The bodies of Silver King and Mimi were getting bigger again, and the blood-red patterns on their bodies became more bright and beautiful. Xu Xin subconsciously glanced at the map and found that these two guys were green light spots representing their companions, so he breathed a sigh of relief.

He was really afraid that these two guys would terminate the contract after upgrading, especially Mimi. The [mutant beast contract] was used only for low-level mutant beasts. Now it seems that the increase in strength after the contract will not affect the contract.

After taking two steps, the Silver King suddenly rose up and rushed over.

"Bang!"

Xu Xin was thrown to the ground and his back fell to the floor.

"Yeah!" Ke Ke was startled and subconsciously wanted to give the Silver King a few claws, but the claws grabbed the Silver King's hair and did not have any attack effect.

Xu Xin did not avoid it. He did not feel the malice of the Silver King.

Sure enough, after knocking down Xu Xin, the Silver King licked his face and made a whimpering sound, like a big dog acting coquettishly.

The two wolf teeth that looked thicker than before were swaying on Xu Xin's face, but perfectly avoided him.

"Haha, OK!" Xu Xin pushed the Silver King's mouth away.

The Silver King is still the Silver King, but after becoming an intermediate mutant beast, his personality seems to be more proactive.

Mimi also walked over, and its eyes looked at Xu Xin with much more intimate than before. Xu Xin noticed that Mimi's front paws became sharper, and she stepped on the floor of the tree house and even made several small holes on the floor.

"Mimi, take your paws back and don't tamp the floor!" Xu Xin jumped up immediately.

Although the tree house will be automatically repaired, it cannot withstand this step of thorny!

Mimi called out dissatisfiedly.

It has actually half retracted its claws, but this upgrade makes its claws longer and sharper than the gap, so even if it is retracted, it will have considerable damage.

It adjusted its posture and slowly retracted part of the sharp nails on its claws. Although part of it was exposed, it would no longer cause damage to the floor of the tree house.

"Huh..." Xu Xin breathed a sigh of relief, at least she didn't have to worry that Mimi would tear her house when she walked.

Ah Fu also flew over and landed on Mimi.

"Wow, you have become so big too!" Xu Xin was surprised. Just now Ah Fu flapped his wings twice, and he found that Ah Fu's wingspan was almost two meters! Moreover, the blood patterns on the inside of the wings were very bright, and their appearance was very different from before.

Although he didn't know Afu's species, he was definitely not a big bat. Afu was already the largest one he had chosen among all the bat groups, but at the beginning its wingspan was less than one meter, and it was still a little small when standing on his shoulders.

But now, good guy, he is almost catching up with the white-headed sea eagle he has seen.

Afu let out a scream. Although his body was a big circle, the scream was still so sharp.

Xu Xin touched the Silver King's head and said jokingly: "Silver King, among you, you are the only one who is not a whisper."

"Ao!" The Silver King raised his head and shouted.

Isn't it? Coco and Afu are typical whimpers. Although Mimi is already a giant, its screams are still a meow. There is no way. Without the vocal structure of the leopard subfamily beast, it may only be able to meow in this life.

Xu Xin took them to the window, told them his plans to the vines outside.

To break out of this area, you need a place to settle down first.

He needed to use the explosion arrow to blow up the vines within a range under the tree house, blow up a foothold, take the Silver King Mimi down, and then it was the time for them to show their skills.

These blood-thorn vines are just some low-level mutant creatures, all relying on their large numbers. The Silver King and Mimi, who have evolved into intermediate mutant beasts, can even roar to deter them. It should be no problem to open a path from the vines group.

"Silver King, you yell again and try."

"Ao? Woo... Ao Woo--" Although I didn't understand what Xu Xin was going to do, the Silver King still raised his head and roared.

As the Silver King roared, all the vines under the tree house shrank downwards and were shorter.

It seems that there is no problem. The two beasts have a strong deterrent effect on these blood-sting vines.

Mimi and Silver King are not ordinary intermediate mutant beasts. They are both the largest individuals in the clan. They are born aliens and are naturally very powerful. After becoming mutant beasts, they are naturally enhanced based on their own strength.

Not a mutant beast of the same level is equally powerful. Just like an intermediate mutant wild cat summoned from the altar, it was slapped to death by a tiger that was not even a mutant beast.

The foundation of oneself is very important. If one is not strong, one will have ordinary strength to become a mutant beast. Silver King and Mimi are among the strongest intermediate mutant beasts, so it should not be a big problem to deal with the following group of vines.

Xu Xin suddenly thought of the brown bear. Even if it was not a mutant beast, the bear had extremely powerful power. It is still unknown whether the Silver King Mimi can fight with him now.

If the brown bear can be turned into a mutant beast and subdue it, the combat effectiveness of his team will definitely increase exponentially. Of course, his appetite will also increase exponentially.

By the way, after these two guys upgraded, their appetite will definitely increase again.

Forget it, now is not the time to consider these things.

Xu Xin came to the weapon armor manufacturing platform and consumed all the saltpeter that Li Wenxi had given him before, plus the juice of mutant vines, and made five hundred explosive crossbow arrows.

After patting the explosive crossbow arrows full of backpacks, Xu Xin felt very at ease.

This should be enough.

