This gray area is also the gathering place of those shady trading places, and Zhao Xin bought a small shop here, and built a large prison under this small shop, that is, an underground city.

The dark corridor seems to have no end in sight, and the winding corridors give people walking inside the illusion that they are being devoured by a black python.

"Roaring ......"

Before the end of the corridor, Zhao Xin stopped, stretched out his hand to open an iron door beside him, and a fishy air flow came to his face. Behind the iron door was a huge room, and in the center of the room, a three-meter-tall black dog-like beast was staring at Zhao Xin viciously.

Seeing the mastiff with its mane standing up like silver needles at this time, he couldn't help frowning, because he had never seen this mastiff like this, even when he subdued it and imprisoned it in this underground city, he had never been so irritable.

When Zhao Xin entered the room, the lights in the room suddenly turned on, and the iron door also closed.

"Roaring ......"

Just as Zhao Xin wondered why, the mastiff opened its bloody mouth and roared towards Zhao Xin, and the mastiff's body turned into a black shadow in midair.

"Drink ......"

Zhao Xin raised his hands, power burst out from his body, and the loose coat was windless.

Bang......

A puff of black smoke rolled up under Zhao Xin's body, and the mastiff's huge body pressed against Zhao Xin's body.

The black smoke dissipated, and I saw the green tendons of Zhao Xin's hands burst out, and they collided with the mastiff's two front paws, which seemed to stop the mastiff's whistling paws.

At this time, a golden light flashed from Zhao Xin's eyes, and if a careful person was here, he would definitely find that Zhao Xin's eyes had turned golden.

Feeling the power of the mastiff, Zhao Xin couldn't help but brow heavier, the power in his body exploded, his left hand let go of one of the mastiff's front paws and turned to his right hand, and with a force on his waist, he threw out the mastiff's body with a thousand catties.

Rumble......

The mastiff's body slammed into the ground with a loud bang and rolled up a cloud of dust in its place.

"The strength of this mastiff has become stronger"

Zhao Xin clenched his hands that were a little numb, and his heart began to ripple.

First of all, why has this mastiff's strength become stronger, you must know that he himself comes here once a day to check the situation of the descendants of the ancient beasts he has caught. And how this mastiff went out without alarming himself.

Finally, why did it tear apart the owner of a coffee shop, because he had just discovered a strand of clothing between the mastiff's paws, and this strand of silk was on the coffee shop owner's clothes.

The most important thing is why this mastiff dog escaped and came back, Zhao Xin knew that the descendants of this ancient fierce beast were spiritual, but now they are like crazy, this is already very abnormal.

Just when Zhao Xin was at a loss, the mastiff stood up again, and this time the momentum was obviously much more fierce than before.

"Roaring ......"

The mastiff roared, its chest-sized paws rubbing against the ground. The blood-red eyes were full of hatred, and a thick breath erupted from his nose.

Zhao Xin licked his lips, knowing that there should be something wrong with this mastiff, or it should be said that it was controlled by something. The mastiff's speed was very fast, even a few points faster than just now.

Feeling that things were getting weirder and weirder, Zhao Xin no longer held it up, his body ejected like a cannonball, and a hovering golden vein faintly appeared on the right hand of the punch.

Puff......

Immediately, blood splattered in all directions, and Zhao Xin's hand hit the mastiff's chest alive, running through the entire chest. And the mastiff's eyes gradually dimmed, and the heavy body seemed to be lying on its stomach because it had lost its strength.

Rumble......

At the moment when Zhao Xin pulled his hand out of the mastiff's body, the mastiff's body also fell to the ground because it had no last pillar strength.

Looking at the red blood on his body, Zhao Xin looked at the dead mastiff again, and suddenly a bad feeling arose in his heart, and this feeling had made him die and escaped I don't know how many times.

Although he was not sure what was going on, Zhao Xin knew that the problem must have appeared in the mastiff's body, although it was already dead.

"Damn it"

Zhao Xin turned around and ran with a low shout, and the speed was much faster than when he fought with the mastiff, until he escaped from the prison where the mastiff was imprisoned, and then closed the iron door tightly.

Bang......

At the moment when Zhao Xin closed the door, there was a loud bang in the cell, and the entire corridor trembled, and he didn't need to look at Zhao Xin to know that the dead body of the mastiff had exploded.

"Hehe, exploding corpses......"

A cruel smile appeared on the corner of Zhao Xin's mouth, because this corpse explosion allowed him to finally find some frowns.

Among the existing races on the earth, in addition to humans, there are many descendants of ancient fierce beasts, and they are not human beings, but fierce beasts with the blood of ancient fierce beasts flowing in their bodies. And in addition to the descendants of the ancient beasts, there are also the descendants of the ancient beasts, all of whom have some residual power of their ancestral bloodlines.

More powerful than these ancient descendants are ancient beasts and ancient beasts, they have survived since ancient times, they are so powerful that Zhao Xin is jealous, and only in legends, in addition to the green dragon, white tiger, vermilion bird, Xuanwu, there are also Gou Chen and Teng snake, and they can be transformed into any form that is difficult to identify.

As the guardian of the human race, there are records of various races other than humans from ancient times to the present, and Zhao Xin has memorized all the races in hundreds of years, and the most important thing is the identification method of each race.

And only one fierce beast can do it from a distance of thousands of miles, and they are the descendants of the ancient divine beasts. Gluttonous sheep body, eyes under armpits, tiger teeth and human claws, the son of the dragon died under gluttony.

The most terrifying thing about this beast is not how powerful they are, but that they are very able to eat, and the key thing is that they can't excrete. Those who are preyed on by them are unlucky, because they can exhale the miasma from their bodies for the prey to absorb, and this miasma will make their prey unable to eat.

But even if you can't eat, this miasma can't be eliminated, and in the end you can only be blown up and died, or it can be said that you are dying alive.

The descendants of this ancient gluttonous beast were imprisoned in this underground city, and Zhao Xin almost didn't die when he caught this gluttony, if it weren't for the fact that this gluttonous thing ate too much and relaxed his vigilance while resting and digesting......

"Moo......"

As soon as I approached the prison cell, a cow-like sound came from inside, and it was very strange that the gluttonous sound, although it resembled a sheep, made a cow sound, so it was also rumored that it was like a cow.

But because of this, Zhao Xin was a little suspicious, if it was gluttony, then the mastiff should have had contact with it, but why didn't gluttony directly devour the mastiff?