The rat cave is complex like a labyrinth, and although Liu Fei's method is practical, it is useless in such a huge labyrinth. In the end, he didn't know where he was! for there is his mark all around.

Liu Fei, who was too lazy to look for any longer, simply didn't try again, and the green light popped out from his fingertips to kill the little mouse that was still at his feet.

I don't know how long it took for Liu Fei to feel empty around him. He had killed at least 10,000 little rats just now.

The ground was littered with rat corpses, and the pungent smell of blood filled the long corridor. Suddenly, a big rat ran over from the darkness and opened its mouth to bite Liu Fei's waist.

'Finally can't help it?' Liu Fei sneered in his heart, all creatures have the instinct to protect the young, and the rats are naturally the same, killing so many small mice, which can be said to have caused a lot of casualties to this rat group.

With both hands clenched into fists, a fist slammed into the giant rat's head, and the giant rat's head immediately exploded. Liu Fei took a few steps back, dodging the filth of the giant rat. Looking around, there were already a lot of giant rats gathered here.

These giant rats are the size of calves, and their strength should be intermediate. It can be described as a high-end force in the rat group, and the giant rat that Liu Fei chased just now should be the rat king.

Liu Fei stimulated the qi all over his body, and the blue light covered his whole body, like a warrior wearing green armor. Rushed straight towards the rats.

The giant rat the size of a calf is extremely strong, and it will be very difficult for the soldiers in Anqing City to deal with, but in front of Liu Fei, it is like a chicken and a dog, vulnerable to attack.

White light can also easily suppress intermediate or B grades, not to mention that Liu Fei uses a more advanced blue light? Any blow can blow up the giant rat, and soon, only a small half of the giant rat remains. The rest of the giant rats were not stupid, and they had the intention of retreating.

Liu Fei naturally didn't allow it, and used ten percent of his body's qi to condense a cyan ball in his hand. The energy emitted by this cyan ball was extremely terrifying, and Liu Fei himself had some feelings that he couldn't control it.

The cyan ball came out of its hand and smashed into the mouse. There was a loud bang, no less than the sound of a bomb exploding, with the cyan ball as the center, there was no giant rat within a radius of ten zhang.

Naturally, the corridor is not ten zhang wide and high, and this explosion has directly expanded the corridor several times, and the originally small space has suddenly opened up.

Surprisingly, the rat hole did not collapse under such a huge explosion. As for this, Liu Fei is still relatively lucky. If the top collapses, he will bear the brunt of the brunt, no matter how strong he is, he does not feel that he can survive under the pressure of tens of thousands of tons of earth and rock.

With such a strong power, more than half of the giant rats were directly killed, and the remaining giant rats naturally fled.

Liu Fei looked forward, and he was extremely surprised by this power. I didn't expect that ten percent of the qi in my body would be so powerful, it was like a miniature nuclear bomb.

It should have exploded into the underground river below, and the water gushed out from it from afar, and in the blink of an eye, a small half of the puddle of water was stored.

However, what caught Liu Fei's attention was that on one side, a huge hole appeared, and the towering stalactites inside could be seen. The cave on the opposite side and this side just form the shape of a gourd.

Although they were thirty meters away, Liu Fei stepped over in just one step. The cave opened up even more suddenly, and the space inside was the size of four or five football fields.

There are a lot of large and small stalactites stuck upside down on the ground, which should have been shaken down by the explosion just now.

There is also a dark river in the cave, which zigzags and zigzags and does not know where it leads. Inside this cave grows a kind of glowing moss, although the light is very faint, but in this dark world forms a neon belt, which is very beautiful.

Just when Liu Fei was amazed by the magic of nature, a huge mouse pressed down from a height. Liu Fei reacted quickly and rolled to avoid the giant rat.

When I got up and looked closely, it was the rat king. The eyes glowing green in the dark stared at Liu Fei, and the saliva in his mouth hung on his mouth, completely lacking the timid appearance just now.

As soon as the Rat King landed, he rushed towards Liu Fei again. The huge body and the extreme speed are like a tank.

The hard-hitting method was naturally not advisable, and Liu Fei jumped onto a huge stalactite.

