Doomsday disaster: Stock up on billions of supplies at the beginning

The two of them were so busy that they had to face each other.

"Ding! Dong! Bang!"

A pile of steel was taken out by Mu Yun, who immediately ordered everyone to build a simple large iron shed.

Several iron sheets were covered on the roof, and dense raindrops hit the iron sheets, making a muffled crackling sound.

Chu Antian's ability also disappeared at this moment because of the exhaustion of energy.

Iron and concentrated sulfuric acid will not react at room temperature.

When iron and concentrated sulfuric acid come into contact at room temperature, they will react on the surface to form a dense oxide protective film to prevent the concentrated sulfuric acid from continuing to react with iron.

Only when heated will the reaction of iron and concentrated sulfuric acid accelerate.

The reaction equation is: 2Fe+6H₂SO₄(concentrated)=Fe₂(SO₄)₃+3SO₂↑+6H₂O.

After doing this, Mu Yun ordered to start hunting the corpse tide on the other side.

Not only the corpse tide in the z7 area on the opposite side, but also the corpse tide in other areas, Mu Yun was ready to catch them all.

After a year, the green slaves had already evolved to a certain extent. Even if they did not use vines to defend against the corrosiveness of the black rain, they already had a very strong defense.

This caused the humans who had gradually gained a foothold to be in a disadvantageous position again.

A large number of defensive buildings were destroyed, the water source was directly polluted, and many weak survivors died directly.

In the mess, the power of mankind was sharply reduced.

But in this life, interesting things happened.

Originally, the green tide was followed by an extremely hot natural disaster, but unexpectedly, a black rain suddenly came, which caught everything off guard.

The destruction of the water source in advance will inevitably lead to a crazy increase in the value of drinking water. Even Mu Yun, a reborn person, cannot figure out what interesting stories will happen in the future.

The most important point is that the black rain at this moment can cause terrible damage to the green slaves. This is a perfect opportunity.

There must be a ray of hope in the natural disaster.

Mu Yun saw through the key point of this natural disaster at a glance. If he could take this opportunity to take all the spiritual energy crystal cores in City B, the whole city would be under his control at that time.

Now, this Longbei River is Mu Yun's best way to deal with the tide of green corpses.

"Da Da Da——"

Intensive gunshots continued to sound, and black bullets were shot at the opposite bank like rain.

The purpose was not to kill the green slaves, but to attract more green corpses.

Attracted by the gunshots, a large number of corpses rushed from the other side of the river. For a time, the river was filled with dense corpses.

The corpses were emitting black smoke and gradually decomposed into a pool of black water under the corrosion of dilute sulfuric acid, and merged into the river water.

A strong stench filled the air. Everyone frowned and held back the nausea in their stomachs, firing desperately.

At this moment, everyone had understood Mu Yun's idea. The excitement on their faces could not be concealed at all. They all poured bullets on the other side with all their strength.

As the bodies were decomposed, the crystal clear psychic crystal cores all sank to the bottom of the lake.

As long as the black rain ended, we could find a way to drain the river water... Well, this seems a bit difficult.

But we can send a gold-type psychic like Zhang Lan with the steel-making skill to salvage it. As long as the mind does not slip, there are always more solutions than difficulties.

But there is a problem now, that is, as the rain gets heavier, the originally calm Longbei River gradually begins to flow.

This means that the crystal cores under the water may be washed away by the water.

Mu Yun and Chu Antian are now fully absorbing psychic energy to accelerate the recovery of energy in their bodies.

Twenty minutes later, the two opened their eyes.

"Da Zhuang, you are in charge here. Zhong Li, you should be alert and be careful not to be attacked by Lao Liu." Mu Yun ordered.

"Yes! City Lord!" x2

Mu Yun turned to Chu Antian and said, "Let's go."

Nodding, Chu Antian's defensive golden light enveloped the two of them, and then left Tiebo and walked downstream.

Not too far away, they stopped fifty meters away from the bridge.

"Husband, what are we going to do next?"

"Build a dam."

"Ah?" Chu Antian blinked. What did she hear just now?

Build a dam? !

"Just the two of us?"

Mu Yun shook his head, "To be precise, it's just me."

"This..."

"Don't worry." Mu Yun reached out and patted her shoulder, showing a confident smile, "Your husband is very capable."

Although Chu Antian was still a little worried, she chose to believe Mu Yun. After all, this man had never let her down.

"So what should we do next?" Chu Antian asked.

"Watch me."

As he spoke, Mu Yun's domain expanded again, but this time it only maintained a range of ten meters, which could save the consumption of spiritual energy.

Then, he took out several huge wire meshes, which were used to build large buildings and were poured into the walls for reinforcement.

Previously, he had stockpiled a lot of them in the name of building a shopping mall, enough for Mu Yun to build a huge base city.

Now, for the vast amount of spiritual energy crystal cores, Mu Yun was going to use some of them first.

Several wire meshes of three meters by ten meters were suspended in the air in Mu Yun's domain.

"Lend me your red hot light."

"Uh... You don't want me to be a welder, do you?"

"Smart!" Mu Yun raised a thumb, showing eight white teeth on his face, with a teachable expression.

Chu Antian's mouth twitched slightly, her husband was really a genius.

There was no other way, so Chu Antian had to become a welder, shooting red light at the iron net, sparks flying, very professional.

After a while, the wire mesh was welded into a large iron net of 21 meters by 10 meters by Master Chu.

Then Mu Yun took out six I-shaped steel bars and gave Chu Antian an expression of "you know".

"Alas~"

She sighed and felt a little tired.

"Magnetic-magnetic-"

Under Chu Antian's professional welding, Mu Yun got two 24-meter-long steel bars.

Seeing this, Chu Antian understood.

Without Mu Yun's words, she consciously welded the steel bars to both ends of the wire mesh.

So, a 10-meter-long and 21-meter-high interception iron net was completed.

The next step is the last step.

Mu Yun's absolute domain range was directly opened to the maximum. The depth of Longbei River is 20 meters, and Mu Yun's domain range is 30 meters, which is completely capable of driving the interception iron net into the bottom of the lake.

The extra part of the steel bar is just inserted deep into the ground, fixing the iron net firmly on the bottom of the river.

The extra one meter of the iron net is just exposed on the surface of the river, so that even if the body floating on the river surface will not be washed away.

Longbei River is 50 meters wide, and one net is obviously not enough.

While absorbing the spiritual energy crystal core, the two continued to make the interception iron net.

After great efforts, the task was finally completed.

Five ten-meter-long interception nets were driven into the bottom of the river one by one, successfully blocking the entire river section.

Someone will definitely ask, how did the iron net in the center of the river get into the bottom of the river? The distance of the domain is not enough?

Well...

Mu Yun can fly in the domain, it's that simple.