After closing Li Sike's chat window, Su Heng turned to mail out the 1500ml that Yin Yanyan deserved.

After running the machine a few times, Su Heng obtained 14.5L of pure water.

Yin Yanyan: "Ah, Brother Su, you haven't slept yet, it's almost 12 o'clock!"

Yin Yanyan: "It's not too late for me tomorrow."

Su Heng: "I got it."

Yin Yanyan: "I got it, I got it!"

Yin Yanyan: "Brother Xiao Su, hurry up and sleep!"

Su Heng: "Okay."

Yin Yanyan: "Good night and good night."

Su Heng lay back on the bed and fell asleep next to the pillow.

Early morning.

Su Heng slowly opened his sleepy eyes.

【Sign in successfully】

[This is the fifth day of your existence: get 100 Doomsday Honor points! 】

[Current Doomsday Honor Remaining: 110 points]

Su Heng felt a furry pressure.

Looking up, Luo Luo was actually sleeping at his feet.

"Why did you little guy come up?"

Su Heng poked Lolo's jaw with his foot.

Luo Luo rubbed against the side, yawned greatly, and looked like she didn't get enough sleep.

Su Heng put on his clothes, wiped his face briefly, and then started cooking.

"Today is the last day before the disaster strikes, and I have to finish all the work."

Su Heng added some firewood to the coal stove, put the iron pot on it and started cooking.

"Meow~meow~"

Breakfast was just out of the pot. I don't know when Luo Luo jumped off the bed and shouted at Su Heng's feet.

Most of the meows of cats when they are young are the same, like kittens.

"Do you smell it?"

Su Heng squatted down and rubbed Lolo's little head a few times.

He wanted to raise a cat before, but because his family was poor and worried that he would not be able to take care of him, he never kept one.

It would be better to be thrown into the apocalypse, which directly gave him the opportunity to raise a big cat.

"Big cats are cats too."

Mutant beasts are actually not picky eaters, and even infecting food is more conducive to its growth.

However, seeing how greedy it was, Su Heng still gave Lolo half of the breakfast.

The two filled their stomachs with satisfaction.

"Go and finish the last covert work first."

Su Heng checked the sentry radar, and there were no mutant beasts nearby.

"I won't wear the equipment, but I still bring it with me just in case."

"Are you going to go outside with me, or stay in the safe house and help watch the house?"

Luo Luo excitedly ran to the steps, waiting for Su Heng to open the safety door.

"Then take you with me."

After Su Heng finished packing, he took Xiao Hei and Lolo out of the safe house.

After several days of hard work, Su Heng has already changed the entire landscape around the safe house.

The current progress has been completed 4/5.

"If nothing happens, it should be done this morning."

"Let's do it!"

Su Heng picked up the shovel and started to work.

During the break, Su Heng drank the last can of Red Bull in his hand.

Noon.

After two and a half days, Su Heng finally completed the change of the nearby landform.

Looking at the fruits of his labor, Su Heng was greatly satisfied.

"Now you don't have to worry about being discovered."

Now the safe house not only has extremely high concealment, but also has sentry radar that can give early warning.

Once an enemy or monster approaches, Su Heng can take countermeasures in advance.

Even if there are far more opponents than him, as long as they hide in the safe house and don't get angry, they can guarantee that they won't be discovered.

"Advance can be attacked, retreat can be defended."

After returning to the safe house, Luo Luo couldn't wait to rush to the unprocessed black-scaled bear corpse in the corner.

"Meow~meow~"

It called Su Heng twice, as if asking for Su Heng's permission.

There is a sentry radar, which is equivalent to Su Heng monitoring the vicinity 24 hours a day.

But Luoluo doesn't understand this kind of technology building.

When Su Heng was working, Luo Luo was like a personal guard, patrolling around Su Heng all the time.

"Hurry up and eat, I approve!"

After finishing lunch, Su Heng immediately started to upgrade his wooden bed.

"It's impossible to upgrade the concrete safe house at this stage, but it's not a problem to build a traditional heated kang."

[Wooden Small Bed] Upgrade to [Standard Large Bed]

[Materials Required: Ordinary Wood 15/167]

[Required Doomsday Honor Points: 10/40]

"Is there no option for the Northeast Heated Kang?"

Su Heng felt that there should be more than just this upgrade route.

"Could it be that my 1m5*1m8 bed is not good enough?"

upgrade!

