to Gu Yi and Xiao Du are simply indescribable, so what about the fourth level? Will there be something better? Can it bring greater benefits to himself and Xiao Du?

is saying that now he and Xiaodu are really powerful, even if they encounter some dangers, they and Xiaodu are confident to survive the past.

So Gu Yi and Xiao Du took a deep breath and walked into the tunnel without hesitation.

The moment they entered the tunnel, Gu Yi and Xiao Du only felt that the world was spinning for a while, but Gu Yi and Xiao Du were not surprised, because such an experience had already been experienced three times in the first three levels.

Sure enough, it didn't take long for Gu Yi and Xiao Du to return to normal, and at the same time, a light that was not strong was imprinted into Gu Yi and Xiao Du's eyes, which made Gu Yi and Xiao Du a little uncomfortable for a while, and stretched out their hands to block the strong light.

After getting used to this kind of strong light, Gu Yi and Xiao Du had time to slowly look at this space, a faint breath of life filled this space, and as far as the eye could see, an endless plain appeared in front of Gu Yi and Xiao Du, on this plain, Gu Yi and Xiao Du did not find any living animals, not even a grasshopper.

But this space is full of a faint breath of life, which makes people want to let go of their hands, open their hearts, and immerse themselves in the embrace of nature.

Even Gu Yi's firm will, when he first saw this space, he almost couldn't help but want to return to the embrace of nature, completely plunge into this nature, and enjoy it, but fortunately, Gu Yi and Xiao Du are both strong-willed people, and they quickly got rid of that desire.

At the same time, what shocked Gu Yi and Xiao Du even more was that they just felt this strong breath of life, and they only lightly absorbed a little, but in this way, Gu Yi and Xiao Du both felt that the breath of life in their bodies was even stronger, and some injuries that were not seen by themselves were completely improved.

Gu Yi and Xiao Du both gasped one after another, this is just to smell this strong breath of life and only absorb a little bit, can have such benefits, so what if they have been living in such an environment? What kind of benefits will be obtained in such an environment all day long, this is self-evident.

It is precisely because of this that Gu Yi and Xiao Du are really shocked, and they have to pay attention to it, there is no way, until now, I have not seen the guardian of this level, but I and Xiao Du almost fell into it directly, which makes Gu Yi and Xiao Du have to fight up twelve points of spirit.

While carefully observing the guardian hidden in the shadows, you must also be vigilant enough not to absorb too much of the breath of life in the air.

Although the breath of life in this air is quite strong, even if he and Xiao Du absorb the endless benefits, they have not found the disadvantages of life, but they have not found the disadvantages, it does not mean that there are no disadvantages, he and Xiao Du are here to explore this ruins, they are here to break through, Gu Yi does not believe that the owner of this space can be kind enough to give himself and others the benefits in vain.

Therefore, before knowing whether the breath of life permeating this space was harmful to himself and Xiao Du, Gu Yi and Xiao Du did not dare to absorb it with confidence.

After holding their breath, Gu Yi and Xiao Du unfolded their speed and kept running towards the depths of the grassland, they wanted to see if this grassland was really as boundless as it appeared.

But what shocked Gu Yi and Xiao Du was that at their current speed, although they were not rushing with all their might, the speed was not very slow, at least compared to the general masters of the Three Tribulations, they were rushing with all their might, but that's it, after two hours, Gu Yi and Xiao Du hadn't seen the end of the grassland's forehead.

Looking back, it was an endless grassland, and looking ahead, it was also an endless grassland, but now it can be said that there is an endless grassland in all directions, and after so much time, Gu Yi and Xiao Du also found that even if they and Xiao Du held their breath for two hours without breathing, they did not feel the slightest discomfort.

But what shocked Gu Yi and Xiao Du was that even if they closed their breath, the breath of life in this space also entered their bodies from their pores, Gu Yi and Xiao Du didn't find it at first, but time has passed so long that even ordinary people can find out, let alone masters like Gu Yi and Xiao Du?

A more direct point is that in the two hours, although Gu Yi and Xiao Du are not in full force, they will also consume the true yuan and demon yuan, but after two hours, he and Xiao Du are not the slightest tired, and they are even in a state of struggle, from this point it can be seen that this breath of life is entering his and Xiao Du's bodies all the time.