As soon as the giant rat turned around, he jumped on the stalactite almost at the same time as Liu Fei. Liu Fei's legs shook, and the huge stalactites under his feet exploded instantly, and his whole person jumped dozens of meters away.

The giant rat didn't have time to jump away, and its limbs fell into the air. The huge body smashed to the ground, and the cave seemed to tremble.

Before it could stand up, Liu Fei jumped up. The sweep kicks a vertically descending stalactite, and the tip of the stone flies in the direction of the giant rat.

The giant rat stood up and let out a high-pitched roar. The cave was really trembling this time, and the high-decibel sound made the fragile stalactites above the head fall one after another, like a stalagmite rain.

Liu Fei dodged left and right to avoid without embarrassment, but the giant rat rushed towards Liu Fei with ease with its flexible body.

By the time the stone rain was over, the giant rat had already arrived in front of him. However, Liu Fei was not in a hurry, and dozens of green mangs hit the giant rat with a flick of his fingers.

When the giant rat dodged the green mang, he stepped forward, and once again condensed a cyan ball in his hand, which was imprinted on the giant body of the giant rat.

"Bang!"

Liu Fei's body flew out upside down and slammed heavily on the stone wall, spilling bloody arrows on the ground in his mouth.

When he turned his hand, the hand he used to use the cyan ball was already charred black, and if it wasn't for the critical moment when he used the cyan light to protect his hand, I am afraid that this hand would have been like the giant mouse.

Although Liu Fei only used five percent of the qi this time, the power was still very great. The stumps of the giant rat flew wildly, and it was impossible to distinguish the head from the limbs, and there was a big pit left in place. It wasn't as terrifying as the explosion just now, maybe because the giant rat used the white light in its body to resist it.

Liu Fei felt very uncomfortable in his body, and his internal organs seemed to roll around, and then became entangled.

After mobilizing the qi to run around his body for a few turns, Liu Fei felt better, and his complexion was much more ruddy.

Liu Fei looked around, this originally ghostly cave has now changed its appearance, only a few stalagmites are left hanging on the stalactites above his head, and there are countless gravels on the ground, as well as blood and flesh and mud.

Just as Liu Fei was breathing, a black shadow fell from the sky, picked up a piece of meat foam on the ground and flew up the rock wall again.

Liu Fei opened his eyes and looked! But it's a palm-sized black bat.

Liu Fei wanted to close his eyes, but his eyes suddenly widened because he found that there was a trace of qi in the bat's body.

There is very little qi, and a few meridians the thickness of a hair support their flow. However, the existence of qi gave Liu Fei a lot of doubts.

Gas! Generally, only high-level fierce beasts or Grade A powerhouses can control it, and it is undoubtedly a symbol of strength, because it contains unparalleled power.

But when this kind of thing appeared on a bat the size of a palm and obviously had no attack power, the situation was a little weird.

Isn't Qi the preserve of the strong? When will it appear in a little one? Isn't there a relationship between qi and physical strength?

With doubts, Liu Fei jumped up from the ground and reached out to grab the bat.

However, the bat reacted quickly, and escaped the moment Liu Fei grabbed it. It's like some people shoot mosquitoes, obviously close at hand, but when they shoot and then turn their hands to look, they don't see the mosquito corpse.

The bat was pitch black, and it blended into the surroundings in the blink of an eye, and Liu Fei could only see where it was by relying on the qi in its body.

Can a small bat escape Liu Fei's clutches? Liu Fei stepped forward again, this time faster.

However, the bat is faster, and its ears catch the sound when Liu Fei has just made a move, which makes it always one step ahead of Liu Fei.

The speed at which sound travels in the air is 340 meters per second, and Liu Fei's fastest is only 150 meters per second, which is enough for a small bat to react in half the time.

The little bat also realized the danger and burrowed into a rock crevice.

Liu Fei immediately went up and looked into the rock crevice, but found it! There is a cave behind the crevice, and there are huge boulders on both sides of this crevice. If these two boulders were removed, it would be a straight avenue that stretched to a place that Liu Fei couldn't see clearly.

Anyway, Liu Fei can't find an exit now, and the little bat may have come from the opposite side, and there may not be an exit over there.

Liu Fei made up his mind to blast out a passage!