Su Heng spent 15 units of ordinary wood to upgrade the small wooden bed to a 1m8*2m [standard large bed]

[Standard king bed]

[Quality: Intermediate]

[Grade: Normal]

[Comment: It's a pity not to sleep two people in such a good big bed! ]

Su Heng: ? ?

Now is not the time to talk about this!

[Standard King Bed] Upgrade to [High Quality Wooden Bed]

[Materials Required: Intermediate Wood 8/12]

[Required Doomsday Honor Points: 10/100]

"Still there is no option for a heated kang?"

Su Heng has read some global doomsday novels. There are many upgrade routes for items. Why is there no one here?

"I can't upgrade a high-quality wooden bed, or there is no option for a heated kang?"

Su Heng didn't have so much intermediate wood in his hand, and he was not willing to upgrade a bed with the hard-won intermediate materials.

"There is no upgrade route, but I can customize the upgrade direction!"

Su Heng quickly created an upgrade plan and entered the upgrade name.

According to the construction ideas just described by Liang Ruizhi, Su Heng added the required materials.

The system automatically added an upgrade plan for the heated kang.

[Traditional Ondol (custom)]

[Required materials: aluminum pipes 0/2, stone 0/40, polluted water 0L/12L, soil 0kg/16kg, plant fiber 0kg/5kg]

[Custom upgrade plan is not available for the first upgrade of Doomsday Honor! ]

"The required materials are all common materials, and it should not be difficult to receive them on the exchange."

Su Heng first left a message to Dr. Li, telling him that he could collect more polluted water today.

"As for soil and plant fibers..."

Su Heng glanced at Xiao Hei who was hanging up in the safe house and let him collect it.

When adding tasks to Xiao Hei, Su Heng specially noted that the higher the humidity of the soil, the better, so that some water can be left.

Now he only needs to go to the exchange to collect 1 unit of aluminum block, and 40 units of stone will be ok.

Su Heng took out the doomsday camera, took a picture of the pure water in his hand, and then added it to his trading post.

【Seller: Su Heng】

【Items on the shelf: 2000ml pure water】

【Intention to trade: 40 units of stone】

[Remarks: [Picture][Picture][Picture], 50ml of pure water can be exchanged voluntarily for each unit of ordinary stone, on a first-come, first-served basis]

The trading posts with pictures quickly got a lot of traffic exposure and rushed to the forefront of the exchange.

A few seconds after posting, a large group of trolls gathered underneath.

"Damn it, this vampire is here again!"

"Just want to change 1 unit of stone for 50ml of pure water?"

"Pinch, why don't you grab it?"

"There will be free water to drink tomorrow morning, why should I change it with you?"

"That's right, I'll just endure it for a day. Whoever replaces whoever is the other will be a big injustice!"

"You don't understand this. I can explain it from a financial point of view~lightnovelpub.net~ Now the purchasing power of pure water has dropped a lot, who will not have dozens of liters of water in the next few days? , he is in a hurry to throw it out!"

"No wonder, the next step of the wooden safe house will basically choose to upgrade it to a stone safe house. He wants to replace it with hard materials and cut us like leeks!"

"Everyone, hold on, don't let these black-hearted businessmen succeed!"

"Sit and wait for the snow tomorrow."

"Upstairs, you should say wait for these profiteers to go bankrupt and die of poverty."

Once the transaction post was sent, Su Heng received a large number of offensive messages.

When Su Heng collected stones before, he also collected them according to this ratio.

At that time, there were not so many people who scold him, but the time was different, which led to more trolls.

Su Heng's experience was similar to that of Li Sike, and he was labelled a black-hearted businessman.

"Since these people don't want water, I'm not willing to change it!"

Su Heng originally wanted to do some good deeds. Swapping out 2000ml of pure water would definitely save a few lives.

In this case.

Su Heng replaced 2000ml of pure water with 2kg of cold-eaten rabbits.

"Water is much more precious than meat."

"They are too clueless."

"Forget it, you should save resources for yourself."

After the replacement of the items on the shelves was completed, Su Heng traded the stones one after another.

Public opinion kills people!

Many people have been misled by this kind of remarks, thinking that as long as they survive today, they will have water to drink, as long as they store a certain amount of food.

But they don't know that after tomorrow, the purchasing power of water will greatly increase, even surpassing the previous value, possibly more than doubling!