Zhang Zifan regretted a little, he was a little greedy when he was in the yard.

This damn god sealing system doesn't have a one-click killing function, otherwise you wouldn't have to bother yourself like this.

I don't know if I don't want to kill or what, Zhang Zifan searched for a long time, but only found a space shielding function.

In other words, the system can only shield this acre of land, and cannot kill the original creatures.

Getting rid of all the insects in the entire yard is a huge project for Zhang Zifan.

But there is no way, I am just a chicken raiser, there is no horse boy to help me work, and even there are not many chickens, so I can only do it myself.

Fortunately, as a half-martial arts practitioner, Zhang Zifan's strength is much greater than in his previous life.

On the first day, he turned on the system's shielding function.

An invisible energy film quietly appeared, from ten meters above the small courtyard to one meter underground, forming a confined space.

Then Zhang Zifan began to remove insects.

He first checked all the snakes and rats in the entire yard.

It is first fumigated with poisonous smoke and then flooded with boiling water.

Due to the isolation of the energy membrane, the back road prepared by snakes, insects, rats and ants was completely cut off.

Under Zhang Zifan's relentless offensive, they either died of poisoning, or escaped and were shot to death by Zhang Zifan with a shovel.

After ensuring that all the snakes and insects were killed, Zhang Zifan finally sealed the entrance of the cave with earth and stones.

The next day, Zhang Zifan began to cut down trees.

There are two trees in Zhang Zifan's small yard.

One is a jujube tree, and the other is also a jujube tree.

Originally, he had nothing to do, watering the jujube tree with the urine of a child, and when the jujube was ripe, he ate a few in return, which was also one of the few pleasures in Zhang Zifan's life.

It's a pity that now there are countless insects and ants attached to this jujube tree, which is simply a hotbed for "giant beasts in the wilderness".

Zhang Zifan could only destroy the dates with his hands and cut them off.

On the third day, Zhang Zifan began to turn over the soil.

Bugs lay eggs in the soil, and if they are not fried in a large pot, it will not take long for them to flourish again.

Zhang Zifan only demarcated the underground depth of this world by one meter, just so that he didn't have to stir up too much soil.

Even so, with Zhang Zifan's cultivation of the Outer Bone Realm, it took two days to stir up the soil of the entire courtyard.

On the fifth day, Zhang Zifan looked at the monotonous and dead courtyard and frowned.

From the very beginning, he felt that there was no water in this fairy world, and no matter how he looked at it, there was no aura.

So, he dug out two shallow bays from the northwest to the southeast of the yard, and poured boiling water into them after doing a good job of seepage prevention.

In this way, from the northeast to the southwest, there are three pathways.

Zhang Zifan held his chin, looked at the upper, middle and lower three roads, and fell into a moment of contemplation.

Then, according to his memory, he dug a bay in the upper and lower waters.

In the four wild areas, clay and stone were used to build continuous mountains, and the land that was originally flat became clearly divided.

Three Wolves Area, Six Birds Area, Red Daddy Area...... also appeared one by one.

On the sixth day, in the name of expanding the chicken farm, Zhang Zifan went to the construction steward to get some bricks, stones, and iron nails.

After disinfecting them, Zhang Zifan built a piece of high ground in the northeast and southwest and built a spring pool.

In front of the pool of spring water, use an upside-down medicine bottle as a crystal.

And he stuck iron nails in various places as defensive towers.

In this way, a rough summoner canyon appeared in Zhang Zifan's backyard.

Looking at this familiar picture, Zhang Zifan showed a satisfied smile.

On the seventh day, Zhang Zifan slept beautifully until the sun was high, and he stretched his waist to get up.

Looking at the calendar, today is the day of the King of the Chicken Championship.

But the last chicken I raised yesterday has become chicken wings.

It's a pity that he died before he got out of the school, which made the hero cry.

Zhang Zifan couldn't help sighing.

This is not the sin of the chicken keepers, the sin is that the chicken is too delicious.

I don't know if the time comes to report that the chicken coop has entered the weasel, will the chief steward believe it?

Without thinking about these tangled things, Zhang Zifan came to the courtyard and picked up the glass bottle that was holding the ghost Taoist.

The ghost Taoist is already in a trance, but his physical condition is okay.

After all, as a quasi-immortal who has already ascended, there is no problem in starving for seven days.

Zhang Zifan was about to uncork the bottle and let him out, when he suddenly felt a little dizzy.

As soon as I looked at the system, there was a red exclamation mark flashing next to the map of the fairy world.

There is a note after the exclamation point: there is not enough oxygen.

Zhang Zifan hurriedly ran out of the yard.

The moment he left the energy membrane, the fresh air penetrated into his nose, and he felt that he was alive again.

"I completely shielded the yard space and stripped out all living things, including plants and trees, so that there was no source of oxygen in this space. ”

"I was working in the yard a few days ago, and I had almost used up the oxygen, so when I went in again today, I would feel like I was deprived of oxygen. ”

"Small creatures like the Onidorians may not be affected much, but I can't tolerate such a low-oxygen environment anymore. ”

Analyzing the situation clearly, Zhang Zifan was in a dilemma.

Do you want to revoke the blocking function?

If you do that, the oxygen level will definitely return to its original level in an instant.

But spores, flying insects and other things in the air will definitely pollute the yard instantly.

What to do?

Zhang Zifan opened the system panel and began to look for a solution.

Ten minutes later, he had an idea.

Time acceleration, which is one of the functions of the system.

It's like watching some videos and you often use the fast-forward feature when you want to skip it, but you're worried about missing something.

The system allows the flow of time in this world to flow faster.

If there is no oxygen, then it is enough to evolve organisms that can make oxygen.

Many people think that the oxygen on Earth is produced by plants.

The Amazon rainforest is known as the lungs of the earth.

It seems that a lot of credit has been given.

But in reality, plants have both photosynthesis to produce oxygen and oxygen-consuming respiration.

For large trees, the amount of oxygen produced and consumed is almost the same.

So, what really supports the world's oxygen supply is something like cyanobacteria, which looks insignificant.

After turning on the 100 million times acceleration, Zhang Zifan put the glass bottle containing the ghost Taoist on the ground.

I sat in a rocking chair and waited quietly.

The first birth of life is long.

But the courtyard has plenty of water and a stable atmosphere, which is much more ideal than the environment on the primitive earth, which is full of toxic gases.

As Zhang Zifan expected, just two hours later, the first creature appeared in the river in the lower half of the river.

But......

Zhang Zifan found that things did not develop in the direction he expected.

............

............