I know how to do vector operations when I travel through time and become a girl

It has been many months since the last alien invasion.

City Z has returned to its former prosperity, and the previously destroyed floors have been rebuilt in a very short time.

Clean and tidy streets, buildings erected on top of the city, laughter on the streets...

All the time, all of them reflect the prosperity of Z City.

It was as if the previous riots of foreign races had become a thing of the past.

The original riot turned the originally harmonious suburbs outside the high walls of Z City into ruins.

These crazy aliens have even broken through the walls and wreaked havoc in the bustling city.

Directly turned it into a hell on earth....

Therefore, many soldiers and special energy squads were buried here.

This is arguably the biggest trauma suffered by City Z in recent years, or the entire federation.

It seems that the alien race has receded, but the danger has not been lifted.

It's just that now it's back to its previous calm.

However, this brief period of calm is always just a façade.

The tall walls surrounding Z City are a constant warning to people.

The threat of alien races to humanity has never dissipated.

Even people have never had a clear answer to the motives of the alien invasion.

They came into the world as if they had a purpose.

It's like looking for something.

But what is certain is that its nature is extremely brutal.

It is extremely dangerous to the survival of human beings.

After all, as the saying goes, 'those who are not of my race will have different hearts', and human beings can even defend themselves, let alone cruel and barbaric aliens....

And City Z is humanity's first line of defense.

I saw countless artillery emplacements on the tall and hard city wall.

From time to time, squads of soldiers in combat uniforms passed by between the aisles of the city walls.

However, even such a well-defended city, like a copper wall and iron wall, still has the threat of being breached.

Although it is said that the individual of the foreign race, the general strength is not particularly strong, and it is mainly composed of the second order.

Under the bombardment of the spiritual energy cannon on the high wall, a large area of alien cannon fodder can be drunk to hate the northwest.

But this does not hide its numerical superiority, and it does not include the powerful bosses among them.

Once the defense line of Z City is lost, then the civilians in the city will all die under the fangs of foreign races....

As a result, the tall and strong city wall, and the countless artillery batteries and soldiers on it, became the reliance of people's hearts.

In this world where strength is paramount, the people of Z City seem to admire strength even more.

Everyone hopes to awaken a powerful power, or have a good cultivation talent.

The soldiers of the Federation section were all wearing blue battle robes, and on their collars there was a spirit stone that emitted a colorful light.

Spiritual power is provided by spirit stones, coupled with its special crafting process.

So that the entire battle robe has a good defensive ability.

The soldiers and trade unionists of City Z wore such uniforms to fight.

In their hearts, this robe is a symbol of glory.

It is also an official recognition of your strength.

After all, if you want to become a border guard of the Federation, you can't be a second-order or above strength.

After all, the Federation's requirements for the quality of soldiers are still high.

The second order is tantamount to being difficult for most ordinary people who have poor cultivation talent and no special abilities.

After all, even people with average talent.

If you want to cultivate to the second order, you also need a long time of persistence and hard work.

The first order and the second order can be described as a world apart, and the first order can be regarded as the mastery of spiritual power has just been regarded as the beginning.

The second order can achieve the skillful use of spiritual power and can achieve 'spiritual power release'.

For example, in the first order, you can only knock down a large tree with one blow.

However, after the second order, you can destroy a small piece of forest with one blow.

This is the gap between the ranks, not just in terms of external monetization.

At the same time, the gap between the second order and the first order is far more than that.

For example, the total amount of spiritual power, if the first order is the amount of this small cup.

Then the second order can be regarded as the amount of a large water basin.

Of course, there is also a gap in the purity of spiritual power between the ranks.

This is why, excluding the use of proficiency under the influence.

It is clear that they all use the same amount, but the main reason why the first order cannot beat the second order.

......

At the same time, inside a fort-looking mansion in Z City.

A burly middle-aged uncle was looking at the documents handed over by his subordinates with his brows furrowed.

This middle-aged uncle is the person in charge of the defensive measures of Z City-Dong Tianxiang.

Dong Tianxiang has short black hair and a pair of brown eagle eyes, showing a shining appearance.

Just sitting here, he showed an air of not being angry and self-threatening.

Of course, if he can sit in this position, he must also have extremely strong strength.

That's right, he is one of the few existing Shangjun Realm powerhouses in the world!

That is, the so-called fifth-order powerhouse!

It is said that he did not awaken supernatural powers.

That is, the top powerhouse who has practiced martial arts and cultivated step by step to Dacheng.

After reading the information in his hand, Dong Tianxiang snorted coldly:

"Hmph! Are these aliens really..." "

Are you preparing for a large-scale invasion again?"

Seeing this, the subordinates on the side hurriedly asked,

"Junshang! Do you want to go to Your Honor... Request some assistance? Dong

Tianxiang didn't think about it, so he rejected the proposal.

"Aid? There are enough troops in Z City now!

"Just this group of uncivilized barbarians of the alien race, they still want to take City Z?"

After a pause, he added,

"The Federation is now at war with the fools who don't understand the situation."

"The rest of the forces are used to suppress heresy."

"There are no extra troops to move here."

"Even if you want to, I'm afraid it's not easy to adjust..." Then

he closed his eyes, tapped his fingers on the desktop in an orderly manner, and began to think.

After a while, Dong Tianxiang made a decision.

Turning to his subordinates

, he said, "You go and inform the nearby city lord and let them take protective measures."

"We will guard the heavenly pass!"

"Transfer the army over, and let the people on the technology side have a headache for other things..."

Lord! "

The so-called Tianguan is an extremely long checkpoint around the edge of Z City.

It is an important line of defense used to prevent foreign invasion of the interior of the Federation.

If it is lost, it will usher in the endless slaughter of alien races....

For example, a riot a hundred years ago caused some foreign races to enter the mainland.

Until now, there is still this not a small impact, such as the pagan sect that Little White Mao encountered before....

Seeing that Dong Tianxiang gave the order, his subordinates did not have much to say.

So according to the instructions, the army of Tianguan was transferred to the border pass.

Then he began to inform the other city lords....