This is what happened in the very distant past.

Exactly how long ago, because of the relationship between the faults in history, there is no way to investigate.

Today's people only know that in order to stop the phantom demons who came from the Chaos Demon Cave to the present world, human beings established Tianfeng City.

In other words, when the Chaos Demon Cave appeared, Tianfeng City had not yet been established.

At that time, it seemed that the world and the spirit demon prison had just come into line. Humans and phantom demons also formally clashed on this land, and a racial war started.

As the entrance to the largest spiritual prison at the time and now, the Chaos Demon Cave was undoubtedly the biggest and deadliest threat to the human world.

In order to resist the phantom demons who came to the world from the Chaos Demon Cave, those who have just acquired extraordinary powers fought valiantly without fear of death.

The final result is that the Chaos Demon Cave was sealed by the forbidden technique. In order to guard this Chaos Demon Cave, humans established the base city of Tianfeng City on the human area closest to the Chaos Demon Cave, so that Tianfeng City gradually became a detached city. Status has become a holy place for mankind.

"At that time, the seal of the Chaos Demon Cave was still intact, and the ghosts of the Spirit Demon Prison could not invade the world through the entrance of the Spirit Demon Prison, the Chaos Demon Cave, and Tianfeng City also entered a period of rapid development. The strong, many family forces."

In front of everyone in the tent, Xu Xiayan began to tell the secret.

"At that time, Tianfeng City was still a feudal country, and the royal family was also built there. As the right arm of the royal family, our royal family has always been escorting the royal family, protecting the royal family and Tianfeng City at the same time. Humans of the dark ages before the seal rested."

It is precisely because of the special status of the Wang family that there are many ancient books in the library of the Wang family that are not found in other clans, and there are many historical records from a long time ago.

Xu Xiayan knew what the history of that period looked like, so she told everyone about it without any confusion.

"If it can continue like this, then human beings will be able to develop and grow in a very short period of time, and Tianfeng City will also have enough power to guard the Chaos Devil's Nest, and throw excess power into the inland to assist other people. Base city, to resist and expel the phantoms on the land."

In that case, perhaps, sooner or later, the phantom demons may be driven out of the earth where human beings live, and either they can only return to the spirit demon prison, or they can only enter the ocean area, otherwise they may only be crusades.

Unfortunately, the good times don't last long.

"In the Spirit Demon Prison, a terrifying existence noticed the present world, noticed the entrance to the Chaos Demon Cave, and launched an invasion of the present world."

That is the king of the spirit and demon prison who once made life on the ground smeared and turned into hell, a person who stood at the pinnacle of the phantom demon race, and has already evolved to the end of the existence——"Terrorist species".

Existing like this is already above hundreds of millions of living beings.

With such existence, it is already beyond the reach of seven-star professionals.

Even in the Spirit Demon Prison, there will never be more than three such beings.

However, it was such a terrifying existence that launched the most terrifying invasion in history.

"It ripped open the seal of the Chaos Demon Nest with its right hand that contained endless power, and devoured the earth with its left hand, which could instantly kill all life, and finally smashed Tianfeng City, which was at the forefront."

"Countless heroes and heroes of mankind gathered together, and countless strong men gathered together to launch a resistance against the "king", but whether it was a direct attack by a high-level spiritual technique, or a sub-artifact-level alchemy weapon pierced through the body, it never After stopping the ravages, with a heart that can continuously repair its body and restore its wounds, with one person's strength, the entire human race was crushed. "

"In the end, human beings can only fight back against the odds, assemble the strongest group of heroes, stop the king of the spirit and demon prison at the border of the mainland, and make great sacrifices, cut off the arms of the "king" with forbidden techniques, and dug out " King's heart, so that it no longer has an invincible body, no longer has endless power, and then successfully sealed it. "

Xu Xiayan said in a deep voice, and looked around at everyone present.

"In this battle alone, the royal family has completely declined, and human beings have also lost many strong men. Although Tianfeng City has been rebuilt, the seal of the Chaos Demon Cave was torn apart once, and there were defects."

This is why there are gaps in the seal of the Chaos Devil's Nest, and there are still many phantoms who have come to the world through the Chaos Devil's Nest over the years.

