[Soaking in potassium permanganate solution for 24 hours can remove residual toxic substances in the crystal nucleus.]

The Beginner's Guide to Doomsday Survival is clearly marked in bold font.

The crystal nucleus purification method that countless white mice tried and failed to crack in the previous life is actually so simple?

Potassium permanganate tablets cost a few yuan for a box. They are a common sterilization and disinfection drug. They can also be used as water purification tablets when necessary.

But in the previous life, the professional talents and equipment that could produce chemicals were monopolized by major bases, and ordinary people could not buy them even if they had money.

Fortunately, Lu Sheng had suffered from water pollution in his previous life, so when he was stocking up on goods, he stocked up a lot at a low price. He didn't expect that a strange combination of circumstances could be useful in this regard.

Although the system signed in and gave an essence extraction machine, Sun Tiantian and others were given a reasonable explanation.

Lu Sheng took out a bottle of potassium permanganate disinfectant tablets from the space, took out the washbasin, poured hot water into it, and threw one tablet in.

The water in the basin quickly turned purple. Lu Sheng put all the crystal nuclei into the water, and traces of dirty black substance immediately oozed out from the water.

A faint rotten smell curled up from above the washbasin.

Lu Sheng pinched his nose and found another basin to cover it, thus blocking out the stench.

All the collective property was disinfected with potassium permanganate. Lu Sheng grabbed a few of the extra loot crystal nuclei left in the space and threw them into the essence extraction machine.

Creaky.

Press the start button, and after a few crisp grinding sounds, a small stream of transparent liquid flows out of the machine.

Lu Sheng connected it with a cup. The five primary crystal nuclei were just about 100ml.

I tapped it with the tip of my tongue. It was cool and a little sweet, like rock sugar water.

"You won't squirt after drinking this stuff..." Lu Sheng stared at the sweet water in the cup.

Forget it.

He raised his head and sighed.

The little sweet water slides into the throat, giving a refreshing and refreshing feeling to the lungs.

Lu Sheng felt as if the fatigue in his body had been swept away, as if a steady stream of energy was being injected into his blood.

Tried to release some superpowers.

Zhila!

Zhuangzhuang was startled by the huge electric ball formed on his fingertips, and shrank behind the sofa with his tail between his legs.

Lu Sheng had to accumulate energy for a few seconds every time before releasing his electric power, and his body would feel briefly exhausted after releasing the power.

But now after drinking a small cup of sweet water, my waist is no longer sore and my legs are no longer hurting. Just pinch it and you can get one hundred thousand volts.

You have to eat at least 10 wild Pikachus alive to get such a level of electrical enhancement.

Lu Sheng silently placed the essence extraction machine in the safest and most eye-catching location in the space. From now on, whether you drink soup or eat meat will all depend on it.

Putting away the remaining crystal cores in the space, Lu Sheng hugged Zhuang Zhuang and climbed onto the bed.

One cup a day is just right. If you take it too much at once, you may get nosebleeds.

…

Early the next morning, Lu Sheng made breakfast early and served it to 402.

Braised beef noodles, the noodles are chewy and chewy, and the toppings are fragrant and glutinous.

While Sun Tiantian and Xiao Yu were eating noodles, they poured the purified advanced fortified serum into Sun Tiantian's juice.

There was also a power conversion book dropped by killing the little alien, and another piece of chocolate, which was quietly put into Xiao Yu's hot milk.

Before the meal was finished, the medicine began to take effect on both of them.

Sun Tiantian was the first to go back to the bedroom. Xiao Yu kept his eyelids open and insisted on finishing the dishes, then fell directly on the sofa and fell asleep.

Lu Sheng held Zhuang Zhuang in his arms and waited anxiously all morning before the two of them woke up slowly.

Fortunately, Sun Tiantian awakened the frost power, and Xiao Yu also awakened the water power under the influence of the power conversion book.

Lu Sheng: "..."

This world really belongs to the love brain.

After the end of the world, power and speed-type abilities will have certain advantages in the early stage, but as more crystal cores are obtained, elemental and natural systems will become powerful professions in the later stage as the level of abilities increases.

Frost abilities are considered to be a very strong element in the elemental system. They are even more powerful in an environment with water and can exert 200% of their strength.

Sun Tiantian and Xiao Yu are two conjoined twins, one with a frost element and the other with a water element, which just complement each other.

There is also a hidden benefit. After a person with frost powers awakens, his body's adaptability to low temperatures will be far greater than that of ordinary people. At least Sun Tiantian can spend the current extremely cold period more easily.

"We won't be short of water in the future, right?"

Xiao Yu controlled the small water polo in his palm and had a great time playing with Zhuang Zhuang.

Zhuangzhuang scratched the water ball with his paw, poured water all over his head, and meowed at Lu Sheng.

"Superpowers require a certain amount of proficiency, so let's save some water first." Lu Sheng put on his gloves and hat, "Let's save some while the snow upstairs is clean."

The three of them brought all the big basins in the dormitory and wrapped them up tightly.

There are already two or three groups of people on the top floor loading snow and water, and Jiang Lan is also there.

Fortunately, the temperature in the imperial capital is more than minus ten degrees Celsius in winter, so students who live on campus have at least two winter coats.

The snow on the roof is white and soft. Put it in a basin and bring it inside to let it sit for a while and it will turn into clean water.

Lu Sheng and the others were shoveling the snow with a big basin when suddenly heart-wrenching cries came from downstairs, which made the ears of those who heard them numb.

"It seems to be Bai Shuangshuang and the others..." Sun Tiantian glanced down.

A eight-hand Beijing Jeep was parked downstairs, and Su Zicheng and Li Xiang were lifting people from the back seat of the car.

"Hey, isn't this Miss Xihua? I haven't seen you act like this in a few days." Xiao Yu still remembered that Bai Shuangshuang instigated someone to cause trouble last time, and said sarcastically.

One of the girls who was carried out was Bai Shuangshuang, and the other looked familiar but could not name her. Both of them were disheveled and had messy hair. They were crying and howling when they got off the car.

Bai Shuangshuang had already injured one of her legs and was limping when she walked. Now her posture looked more serious, as if she was about to fall down before taking two steps.

The other one didn't fare much better. He staggered into the building, with red dots falling on the floor behind him.

Su Zicheng and Li Xiang chatted flatteringly with the man in the cab, and after a while they threw a few bags of rice bricks from the car window.

"Are you coming to the dock?" Xiao Yu raised a question mark on his head.

In the end, Jiang Lan helped the three people solve their doubts.

"Su Zicheng and Li Xiang somehow got into contact with the big brother who collects protection money outside the school. They have sent out several girls in the building in the past two days."

"Those people are all beasts, they want girls to die." Jiang Lan looked complicated and silently tightened her collar, "The two who came back yesterday didn't have a good piece of meat on their bodies. It is said that when they went to the toilet, the pool was full of blood.

"

"Let these beasts play for a few hours in exchange for 2 bags of rice bricks, and give Su Zicheng and Li Xiang 30%."

Lu Sheng sneered, never expecting that Su Zicheng was so smart that he would become a madam in the apocalypse.

"Is that guy in the car the eldest brother?" Sun Tiantian asked, pointing to the pudgy young man in the Beijing Jeep.

"Yes, that's him." Jiang Lan nodded.
Chapter completed!