So what is the relationship between the Liu Group and this underground cave that has been destroyed for many years?

Thinking of this, Ling Feng couldn't help but feel a big head, the more he investigated about the disaster that happened in the Qingqiu community eight years ago, the more things seemed to be involved. But the important truth that can really explain everything has never been discovered. It's as if there's a layer of fog that looms over this ultimate truth.

And the more fog there is, the more difficult it is that the identities of the two people who fought to the death in the Qingqiu community eight years ago are not simple.

As the investigation deepens, I will definitely encounter more difficult situations to deal with, but my physical condition is no longer optimistic. What should I do if I encounter a strong enemy that Xiaoxiao can't solve?

"Alas... What a headache..."

Ling Feng, who was disturbed by the annoyance, sighed heavily and inserted his finger into his hair.

From the memories obtained from the soul fragments of the humanoid skeleton and zero beast, it can be known that at least one of the two people who fought to the death in the Qingqiu community back then was still alive! Their blood can transform an ordinary weed into a bloodthirsty Zero, or a dying living person into a skeleton Zero. From this alone, it can be seen that the strength of those two people must be extremely terrifying. What should I do if I run into them? Even if Ling Feng took the risk of joining forces with Xiaoxiao, would he be able to win?

What's more, Ling Feng's body has been severely eroded by the gauntlet, and if he uses his spiritual power again to overload, there is a great possibility that he will directly turn into the bloodthirsty monster in the nightmare. Maybe it will hurt Xiaoxiao in turn......

"What should I do? What to do..."

Ling Feng was a little out of breath for the huge pressure of the unknown future, and he pressed his hand tightly on his chest, as if only in this way could he slightly reduce the heaviness in his heart.

"Ling Feng, what's wrong with you? What has happened in the past month or so? Somehow, from the first time I saw you, I felt something was wrong with you. ”

Xiaoxiao, who was walking in front, suddenly turned around, and Ling Feng, who had a flashlight with enough power in his hand, couldn't open his eyes a little.

"It's probably the after-effects of the last battle with the Nine-Tailed Zero Fox...... After that time, some injuries have remained and are not healed. ”

Hearing this, Ling Feng immediately came back to his senses and blocked the dazzling light with his hand in front of him. Then he rolled his eyes and came up with a reason to prevaricate.

"That's ......"

Xiaoxiao frowned, pondering, and continued for a moment: "Indeed, the Nine-Tailed Zero Fox I also heard the older old man mention it when I was in the Spirit Domain, and it really caused great trouble to the Spirit Domain a thousand years ago. I didn't expect you to be able to solve it, it seems that you have really improved a lot in the past two months. ”

After sighing, Xiaoxiao seemed to have opened the conversation, and she kept scanning the surrounding stone walls with the beam of light from the flashlight, "I think I may need to change my plan." Wait, let's try to get it out of here, otherwise I'm afraid something will happen. After all, I hadn't fought it with all my might before, and I think it probably had something it hadn't shown. And the dark environment here is its home turf, and we don't have an advantage here. If it doesn't work out this time, it may not be good to catch it again. Judging from the fact that it didn't leave the cave when it saw sunlight, the bat monster must have been extremely cautious. ”

"Well, let's see if we can get it out of this underground cavern. If you can't, think of something else. ”

Ling Feng nodded in agreement, and in the process of nodding, he subconsciously glanced at the monitor on his wrist, and found that it was still green, and breathed a sigh of relief. The terrible ending after being eroded by the gauntlet can't be staged in reality.

"But what the hell is going on here......"

Finally prevaricating Xiaoxiao, Ling Feng took a deep breath to clear the heavy thoughts in his mind. He grabbed the flashlight that Xiaoxiao gave him and shone it back in front of him. His eyes swept around, and he began to carefully examine his surroundings. At this time, they were walking in a narrow road. In front of the light, the walls of the corridor gradually become smooth and flat, and at a glance, you can tell that they have been carved with tools. As they went deeper, the narrow corridor suddenly widened, and after passing a corner, a huge metal door that was three meters high appeared in front of Ling Feng and Xiaoxiao.

In the underground cavern, there was not the slightest sign of corrosion on the metal door that had not seen the light of day for a long time. However, due to the dampness of the ground, a thick layer of green moss was attached to the metal door. However, these were not the places that attracted Ling Feng's gaze. What really caught his attention was the middle of the metal door, where there was a man's fist print. It's just that this fist mark looks surprisingly big! The fist prints on the metal door are the size of a washbasin! This is by no means something that a normal person can play. There is no doubt that the destruction of the experimental base in the underground cave must be inseparable from the owner of this fist seal.

"This is who stayed..."

Ling Feng immediately crouched down and gently rubbed the fist mark on the metal door with his hand. I want to find some key clues.

"Don't try, let's go. I didn't pay attention to this place at first, but then I stumbled upon it, so I investigated it carefully. But nothing was found, and the only thing I can be sure of is that this metal door is made of a particularly hard alloy. Anyway, my all-out punch will definitely not leave any traces on it. From this, I deduced that the owner of this fist seal must be very strong. ”

These words fell into his ears, and Ling Feng raised his head to find that Xiaoxiao was standing in front of him at this time, looking sideways at him.

Seeing that Ling Feng hadn't followed yet, Xiaoxiao continued: "Let's go, don't look at the things here yet, I suspect that guy is watching us in the dark." If it encounters any good opportunity, it will definitely rush out and attack us. In the dark, it's really hard to guard against. ”

Ling Feng nodded and stood up, just as he was about to approach Xiaoxiao. Ling Feng suddenly felt a trace of murderous intent emerge from the dark cave behind him. Before he could react, a dark shadow suddenly burst out of the area illuminated by two powerful flashlights.

"Be careful! It's going to do it first! ”

Ling Feng didn't react, but Xiaoxiao, who had already dealt with this guy many times, did. I saw her little hand with the ice crystal glove clenched into a fist, and then the ice crystal glove suddenly emitted a dark blue light. Within three hundred meters of Xiaoxiao and Ling Feng as the center, the temperature in the underground cave dropped suddenly.