Xu Ruizai carefully looked at the design drawings.

"The right energy source was found, but there was no suitable material for the barrel. The barrel of an ordinary gun made of metal simply cannot withstand the burst of evolutionary energy. ”

"Yes, the metal barrel used now can't withstand this kind of energy at all, if you don't limit the amount of evolution energy of each bullet, if you output it with all your strength, it won't be fired at all, and it will explode directly."

"In other words, this thing is a half-finished product now, I won't get it anyway, tell me if you need anything, and I'll help you get it." Xu Rui glanced at Wang Wei and said.

"You're welcome to say that, I need the hard stuff of all evolved creatures."

"If there is a barrel that can withstand the impact of energy bursts, how powerful is this gun." Xu Rui looked at Wang Wei seriously and asked.

"It's hard to say, the more power you need, the more energy you need, and now the amount of ammunition is also a problem, but about the amount of a transparent evolution stone can fire ten bullets with a power almost equal to the power of a police pistol. If there were a few hundred transparent evolutionary stones that could be integrated into one shot, I felt that one shot could make my house disappear. ”

"I guess I want the gray evolution stone, which I found from the evolved zombie brain." As he spoke, Xu Rui took out the gray evolution stone in the brain of the zombie doll and the female zombie.

"Gray Evolution Stone? Is this evolution stone still graded? Wang Wei looked at Xu Rui in confusion and asked.

"It seems that yes, zombies will also evolve, the color of the evolution stone in the brain of the stronger zombie is different from the color in the brain of the ordinary zombie, the evolution stone in the brain of the ordinary zombie is transparent, without a trace of color, and the stronger evolution zombie is not only stronger than the ordinary zombie, but the evolution stone in the brain is gray, I don't know if there are any sequelae of taking it."

"Okay, let's sleep, I'll go out tomorrow to get barrel materials."

Early morning.

"I'm out and take care of them." After Xu Rui finished speaking to Wang Wei, he went out with Da Hei and Xiao Bai.

"I can only go to the park! There's a small zoo and there's a lot of animals, and maybe some crustaceans can find the materials they need. Saying that, Xu Rui rode on Da Hei, and Xiao Bai ran behind. Although there were many ordinary zombies along the way, they did not encounter stronger evolved zombies.

When standing in front of H City Park. Xu Rui felt obvious aura oppression. In the quiet park, a few animal roars occasionally sounded, which seemed particularly infiltrating. And the big black and the little white are very vigilant looking around.

This is a small zoo in a park in H city, covering an area of only 600*600, Xu Rui's purpose is very clear, there is a reptile pet hall on the periphery of the zoo, Xu Rui remembers that there are many turtles in it, if the turtle evolves, then the hardness of the turtle shell must be more than steel. It is a good material for making a gun barrel.

Xu Rui was stunned by the scene in the park, although the roots of the street trees outside have begun to collapse the road, but the height is only more than ten meters, and this small park, like a primeval forest, the shortest and 30 meters high trees cover the entire park, and the stone roads in the park have all turned into gravel. Xu Rui looked at the branches at the top of the tree, the sunlight could not penetrate the dense leaves to the ground at all, and looked up at the branches, not even a bird. The bones of the rubble on the ground are full of human and animal bones, but there is one common feature, that is, it is too clean, and there is no blood or corpse fragments except for the bones.

What kind of creature did this, so terrible, even the carrion of zombies.

"Xiaobai, go up the tree! Let's go in that direction and alert me if something is near! Xu Rui pointed in the direction of the Climbing Pet Pavilion.

Saying that, Xu Rui crept sneakily towards the reptile pet hall.

Xu Rui felt that the atmosphere in the neighborhood was a little weird, quiet and weird.

Isn't it too quiet around here, you can still hear a few roars before, why is it so quiet now?

There won't be any powerful creatures, right?

Xu Rui walked to the door of the Reptile Pet Pavilion and stopped.

A sound of breaking the air suddenly sounded, and Xu Rui only felt that something shot into his face.

Xu Rui didn't panic too much, stretched out his right hand and grabbed the shot thing like lightning, pulling and pulling.

A chameleon was pulled off the branch by Xu Rui, Xu Rui held the chameleon's other foot with one hand and stepped on the chameleon's body, and with a slam, the chameleon's iron tongue was pulled out by Xu Rui.

The chameleon fought back on the verge of death, opened his mouth and bit Xu Rui's foot, biting Xu Rui's small half of his foot, Xu Rui was just about to make a move, only to see two figures, one black and one white, pounced on the chameleon, Xiao Hei opened his big mouth and directly bit the back half of the chameleon's body, while Xiao Bai bit off the chameleon's head except for the jaw.

Xu Rui directly asked Da Hei Xiaobai to eat the chameleon, this chameleon should be hanging here after the end came, it was not strong at all, and the teeth and claws on the body were similar to steel, Da Hei and Xiaobai reached a consensus on the behavior of eating chameleons. Shovel officer? You want me to eat this?

"If you don't eat it, forget it, why do you look at me with disgust." Xu Rui dragged his injured foot and continued to walk, what Xu Rui didn't find was that the wound was now scarred, but it was glued to the socks!

Along the way, Xu Rui encountered a lot of broken glass cages, Xu Rui walked to the small lake where he could see turtles before, this lake was about 100 meters wide, and the deepest water was about three meters deep, and now, Xu Rui saw a calm dark green lake without a trace of waves, and there was a shoe next to the lake.

A trace of vigilance rose in Xu Rui's heart.

The shoe should have belonged to a breeder, and the owner of the shoe should have died, maybe the murderer was in this lake. Xu Rui did not continue to approach the lake for safety reasons, but picked up small pebbles on the ground and kept throwing them towards the lake.

Hundreds of stones were thrown, until there was a vacuum zone on the stones on the ground, there was no more stone near Xu Rui, and Xu Rui had already given up preparing to explore the lake with his face, when a huge object suddenly appeared in the middle of the lake, with a loud roar, it swam towards Xu Rui quickly, and swam ashore from the middle of the lake in less than two seconds. It was a giant snapping turtle that was two meters tall and full of rage.

Xu Rui looked at this two-meter-tall giant tortoise, and his face changed in an instant.

So big? What do you eat to look like? You're drugged. Also, when did there be snapping turtles in this lake?

"Run!" Saying that, Xu Rui ran outside, and he didn't care about any turtle shells or anything like that, just kidding, he didn't have enough for that bite, just looking at the snapping turtle's mouth, he felt that he could eat half of him in one bite, this is still a hair?

When the snapping turtle saw Xu Rui running like this, he was not convinced at that time, and his temper came up, boy, it was you who woke me up, and now you wake me up and I'm going to run? I'm not going to eat you today! As he spoke, he chased after Xu Rui with four big thick legs at a speed faster than Xu Rui.