The dungeon plan has finally begun to be in full swing, and engineering teams from all over the world have rushed to the construction sites in various places.

Prepare to build an extremely large human survival dungeon from all directions.

This project is easy to say, but when it actually starts, there will be a lot of problems involved.

First of all, according to the engineering drawings, the underground city will be set up 5,000 meters underground, and it will be built into a large city with a population of more than one million.

Such a large city will be spread across all continents, and the difficulty can be imagined.

The most elite team of engineers from various countries rushed to Daxia and held a discussion meeting overnight.

Through this meeting, they had to solve several crucial issues, which were related to the success of the dungeon.

Topography, engineering geological characteristics of rock and soil mass, hydrogeology, undesirable geological processes, and three-dimensional stratigraphic structure are all matters that need to be discussed and determined in this meeting.

So the meeting had been going on for more than a dozen hours, and all the engineers had no sign of tiredness on their faces, because they knew that they were working on a major plan for the future of humanity.

"If we were to build a dungeon at a depth of five thousand meters underground, the balance of the core in the core would be disturbed.

Its effects pass through the Gutenberg discontinuum and ripple through the leylines of the earth, which is likely to lead to a volcanic eruption of geothermal energy on all continents, which is a fatal danger to human underground cities. ”

"Yes, and at the same time, we are faced with the inevitable global seismic magmatic activity.

Once all the dungeons are built, it is likely that volcanoes will form and erupt at any time.

Therefore, the materials used to build dungeons need to be paid great attention to, and after the comprehensive exploration of our scientific research team, perhaps only the many materials found in the ruins of the civilization on the outer battlefield can achieve this effect. ”

The engineers of the engineering team have expressed their opinions, and it is in this conflict of opinions that a proper treatment plan can finally be formed.

In fact, there have been excavations of underground cities for a long time, and people have found about 36 underground cities in the Turkish region.

Although these cities are small cities, they are enough to show that underground cities did exist a long time ago.

However, there is no precise definition of who built it, when it was built, and what it was used for, and people often have different opinions about this.

It is said that in the early days of Christianity, believers of this nascent religion were recorded to have come to this place in search of a place of refuge and established an underground city to take refuge.

It is also said that when the war broke out in the second century AD, the war-torn people established underground cities in the hope of avoiding the flames of war.

None of these hypotheses have been confirmed, but for now, one lesson can be learned from the fact that the foundation in this area is formed by tuff.

Because there are volcanoes nearby, it is easy to hollow out as long as there is an obsidian foundation.

Therefore, according to the original hypothesis of scientists, perhaps these early underground cities were hollowed out in less than a generation.

Most of these underground cities are three-dimensional buildings with more than thirteen floors, and on the lowest floor, people have even found artifacts from the Shammite era.

Based on this, engineers can also come up with a hypothesis.

Unless it is built in a special place, it will take at least three years for an ordinary foundation to be excavated enough to open up an underground city.

This is undoubtedly an adventure for the planet, which is already short of time.

Everyone needs to risk their lives to gamble on an outcome of the underground city.

After a long discussion, the team of engineers from various countries finally put together a perfect plan.

Underground cities are no longer built by country, but with the twelve immortal palaces as the core.

In this way, only 12 underground cities need to be built with the efforts of the whole country, which is the most time-saving solution for the current earth.

With the mighty engineering team, driving into the range of twelve palaces, it also means that the huge underground city project has officially started.

Rock engineering is not a single excavation can be successful, but needs to be excavated many times to complete, due to the nonlinearity of the rock material, its stress state after stress is also completely different, the soil in each place is different, for the construction team, the degree of difficulty will naturally be different.

So, for all the engineering pairs, their tribulation has just begun.

In Great Xia, the entrance to the underground city was chosen directly below Tianding Mountain.

It will also be the largest underground city in the world, and almost every country in Asia will eventually have to take refuge in this underground city.

The underground city to be built at this time is not the kind of pseudo-underground city used for tourism.

Therefore, scientists also have to consider the issue of energy, after all, the sun is our source of energy, light and heat can also allow plants to photosynthesize, so that animals can keep warm, ultraviolet rays can also kill bacteria, heat can provide water cycle, these are all essential and important factors for human survival.

So the problem for scientists is how to bring enough energy to survive in these underground cities, and the project is named Artificial Sun.

The efforts of all parties made the dungeon plan quickly begin to be implemented, which also made the originally quiet Twelve Immortal Palaces begin to hear the loud sound of construction.

Seven years is just a flick of a finger for the earth, but humanity has to seize this limited time to create more future possibilities for itself.

As a Dao Ancestor, Su Yun naturally learned the news of the upcoming attack of the alien fleet for the first time.

After learning the news, Su Yun stood solemnly on the top of the mountain, overlooking the many cultivators in the zenith dojo below.

It seems that the time has come......

In Su Yun's heart, he secretly made a decision, a huge plan that had taken root in his heart for a long time, and it was time to start implementing it at this time.

During the last retreat, Su Yun was constantly refining this plan, which was to open up a cultivation world.

This cultivation realm is like an independent secret realm that exists on the earth, and generally according to Su Yun's vision, the transcendent aura of this world will be very strong, and anyone can cultivate.

This plan has been in Su Yun's heart for a long time, and he has been perfecting this plan through new perceptions and realms.

According to Su Yun's vision, once the cultivation world is opened, the future of mankind will no longer be illusory.

When Zhao Guofeng learned that Su Yun had a big thing to do, he quickly notified Feng Jiwen, and Feng Jiwen did not hesitate to come to Tianding Mountain to meet Su Yun in person.

Facing Feng Jiwen's doubts, Su Yun asked and said word by word:

"Now that the fate of mankind has come to an end, I also want to bring more hope to mankind to survive.