If you are poor, tactics will be interspersed, and if you are great, you will be covered by firepower. Since you can cover firepower, you will not have to worry about doing anything else and directly bombard them!

"Let's go, Coco, don't go, it's very dangerous this time..." "Yeah!"

Before Xu Xin finished speaking, Keke interrupted him with a scream, climbed along his body onto his shoulders, indicating that it would go together.

"...You have to protect yourself later." "Yeah!"

Forget it, take it with it. Coco has a strong ability to perceive danger, and with it, you may be able to find that "heart" quickly.

Putting on his purple-level scale suit, eating all the blue-level fruits, and feeling the amplification effect of his outfit, Xu Xin became confident. He asked the four beasts to wait at the exit first, but he reached out to touch the exit of the tree house without hesitation.

Now his position is outside the outer wall of the third floor of the tree house, with a height of nearly twenty meters. This height will not be attacked by these vines. He looked out of the window but was not attacked, and it could be seen that the attack range of the blood-thorn vines has not reached at least twenty meters.

Xu Xin did not continue to descend, and he planned to burst out a foothold at the bottom.

Although the blood-thorn vines below could not attack him, they had already noticed an enemy above their heads. The dozen vines directly below Xu Xin stopped swinging naturally with the wind, holding up the vines in a ready-to-run position.

It looks like that, as long as Xu Xin dares to descend a few meters, they will throw them directly towards him!

However, Xu Xin would not descend. He assembled an explosive crossbow arrow, aimed at the vines, and pulled the trigger.

"Swoosh--" The explosion crossbow arrow shot like lightning, but the blood-sting vines were ready to go. Seeing something coming, several blood-sting vines shook them hard towards the flying explosive crossbow arrow, and accurately pulled them on the rapid-flying explosive crossbow arrow!

"Boom!" The crossbow arrow was not pulled away by these vines, but the violent flames burst out when it touched the first vine, and the explosion sounded.

The airflow generated by the explosion made Xu Xin, who was hanging in the air, shake his body and quickly control the roots to stabilize his body.

The vines that were drawn towards the explosion crossbow arrow were everywhere, and all the vines that were blown into pieces were broken.

Xu Xin was not in a hurry to post another post. He wanted to see the regeneration ability of these vines.

The relatively fine slags had lost their lives. The large and broken vines twisted on the ground a few times, but did not die motionlessly like the vines before. Instead, they crawled into the cracks on the ground like a bug, and finally inserted into it.

Then, half of the vines began to grow wildly, and within a few seconds, the half of the vines grew into a new vine again. The new vine immediately made a ready-to-run position.

Once it was launched, the vines did not decrease, and even a few more were added.

"...This is indeed a bit disgusting." Xu Xin was speechless. He decided to start covering the firepower.

With his current strength, it is completely possible to quickly wind the crossbow in the air without any force points.

Easily install an explosive crossbow arrow and pull the trigger downwards.

The scene just now reappeared, but Xu Xin quickly turned the strings and fired them again before they could grow.

This time, another part of the vines whipped and exploded in mid-air again.

Then, the third explosive crossbow arrow came again. This time, there were no vines around that could quickly intercept the crossbow arrow. The explosive crossbow arrow shot directly on the twisting and crawling half of the vines on the ground.

"boom!"

The broken vines were bombed again and finally could not bear it. They were blown into pieces all over the ground, and there was no sign of movement.

However, Xu Xin didn't care about this. His hand that was fitting the strings did not stop. He immediately installed one when he shot out and continued to shoot at the ground several meters below him.

"Boom!" "Boom!" "Boom!" "Boom!"

Explosion arrows exploded one after another, completely clearing out a small area on the ground.

"It's now!"

Xu Xin quickly returned to the tree house. Keke jumped onto his shoulder the moment he returned to the tree house. The other three beasts were also waiting at the door. He took the three beasts to quickly descend to the ground.

"Aowu--" The Silver King let out another long roar, causing the vines around him to attack to freeze. Mimi waved its already stretched claws in front of him without saying a word.

Several cold lights flashed by, and the vines within two meters ahead were cut into broken branches all over the ground in an instant! These broken branches twisted and crawled on the ground, looking for cracks that could penetrate into, hoping to regain their lives.

Xu Xin didn't want to worry about them. If he killed him, there would be a steady stream of vines again. He held a crossbow and said, "Continue, let's rush out!"

The vines around them kept trying to attack them, but under the deterrence of the Silver King, they did not dare to act rashly. Within a few seconds, they advanced more than ten meters.

Xu Xin drew out his long sword and cut down the vines that were tentatively attacking him, looking behind him.

The road that had been cleared was once again covered with vines, and then he realized that the red light at the roots of these new vines was even stronger.

"This... the more you kill, the stronger you become!" Xu Xin gritted her teeth.

But there is no way, and they can't attack themselves. These new vines don't seem to be afraid of the Silver King's intimidation, and want to rush over.

Xu Xin raised his hand and looked at a crossbow behind him.

"boom!"

The new vines were blown up again and could not attack them for the time being.

Mimi kept waving its claws in front of them to open the way. And looking at Mimi, it didn't feel tired at all. Instead, it would scream every time it waved and grabbed, with tyranny and cheerfulness in its screams.
To be continued...