Gu Xiaoyun and Gu Xiaofeng, the two of them were walking in the sewer with flashlights.

But suddenly, the two stopped tacitly.

"Knock knock."

In the dim sewers, there seemed to be another voice besides the two of them.

This one sounded a bit dull.

It seems to be a human being walking, and it seems to be some giant animal moving around.

But when they stopped, they waited for a moment, and the sound was gone.

The two brothers looked at each other, their hearts full of vigilance.

Whether this thing is a human being, an animal, or something else, since he can stay in this sewer, it can show that he is not simple.

They quietly gathered their abilities and moved forward silently.

Whether it is Gu Xiaoyun or Gu Xiaofeng.

They were able to make sure that they didn't make any noise during their actions.

But the strange thing is that the voice actually sounded again.

"Knock knock."

This time, I could hear that this voice was much closer to them.

Tacitly stopped, but I didn't expect this voice to stop again.

Gu Xiaofeng frowned, it was obvious that his patience was not high for this kind of pretending to be a ghost.

But the two didn't speak, their bodies were closer, and their expressions were the same.

Gu Xiaoyun silently put his hand on the cold light in his hand.

As for his brother, he also touched the feather fan on his waist silently.

This feather fan is the same as the cold light, their family's ancestral treasure.

Their hands touched the weapon, and this time the two men didn't stop, their speed getting faster and faster.

There was only one thought in the hearts of the two, which was to find out this little mouse hiding in the shadows.

"Knock knock."

As their speed changed, the rhythm of this dull sound became faster and faster.

It seems that just like them, they have also picked up the pace.

The distance between them was getting shorter, and the muffled voices were getting clearer.

Just as Gu Xiaoyun and Gu Xiaofeng walked around a corner in front of them, their voices stopped abruptly.

The two of them immediately stopped.

Quiet.

What appeared in front of them was Gu Xiaoyun's old friend.

A mutated rat.

No wonder this sewer is so quiet, it turns out that all the other rats have been killed by this big guy.

This mutated rat almost pierced the sewer, with sharp teeth, strong muscles, scarlet eyes, and constant drooling.

The whole rat looks a little less intelligent.

Gu Xiaoyun smiled: "I thought it was something, it turned out to be this thing."

"This mutant rat is here to add vegetables to us, and his skin is still intact, which is kind of interesting."

"Is this to be left for us to go outside and roast it whole and eat it?"

Gu Xiaofeng's eyes were faint, and he looked at the huge mutant mouse in front of him.

After Gu Xiaoyun and the others came back, they had more or less heard of the mutant rat and the mutant rat king.

The size of the body in front of him is so huge, it looks like the mutant rat king.

I heard that the meat of this mutant rat king is extremely delicious, and the most important thing is that the energy he replenishes should be much more than that of the mutant earthworm.

The additional meal that Gu Xiaoyun said was not unreasonable.

With his scarlet eyes, the mutant rat king looked at the two little Karami opposite.

For such a human, he has eaten a lot.

It's just that the two humans in front of them, the energy contained in their bodies is very huge

Big.

He couldn't help but want to get closer.

"Squeak——!

A sharp cry came, and the mutant rat king couldn't help but rush over first.

Gu Xiaoyun crooked his lips and smiled: "Here, my dear brother, whoever kills this prey first will be the one."

"Your abilities may not be faster than mine."

Gu Xiaoyun's words floated in the air, and his whole person had already shot out.

In the blink of an eye, it floated to the face of the mutant rat king.

The mutant rat king opened its bloody mouth, saliva flying among its sharp teeth.

This mouthful rushed towards Gu Xiaofeng fiercely, obviously biting him to death directly.

Gu Xiaofeng backhanded out the feather fan hanging on his waist, and between the lightning and flint, the incomparably white feather fan opened instantly.

A few feathers flew out lightly.

The white feathers, compared to the sharp teeth of the mutant rat king, are simply lethal.

The mutant rat king didn't look at these feathers at all, he directly ignored something that hit his teeth, and he was about to bite Gu Xiaofeng's body.

At the moment when the mutant rat king turned yellow, cut his fishy teeth, and came into contact with the white feathers.

There was a sound of metal intertwining.

"Click!"

At the moment of collision, sparks burst out.

The incomparably strong teeth were actually punched out by these light feathers.

Gu Xiaofeng's movements did not stop, a fresh breeze blew, and his whole person instantly appeared on the back of the neck of the mutant rat king.

The feather fan in his hand turned into a sharp blade.

He suddenly raised his hand and swung out a cyan wind blade, slashing at the mutant rat king.

The back of the neck of the mutant rat king was actually cut out of a large piece of flesh by this wind blade.

He let out a miserable scream, clearly feeling the pain.

Gu Xiaoyun blinked his eyes, he didn't expect his brother's wind ability to be so fast, compared to him, a veteran 10 years after the end of the world, it seemed to be on par.

And seeing his brother like this, he is quite at ease, and he doesn't need to interfere for the time being.

So he simply folded his arms and watched from the sidelines, giving his brother a chance to hone and hone his skills.

He walked to the surrounding wall, stood against it, and waved at his brother.

"My dear brother, I'm optimistic about you, come on!"

When Gu Xiaofeng heard his words, he glanced at it casually, and it was okay to see that it was okay, but at a glance, he found that his brother was paddling.

As steady as he was, he couldn't help but roll his eyes.

"I'm going to work for you in the dungeon, and now I'm going to work for you when I'm out?"

"*** live, are you watching a play?"

Although his mouth was obviously very dissatisfied, his movements were not slow at all.

After the mutant rat king was in pain, he suddenly turned around.

Gu Xiaofeng died and didn't fight him head-on, he originally wanted to scrap his teeth, but now it seems a little difficult.

As long as he keeps backstabbing him in the back, what can this mutant rat do to him?

Gu Xiaofeng reappeared behind the mutant rat king, and with a wave of his hand, several cyan wind blades instantly appeared.

The cyan wind blades stacked in the air, and several wind blades recombined into one, heading straight for the wound that had just been broken.