Xu Xin returned to the dungeon, opened the door and entered the first room in the corridor.

In the room at this time, Chang Yin and Xue Lan were sitting at the table, while the little boy and the maid were playing on the side. When Xu Xin pushed the door open and entered, the eyes of the several stone statues were all focused on him.

Being stared at by the seemingly lifeless eyes of the four stone statues made Xu Xin feel a little creepy. He quickly said: "The road above is indeed closed. It seems that the only way we can go is the corridor."

Changyin shrugged: "I'll just tell you. You must not believe it. I wasted so long."

Xu Xin didn't think it was a waste of time. At least he got in touch with everyone in [Explorer] and got some information.

"Then let's set off and try to get out of this underground tonight." Xu Xin did not sit down, but leaned directly against the door and said.

"Leave now?" Xue Lan looked at Xu Xin with some surprise, "Why don't you take a break? Those institutions are very scary."

Having been eating oranges and apricots, he is still full of energy and energy and does not need to rest at all.

"No need. Before I leave, I will contract with some mutated beasts."

Xu Xin and the four stone statues arrived at the door of the room where the mutated beasts were kept, and Chang Yin pushed the door open and entered.

In the huge underground stone chamber, the eyes of a group of mutated beasts that had broken out of their cages were all focused on Xu Xin and the others.

Sure enough, everyone has woken up.

After howling a few times, the dozen mutated beasts at the front rushed towards them.

Just as Xu Xin was about to take out the broom, Chang Yin stamped his foot, causing the whole ground to tremble instantly, and then he roared: "Go back!"

All the mutated beasts were shocked to the spot, and then slowly retreated. In less than half a minute, all the mutated beasts returned to the iron cages that they had destroyed, and lay down obediently.

...Is it so strong?

"Okay, choose according to your own preferences. Do you want me to give you some advice?" Chang Yin didn't feel at all how great what he did was, so he turned to Xu Xin and said.

"Are there any that are fast and aggressive?" Xu Xin asked.

"Come with me."

Xue Lan, the child and the maid did not come in. Chang Yin led Xu Xin through the gaps between the cages.

Looking at the destroyed cages around him and the mutated beasts that could jump out at any time, Xu Xin was lying if he said he was not panicking. The distance was too close, and with the explosive speed of these beasts, it would be difficult for him to even dodge.

However, whenever Changyin came close, the beasts in these cages would either lie down with their heads curled up, or huddle in the farthest corner of the cage and tremble, looking like dogs that had made mistakes.

"They are so afraid of you because they have already signed a contract with you?" Xu Xin asked curiously.

"No, they are just afraid of my strength, and I have done many experiments on them, so they should be afraid of me."

Soon, Chang Yin led Xu Xin to a cage. This cage was not made of iron, but another kind of metal. The cage was not rusty or damaged, but because the color was a dark red rust color, it was different from the surrounding ones.

The colors are very similar. When Xu Xin came here for the first time, she didn't notice the difference in this cage.

In the cage was a cheetah covered with blood-red patterns. At this time, the cheetah did not tremble like other mutated beasts, but bared its teeth and roared at Xu Xin and Chang Yin outside the cage.

Coco lay on Xu Xin's shoulder and bared her teeth at the cheetah in the cage.

"How do you feel about this cheetah?"

Xu Xin's eyes lit up, it was a cheetah! He had found a treasure!

Xu Xinke is very familiar with the cheetah. Although like the leopard, it has the word "leopard" in its name, the cheetah is not a muscular member of the leopard subfamily, but a slender cat subfamily. The reason why it is called leopard is just

Because it looks more like a leopard.

Compared with tigers, lions and leopards, the cheetah is indeed much weaker. Many people regard it as a doormat on the grassland. It is bullied in turn by hyenas, leopards, and lions. Even vultures dare to snatch the cheetah's food.

Although weak, cheetahs also have a powerful side. Cheetahs are the fastest land creatures on earth. They can reach a maximum speed of 130 kilometers per hour, which is three times the speed of Usain Bolt. At the same time, 100 kilometers

It takes just over two seconds to accelerate, an acceleration that even most top sports cars cannot match.

Also because of its fast speed, the cheetah's hunting success rate can reach an astonishing nearly 60%. You must know that the hunting success rate of tigers has not reached 30%, and the hunting success rate of lions is not even 20%. Of course, a successful hunting does not mean that it will not be possible.

Hungry, because it does not have strong strength, it is common for cheetahs to have their food robbed. After all, they are the doormats of the grassland.

But the mutated cheetah in front of him didn't look weak at all. This cheetah was very big, weighing nearly two hundred kilograms, which was bigger than some tigers. If it weren't for its still slender body, Xu Xin would have almost thought it was

It's a leopard.

Moreover, this cheetah has a very obvious red pattern, which is almost the same as the blood-striped rabbit and blood-striped cat summoned by Xu Xin from the altar.

"This cheetah is my most successful test subject. Its level is just a little short of reaching the level of an intermediate mutant beast." Changyin pointed at the cheetah and raised its two front paws.

Only then did Xu Xin discover that the two front paws of the cheetah had changed in appearance like a blood-striped cat. The claws protruding out at this time were extremely sharp, like Wolverine's war claws.

"Unfortunately, this is the limit that I can reach. Using reagents extracted from the flesh and blood of intermediate mutant beasts may not be able to mutate ordinary beasts into intermediate beasts." Chang Yin shook his head with some regret.

