The exchange list in the notebook is copied directly from the exchange system, originally Du Fei didn't know that the exchange system also has this function, and later he accidentally found that the exchange system can actually receive Bluetooth signals.

Although the infinite devices are basically useless now, when the distance is within 1 meter, they can still communicate with each other, so the Bluetooth function can still be used.

Du Fei directly copied the list of the exchange system to the notebook, of course, only below C-level, because now Du Fei is only a level 2 source energy warrior, and the highest can only be exchanged for C-level items.

In addition, skills cannot be exchanged for others, so theoretically, [Shooting Skills] and [Driving Skills] cannot be exchanged for others. And Du Fei also listed the bloodline skills he had exchanged as items that could not be exchanged for others, otherwise he would exchange them for a [Writing Wheel Eye] for others, and then be transplanted by others, and finally used to disgust himself, which would be too two.

In the C-level exchange, there is a more alternative exchange item "Devil Fruit".

That's right, it's the "Devil Fruit" in One Piece. Devil fruits do not belong to bloodline abilities, nor do they belong to martial arts skills, but belong to items, even if you exchange them yourself, you have to exchange them for fruits to eat.

C-level Devil Fruits are mostly weaker animal and superhuman, and the stronger ones are double C-level, while the natural Devil Fruit is very powerful and mostly belongs to B-level items. You have to have two more chances before you have the right to redeem B-rank items.

However, even if you eat a Devil Fruit, it doesn't mean that you have great power. For example, Luffy's rubber fruit, if it is very weak itself, eating the rubber fruit is just turning from tofu to noodles.

Du Fei had no intention of exchanging the "Devil Fruit" because its weakness was too obvious, and it was useless as soon as it touched the sea.

Du Fei flipped through it and also found the nemesis of the Devil Fruit Ability [Hailou Stone], [Hailou Stone] is a rare mineral, it is equivalent to the crystallization of the sea, and its composition is similar to that of the sea, which can be said to be the fixed form of the sea. It can emit the energy of the sea, so those with Devil Fruit abilities are not only afraid of the sea, but also afraid of the Hailou Stone.

[Hailou Stone] is not cheap, it is a double C-level item, and the price is 3W energy points, that is, 300g energy crystals.

Seeing this, Du Fei had a very evil and evil plan.

"'There is a black shop' newly opened, and it is sold at full cost price, so you should buy it as soon as possible. Otherwise, I don't know what it will be like in the future. Du Fei said.

"The second master, I think my attack power is a little weak, and the baby is completely powerless after the self-explosion." The third said.

"It's not a little, it's gray and weak." Du Fei corrected the boss together.

"I can't help it, do you want me to take a kitchen knife and cut it?" The third said.

"Didn't you notice? Most of the skill cooldowns of the strength and agility types are 5 minutes, while the cooldowns of the spirit types are 3 minutes, and even the [Corpse Explosion] has no cooldown time at all. So in terms of skills, the spiritual department has an advantage. Du Fei said.

"There's a P advantage, 3 minutes of cooldown is enough to die a few times. [Corpse Explosion Technique] needs something to explode, even if the street is full of rats and cockroaches, it will take time to control it, right? "The old three.

"Now there are few skills, and when your skills reach more than a dozen, then put the skills in a circle, and they will almost be cooled down." Du Fei said, saying that Du Fei remembered and asked about the exchange system, and he could have a few skills at most.

It turns out that skills are like forming something like a magic circuit in the human body, and of course the content is very complex. However, there is also a limit to the skills that can be accepted by the human body, and the stronger the physique, the more skills can be instilled.

Normally, a Level 1 Awakened can have 5 skill slots, with one added for each level. After the exchange is full, he can no longer accept the indoctrination of skills, but Du Fei himself can use new skills to cover the old skills, and others cannot.

Du Fei told several people the news and asked them to choose carefully.

In the end, the third child decided to become a level 2 awakened person first, and then consider the problem of skills, and by the way, practicing marksmanship is also a good means of attack.

Du Fei used liquid metal to dissolve the energy crystals and pressed them into the body of the third child from the pores. Metal control can help others absorb energy crystals, and Du Fei often helped others absorb them before rebirth, because the energy crystallization solution is relatively expensive, and the absorption rate is only 90% if swallowed directly, and close to 100% if absorbed with metal. ,

Therefore, a few months after the end of the world, there were some energy crystallization injectors with special source abilities, who specialized in helping the awakened absorb energy crystals and collect a little reward from them. Du Fei also did it for a while, but later he was framed by others for deducting energy crystals, and he quit after being beaten.