For a long time, I had a plan in my heart, and that was to open up an independent cultivation world, so that the fate of the entire earth would be different. ”

Feng Jiwen was naturally confused about this, he didn't know what Su Yun meant by the cultivation world.

"You can understand that the cultivation world is like a legendary secret realm, and everyone who enters the cultivation world is like entering a completely new world.

In the world of cultivation, everyone will be able to achieve twice the result with half the effort, and they will no longer be confined to bottlenecks, and everyone will have greater achievements than they would have practiced on Earth.

There are still many mysteries in this cultivation world, but it is still too early to say this.

I need an opportunity, and only by taking this opportunity can I have enough strength to open up the cultivation world, and I need the cooperation of the Twelve Immortal Palaces, as well as the cooperation of various countries. ”

Although Feng Jiwen didn't fully understand what Su Yun was saying, he quickly nodded and looked at Su Yun seriously and said:

"Dao Ancestor, rest assured, as long as you give an order, all countries on the earth will definitely cooperate vigorously!

It's just that I don't know, when does Dao Zu want to create this miracle, and what should we do? ”

Hearing this, Su Yun subconsciously looked back at the villa in the back mountain, and then said slowly:

"Wait, it won't be too long......"

In Su Yun's heart, he was actually worried about Xu Jiajia and a few others.

In less than a month, the children should be born.

Everyone hopes to see Xu Jiajia and the children safe and sound, so that they can give it a go without worry.

The idea of opening up the cultivation world was too risky, and even Su Yun himself didn't know if he would succeed or what kind of risks he would face in the process.

But for the current Earth, he had to try his best.

Human beings need a hope, and the underground city is just a passive refuge for human beings, and the spiritual realm opened up is the infinite possibility that human beings can face many crises in the future.

Watching Su Yun's figure gradually disappear at the end of the mountain road, Feng Jiwen stood on the top of the mountain with his hands behind his back, looking at the moon and stars above his head, he couldn't help but sigh with emotion:

"I hope that humanity can survive this crisis, otherwise our demise will not stir up the slightest reverberation in this vast universe......"

Zhao Guofeng on the side also frowned, and nodded approvingly:

"Do your best, obey the destiny of heaven, not to mention that we still have Dao Ancestor."

As the two of them spoke, they walked down the mountain, where the many dojos were as calm and leisurely as ever.

But this tranquility is more like the calm before the storm.

Seven years, the countdown has officially begun today.

Twenty days later, Chen Jie and the others were the first to be admitted to the hospital, which was in line with the doctors' previous judgment.

Most of Xu Jiajia's delivery time was only a few days apart, so they were sent to the hospital together for recuperation.

The first to be pushed into the delivery room was Chen Jie, who was also the first to be found to be pregnant, and on the expected date of delivery, Chen Jie did have signs of childbirth as scheduled.

Su Yun, who was his father, was waiting in the corridor accompanied by Zhao Guofeng and others.

From beginning to end, Su Yun didn't say a word, staring at the closed door of the delivery room.

"Wow!"

With a loud cry, the extraordinary aura above the hospital gathered here, presenting an extremely special celestial phenomenon.

In the realm of the East, the sky is attacked by clusters of purple gas, presenting an auspicious image.

In the purple qi of the Dao, there was a golden transcendent aura constantly surging in the direction of the hospital.

Like a meteor, it pierces the sky, as if bringing new hope to people.

The purple qi came three thousand miles from the east, adding a touch of fairy energy to the white clouds on a sunny day.

Zixia Wandao, Ruicai Qiantiao, all the foreigners in Daxia looked up in surprise.

The practitioners of the various dojos worship in reverence towards the East.

That is the direction of auspiciousness, and the purple qi coming from the east is an auspicious omen.

In today's format, everyone needs a sense of hope to keep them moving forward.

Su Yun's children have been blessed with auspicious images since they were born, which undoubtedly makes more people firmly believe that Su Yun's heirs will bring new hope to mankind.

Many doctors stood curiously by the window and looked eastward, with happy expressions on their faces.

"Purple Qi from the East is a symbol of auspiciousness, this child came to the world with auspiciousness!"

"The heirs of Dao Ancestors are really extraordinary, and the powerful people will be born differently!"

At the same time, more people noticed that the sky above the hospital was full of colorful clouds, accompanied by golden sunlight, forming a fairyland-like picture.

All the flowers in the hospital suddenly bloomed, as if an invisible force dispelled the mist, and all the hearts of all the people inexplicably gave rise to longing and hope for the future.

Soon, the doctor pushed open the door and walked out, seeing this scene, Su Yun quickly stood up and walked forward.

"Dao Ancestor!"

The doctor said happily:

"The child was born safely, a boy!

This boy is very special, when he is born, he is surrounded by an extraordinary atmosphere, this is an extraordinary son, he will be born, and a virtuous person will have his life! ”

When Su Yun heard this, his hanging heart was put down, and the safety of his mother and son was the best result for him.

Because the delivery period of the four people was relatively close, Su Yun had been staying in the hospital during this time.

When the children are born, there is a sign of purple qi coming from the east.

At the same time, with the children's every move, the transcendent atmosphere gathers one after another, which is very shocking.

Xu Jiajia's production also went smoothly, and then they were transferred to the same ward.

The sky showed a vision, which lasted for a long time, and the purple glow over the hospital stretched for thousands of miles, shocking everyone who saw it.

The dead flowers bloomed on the windowsill in the ward, and these visions were brought about by the birth of children.

Soon after the birth of the child, with Su Yun's consent, Zhao Guofeng immediately contacted the scientists to come and conduct a more detailed examination of the child...... (End of chapter)