Even if the seal is barely maintained, blocking the way of those truly powerful beings, making the horror species unable to reproduce the world, and even the nightmare species being difficult to come from the other side of the Chaos Devil's Nest, the Spirit Devil Prison will no longer be able to invade the world on a large scale. Large-scale invasions cannot be done, but small-scale invasions like boiled frogs are always there.

In the past few years, the phantom demons have been coming from the other side of the Chaos Devil's Nest, making the number of phantom devils increase and decrease, barely maintaining a balance. They appeared in succession around Tianfeng City, forming a special area after another.

Now, so many years have passed, and many phantoms who have come to the world have evolved, some have evolved into dangerous species, some have evolved into nightmare species, each occupying one wonderland, and the enclosure is the king.

Although Tianfeng City has always been trying to maintain the seal of the Chaos Devil's Nest, the defects of the seal still cannot be made up, and the gap still exists.

"Some people in the human race have also suggested whether to re-apply the seal, but if you want to use the forbidden-level seal, you must sacrifice a lot of powerhouses who stand at the pinnacle of human beings."

"The existence of that level, even if they are willing to sacrifice, the high-level human beings will not agree."

"Unless it is a last resort and encounters a real crisis, otherwise, the loss of so many powerhouses is only to repair some of the gaps in the seal, and the gains outweigh the losses."

It is rude to say that the powerhouses who stand at the peak of human beings are all the confidence that humans use to fight against the phantom demons. They are real trump cards. Losing one can make the entire human race hurt, let alone. Said it was more than one.

If the seal is completely broken, there is really no way, then you have to reluctantly accept the sacrifice.

But the seal has not been completely broken, but there is only a part of the gap, so it is not worth doing so by human powerhouses.

"So, the top officials of Tianfeng City have to find a way to repair the seal of the Chaos Demon Cave every once in a while, not to completely repair the seal, but to not increase the gap, and don't let more phantoms and the strongest phantoms come. to the present."

"This period is about once every sixty years."

"Every 60 years, Tianfeng City has to repair the seal, that is, to maintain the seal of the Chaos Demon Cave."

Xu Xiayan explained all the reasons here.

"And next year, the sixtieth year of the next maintenance."

In view of this, Tianfeng City has been preparing since this year.

"If you want to repair the seal, you not only need the assistance of the elders of the Warlock Guild to provide technical support, but also need the assistance of many special extraordinary items."

"Some of these extraordinary items are alchemy props, and some are heaven and earth treasures."

"Alchemy props are easy to handle. This is not the first time Tianfeng City has carried out the maintenance of the seal. All the props used in the past have been kept."

But some special treasures are more difficult to handle.

"These treasures of heaven and earth are all extremely precious and rare things."

"Even in such a huge treasure trove of resources as Tianfeng City, some of them don't even have inventory, and they need to be searched again, and at the worst, a substitute must be found."

"To this end, Tianfeng City has actually prepared a lot of commissions, some of which are entrusted to some big families, some to some big forces, and some...to some big teams."

Xu Xiayan's words, when it comes to this, are already very clear and easy to understand.

"That is to say, Captain Xu's 'Summer Chasing Smoke' received such a commission, right?"

Qiao Liang looked at Xu Xiayan and said so.

"That's right." Xu Xiayan smiled slightly and said, "This is the origin of our SS-level mission and what we will do next."

According to Xu Xiayan, among the commissions issued by Tianfeng City, some only have B grades, some have S grades, but only a few can reach SS grades.

"Summer Chasing Smoke" was one of the few SS-level missions.

"Among the extraordinary items needed to repair the seal, there is an extremely rare and precious treasure."

With that said, Xu Xiayan stood up and operated a few times on the screen built in the deepest part of the tent, causing the screen to display an image.

It was a three-dimensional outline drawing of a treasure.

"Wire?"

Zhu Qian murmured in surprise.

Yes.

The treasures that appeared on the screen were very thin threads.

The silk thread is like a dream, like an insubstantial light, floating gently like flowing water.

Looking at the golden streamer-like threads on the screen, everyone started talking.

"What a beautiful treasure..."