"That's it." Xu Xin took out a [Mutated Beast Contract] and crushed it directly against the cheetah.

"Hey you..."

[Contract failed, please try again.]

Huh? Will the contract fail? Xu Xin was a little embarrassed.

"I've told you, this one is almost at the intermediate level. Even if it's not yet the intermediate level, you can't make a contract directly, right? You have to make him feel a sense of surrender to you." Chang Yin said with a black line on his head.

Look at Xu Xin.

Xu Xin rubbed his nose in embarrassment. He thought these contracts could be signed directly and forcefully.

After thinking about it, it seems that this is really the case.

So far, he has only contracted with the Silver King and the Bat in the Ring.

When he made the contract with the Silver King, he was already in a dying state. If he didn't agree to the contract, he might die suddenly at any time. Xu Xin told him that if he wanted to continue living, he should sign the contract. Only the Wolf King who had a strong desire to survive at that time would

agree.

When making a contract with the bat, it was so frightened by the [special broom] in Xu Xin's hand that it did not dare to move. It wrapped its body and shivered. It was indeed in a state of surrender, so the contract process went so smoothly.

Xu Xin immediately took out the broom from his backpack.

The moment he took it out, the beasts in other cages around him all shrank in the opposite direction of Xu Xin.

The cheetah in the cage in front of him also took a step back and made a threatening sound towards him. Because he was familiar with cats as a cat at home, Xu Xin could see that there was a hint of fear in the threat of this cheetah.

"Your broom is really easy to use." Xu Xin couldn't help but said to Chang Yin.

"Then it's inevitable, it's wet... Why am I telling you this? You'd better sign a contract with it quickly, and then we're leaving." Changyin stopped after half a sentence, urging Xu Xin.

But Xu Xin still caught a glimmer of information. Something was sprinkled on this broom to make the low-level mutant beasts so scared. Could it be the blood of some high-level mutant beasts?

"Coco, are you afraid of this thing?" Xu Xin waved the broom in front of Coco a few times. The beasts around him shrank into the corners of the cage in an instant, and the cheetah in front of him immediately exploded its fur, let out a meow, and scratched with a claw.

On the metal railing in front of Xu Xin.

Fortunately, the metal railing was specially made and was not broken by its claws.

"Huh." Coco shook her head, and then glanced at the cheetah in the cage with disdain, as if to say, I can't believe that such a big man would react so strongly to a broom.

The cheetah is an animal of the subfamily Feline. Its cry is not a roar like a tiger or a lion, but a cat's cry. This made Xu Xin laugh a little. She didn't expect that even such a big cheetah's cry could be so cute.

At this time, Changyin also did Xu Xin a favor. He stamped his foot. The strong deterrent force made the body of the cheetah in the cage tremble. Then he urged: "Hurry, use that gun to poke it."

Give it a few blows and maybe it will surrender."

But Xu Xin didn't do that. Changyin's contract did not have the function of restoring injuries.

Xu Xin squatted down and looked at the cheetah, took out a contract in his hand, and started talking: "I think you don't want to stay in this cage anymore. Do you want to run in the vast world outside? Outside

You are about to leave, this is your last chance, after we leave, this place will be closed, and you will have to stay in this cage until you die."

The blood-striped cheetah seemed to understand Xu Xin's words. It opened its mouth to breathe and slowly closed it, and its expression was no longer so ferocious.

"After the contract, you will be my partner. I will provide you with shelter and food so that you can live a life without worrying about food and drink."

"Hey!" Coco jumped in front of the cage and patted her chest to prove that Xu Xin was telling the truth.

Perhaps the cocoa had an effect, and the cheetah's tense body gradually relaxed.

Striking while the iron is hot, Xu Xin threw a large red berry into the cage.

Attracted by the smell of red berries, the cheetah sniffed it twice, looked up at them, and finally couldn't hold back and ate the red berries.

At this time Xu Xin once again crushed the contract in his hand.

This time, the cheetah only struggled symbolically twice before giving up its resistance and was wrapped in the fragments of the contract.

It's quite easy.

[Contract mutant cheetah, points earned: 90 points]

Based on a five-to-one ratio, this cheetah's points in the last hunting activity were 450 points, while the blood-striped rabbit and blood-striped cat had 500 points. Sure enough, it was only a little lower than the intermediate mutant beast.

That's all.

Changyin pressed a mechanism next to it, and the special cage was slowly opened.

The contracted blood-striped cheetah became much docile, but it did not directly come up to Xu Xin like the Silver King. Instead, it stood beside him coldly. Xu Xin tried to touch it, but it dodged it.

Averted.

Maybe this is the difference between cats and canines.

"What kind of material is your cage made of?" Xu Xin was a little jealous of this metal, which could actually face the cheetah's claws without any damage.

"Don't think about it, I don't know. This has been underground from the beginning."

Xu Xin tried to recycle the cage, but it didn't work, so she had to give up.

After taming the cheetah, Xu Xin became more confident.

There is a red panda Coco who is sensitive to dangers and treasures, a mutated bat that can fly to find paths, a mutated cheetah that is extremely fast and has strong attack power, and there is also a very strong endurance that can not run long distances.

The tired Silver King, his beast team gradually became stronger.
Chapter completed!