By the north wall, at the sea.

Qi Yi and his wife have been here for a while, and they have just become familiar with the situation on the north wall.

As the name suggests, the north wall is actually a towering city wall at the northern border of the Mohai Sea.

Built 1,400 years ago by the Terrans to defend against demons.

The north wall runs from west to east, from the Dead Ash Mountains in the west to the extremely cold snowfields in the east.

From west to east, the front stretched for nearly four thousand miles.

These four thousand miles were guarded by the Western Qin, Yin and Yang Dao, the Mohai Imperial Family, the Northern Luo Clan, the Qi Sect and the people of Mohai who committed capital crimes.

In the past, there was still the Chu family of Eastern Chu, but since the ancestor of the Chu family died in battle more than a thousand years ago, the Chu family withdrew its troops, and no one has come so far.

In the past two decades, Western Qin has also stopped sending talent to the north.

As for the reason, it is that the beast tide led westward, and everyone knows it up and down the north wall.

The north wall is extremely high, nearly 100 zhang, and the general birds are not allowed to cross, and only the high-level demon birds can cross it.

The entire wall is made of geocentric iron.

The geocentric yuan iron production mine is located in the Beiluo Plain, with a depth of 30,000 meters.

This strange metal is extremely dense, and those who are not cultivators who are at least True Nine Realm Fire cultivators and want to cultivate Divine Fire cannot refine it.

The Earth's Core Yuan Iron is classified as one of the spiritual objects of heaven and earth, and most of the weapons of the people guarding the sea on the north wall are of this kind of metal.

But now, because of over-exploitation in the past, the 4,000-mile city wall has exhausted the mine.

Up to now, the geocentric yuan iron has been a rare item, and it is a strange commodity to live in.

The north wall is made of countless pieces of geocentric iron, and the blocks are locked into the shape of mortise and tenon.

Every misplaced point on it is protected by thousands of formations.

The so-called misalignment point is the only place where the mortise and tenon joints can be drawn out first in order.

There are four such places in total, and they are guarded by four of the strongest people of the human race.

The four node formations are interlocking, and the power impact is transmitted layer by layer.

In the end, the impact of the four thousand miles of the north wall, any city wall, any node, will be transmitted to the same node.

This place is, Reverse Streamer.

Since the completion of the construction of the 4,000-mile north wall, the first emperor has been sitting on the reverse stream for more than a thousand years, not moving an inch.

The first emperor once said: "If the non-emperor dies, the reverse flow will always be there." ”

It means that unless he dies, the reverse stream will always stand between the human race and the demon race, becoming a barrier to protect the human race.

Indestructible.

On the south side of the north wall, next to the wall, are the people of Beiluo.

The people of the north wall, the settlements are distributed, each into a city.

Not counting the small cities with a population of hundreds of thousands, there are seven large cities, from west to east, all of which are stationed against the wall.

It stands to reason that the closer you get to the north wall, the more dangerous it is.

The human race is also a race that seeks advantages and avoids disadvantages, why does this phenomenon occur?

In fact, it is really helpless to have this distribution, the prosperity of a city needs manpower, most of the monks and immortals are sea guards, and the battle between the human race and the demon race may occur at any time, so the city has to go with the people.

This is also an inevitable choice.

Those born in Beiluo, if they are not willing to go south, then there is only one way to go north.

After all, at the feet of the Son of Heaven, all the materials and treasures of heaven and earth are the most abundant, and the top combat power of the human race is here, so that they can grow up in the shortest time and have the strength to protect themselves.

The so-called self-protection is at least the upper three realms.

In another place, sparsely populated and lacking in resources, there is no other possibility when mortals die of old age after living a lifetime, or when monks die in mediocrity all the way.

It sounds like the north wall is broken, and they who live by the north wall bear the brunt.

Not really.

If the north wall is really broken, they may rely on the wall of the north wall, and they still have a glimmer of life.

Because, for the impregnability of the north wall, the royal family has been exhausted for more than a thousand years.

For more than a thousand years, the north wall is no longer the original one, but the north wall of the geocentric elemental iron.

Today, a thousand years later, traces of formations can be seen everywhere on the north wall, and any formation can resist the full force of the ninth-order demon beast.

This kind of treatment is not something that can be found in the hinterland of Mohai.

Looking at its entire Mohai, the imperial city has a large array of city protection, worship the gods and wait for the nine mountains and eighteen rely on the large array of protecting the sect, and then the Chu family may have a large array of mountain protection, in fact, there should be no large array with a defense level of the mortal level.

Including Qi Yimen, Qin Shu, and the orphan, Yin and Yang Dao.

It costs a lot of money to maintain the attrition of the large array.

As for how many people, there are so many days!

Even the Qi Sect, in order to save money, directly gave up protecting the sect and did not set up a large array.

As for the north wall really broken, on that day, in the face of the beast tide, those who have nothing to rely on in the distance really have only one choice: escape.

If those hungry demon beasts couldn't run from the north wall to the sword abyss, no one would believe it.

Not every city has the financial resources to operate the city protection array, and not every city protection array has the ability to resist the ferocious beast tide.

In the same realm, most people can't outrun the beast.

And, just as it is useless to kill a beast in the midst of a tide of millions of monsters, it is useless for one person in a group of millions of living people to run away.

This is the saddest reality.

Demon beasts and people are exchanged, and the loss will always be human.

The Terrans can't afford to change it.

Demon beasts' ability to reproduce is far better than that of humans, and they don't need to do anything else on weekdays except for eating, drinking, and trying to live.

With abundant resources, the growth rate is also surprisingly fast.

In this case, the sea keepers have only one way left to maintain the balance between the shemale races.

That is to pick up a butcher's knife and kill.

Keep killing, keep killing.

The demon clan went south to kill as many as they wanted.

All these reasons have formed the current situation of Mohai in which the north wall is strong and the hinterland is weak.

After the aborigines of the Beiluo Plain experienced the first southward movement of some people, the rest of the people continued to lean towards the north wall little by little in the following thousand years, and really depended on the survival of the north wall.

Today, most of the Beiluo Plain has been swallowed up by the Changsheng Forest and is part of the Changsheng Forest.

A large section of the plain south of Luoshui and north of the imperial city is basically uninhabited.

There are only a few scattered monks in the area between the north wall and Luoshui.

These monks were so weak that they couldn't even get through the Luoshui, and they couldn't go south, so they could only go north.

Just when Hachiasa was still immersed in his thoughts, a beast attack was ushered in by the north wall.

A shocking beast attack happened right under the noses of Qi Yi and his wife.

At that time, Qi Yiyi and the three of them had not long been settled, and they were receiving the blessings of the elders and sages in the attic where Qi Yimen was stationed.

At this time, there were some seniors and brothers who came here from the same family gathered in the attic, plus a few old people, and then counting Qi Yi, there were a total of thirty-two white-clothed scholars, including four women.

This is all the elites in the Qi Sect, all of them are mortal realms, and there are even many of them who are true nine realms.

As for the disciples of other realms, well, that's too much, and this attic can't fit it.

Blessing is a blessing that everyone who comes here must receive, which is equivalent to receiving the wind and washing the dust, but this is not allowed to be refused.