"What line is this?"

"It looks like the sunlight has condensed into thin threads, look good."

"On the basis of this appearance, even if it is not a treasure, there are countless people willing to spend a lot of money to buy it to appreciate and collect it?"

The crowd was so impressed.

Even Chi Qian couldn't help but take a few more glances, and there was a faint glow in his eyes, which made Su Ming wonder whether to laugh or cry.

Xu Xiayan seemed to have expected everyone's reaction, smiled and began to introduce.

"Golden Silk Dream Demon Thread, an extremely rare heaven and earth treasure, looks like a stream of tiny threads condensed by sunlight, but it is only extremely magical and can't be seen all year round. It only grows in a dark place with a little light."

Xu Xiayan manipulated the screen again, so that introductory text appeared around the image of the treasure.

"This kind of golden silk dream demon thread not only has strict requirements on the environment in which it is bred, but it will only be born in ten years. It is not until a hundred years have passed and a full ten silk threads are born, this treasure can be regarded as formed."

In a word, this is a treasure that is only born once in a hundred years. It is conceivable how precious and rare it is.

Perhaps, even compared with Dragon Demon Saliva and Zixue Ju, this Golden Silk Dream Demon thread is a priceless treasure of the same level.

"Its function is also very simple. It can be used to make battle clothes, alchemical armor, and some alchemical weapons, such as the love bow of the young master of the Zhang family. The bow string of that bow is said to be made of a It is made from a thread-like treasure similar to the Golden Silk Dream Thread, but it is not as rare and precious as the Golden Silk Dream Demon Thread."

"In addition, some top-grade or even divine-grade alchemy potions may also use it as the main ingredient."

"It has a wide range of functions, so it is also very valuable. It is a precious alchemy material that countless alchemists can't ask for."

"Five Dynasties Rivers, Mountains, Wind and Moon"

Xu Xiayan's explanation can be said to be quite detailed and easy to understand, allowing people to immediately understand the preciousness and speciality of this golden thread.

certainly...

"For Tianfeng City, the Golden Silk Dream Demon thread also has an important function, that is, it is used to cooperate with the warlocks of the Warlock Guild to spiritually mend the gaps sealed in the Chaos Demon Cave, and fill in some of the gaps. , or make it stop expanding."

After saying this, Xu Xiayan looked around at everyone present again.

"For this reason, I will organize everyone to enter the polar night labyrinth and come to the tenth floor."

What it means, it is clear at a glance.

"So it is." Chi Qian whispered: "Is the Golden Silk Dream Demon Line on the tenth floor of this Extreme Night Labyrinth?"

"Yes." Xu Xiayan nodded heavily and said, "The environment on the tenth floor of the polar night maze is one of the few places in the world that can meet the conditions for the birth of the Golden Silk Dream Demon Line."

This is the result obtained by the relevant departments of Tianfeng City after rigorous and complex calculations.

They thought that on the tenth floor of this polar night labyrinth, the possibility of the golden thread dream demon line appearing is very high.

Therefore, they handed over the SS-level entrustment to "Summer Chasing Smoke", and let "Summer Chasing Smoke", an A-level team with the strength of an S-level team, enter the polar night labyrinth and search for the Golden Silk Dream Demon Line. .

But...

"If you just come to the tenth floor to find treasures, then you don't need to hire so many powerful teams to assist you in "Summer Chasing Smoke", right?"

"I think so too."

Qiao Zhi and Zhu Yun, the second leaders of the two A-level teams, both expressed their thoughts.

They were right.

Just looking for a treasure, Xu Xiayan's team is completely competent, why bother to hire so many teams to assist?

Even if manpower was needed, it wouldn't be enough to find teams like "Jinlong Jade Pavilion" and "Iron Rose".

Xu Xiayan gathered combat power like this, and if she didn't use it for battle, it was simply a waste of time.

The same is true.

"It would be nice if it were that simple."

Xu Xiayan sighed.

"Don't you realize that the tenth floor is different from the previous floors, and you haven't even seen a phantom?"

Hearing this, everyone was stunned.

"really..."

Su Ming narrowed his eyes and secretly said in his heart.