In the end, the boss exchanged for a double-D-level skill [Hardened Skin] at He Lizhen's insistence.

【Hardened Skin】Passive improvement of skin and muscle toughness, and the effect is better when the muscles are tight. Double D level skills, passive skills have no cooldown, and the price is 3000 energy points.

With this skill, the boss is basically immune to pistol bullets. The boss also shot a pistol in the arm very bloodily, and the bullet was embedded in the muscle, but half of it was exposed, and it basically couldn't get in.

Du Fei and the third Y laughed and teased the boss, saying, "Why do I think this skill should be called 'Golden Gun Doesn't Fall'?" ”

He Lizhen heard this and ran into the room shyly.

"Can you not be so damaged? You deserve to be singles. The boss glared at Du Fei and the third child, and chased into the room. Du Fei and the third child laughed loudly in the back.

After distributing the spoils, Du Fei also exchanged the second [Writing Wheel Eye], and directly spent more than 3,000 liters to the second hook jade, which enhanced the effect of illusion hypnosis. As for the copying function of the three hooks, one is enough for the time being.

Du Fei and Ji Tielan began to teach everyone to shoot guns, of course, real guns.

When everyone went up to the rooftop of the building, Du Fei poured out all the guns in the folding space and moved them to the rooftop.

Each person chose one, either lying on their stomachs, squatting or standing, aiming at the zombies in the street below.

Du Fei wanted to teach the beauties how to shoot, but Ji Tielan kicked him back to the eldest and third children. As a result, the six of them split into two teams and began to abuse the zombies.

The girls chose the SteyrScout bird sniper, which is light and suitable for girls. Most of the beasts like heavy snipers, and there happened to be two Barrett M82A1 heavy snipers, one for Du Fei, and the other for the boss. The third child prefers SteyrScout to be a little more light and delicate, like a little Lori.

Without considering the consumption of bullets, the learning speed of several people was not slow, from one out of ten shots at the beginning, to six or seven shots in ten shots later.

Use a sniper rifle to hit the head of a zombie, as long as it hits, it can basically beat the entire head into a rotten watermelon, and if you snipe, you need to make up for one more shot. After killing the zombies, the third child began to control the swarms of cockroaches to drill through the holes in the zombies' skulls, move the energy crystals out, and put them in a basket downstairs.

There was also a mutant sparrow the size of a rooster flying in the air, specially carrying the basket containing energy crystals downstairs.

While practicing marksmanship, while earning energy crystals, you don't have to pick it up yourself, this life is really leisurely.

In order not to attract the huge "hatred", the third child also specially sent a scavenger, his zombie maid NO.2, with a more fiery figure and slender legs, which made everyone have to suspect that there was something wrong with the third child. The zombie maid NO.2 is very dedicated, and she has eaten all the zombie remains on the street in the past two days.

And the mutated black cat with a broken leg, under the powerful onslaught of hunger and catnip, has succumbed. Originally, the third child wanted to control it and named it NO.3, but it was seriously protested by several girls.

In the end, the mutant black cat was put on a collar, raised, and at the strong request of the women, it was named "Little Black", although it did not look small. The legs have also been attached to it, and Du Fei has done his hands and feet on the collar, and it can't run away if it wants to.

After three days of cleaning, there were no zombies in sight within a radius of a few kilometers.

During this period, some hard bones were also attracted, and two creepers came yesterday. And today there is a mutant Pitbull.

Pitbulls are considered to be the world's No. 1 fighting dogs, with a graceful body shape, developed muscles, high IQ, tenacious will, amazing endurance, good hygiene habits, and are a valuable dog breed in the fighting dog world. However, pitbulls have a short temper and bite people is common.

However, these are not the biggest reasons why Pitbulls are famous, Pitbulls have the stamina to last for 120 minutes, a bite force of 80 kilograms per square centimeter, and a tough skin without pain nerves. This makes Pitbulls the best fighting dogs.

What's more, the body structure of the Pitbull is very suitable for being a fierce beast, when its size reaches more than two meters long and more than one meter high, the divine horse lion and tiger are funny.

Du Fei looked at the huge mutant pitbull downstairs, took a deep breath and said loudly: "Entering the first-level combat readiness, a guest with a violent personality has come. ”