Tall bookshelves appeared in front of her. Different from other places, where the girl is standing now, the books on the bookshelf in front of her are not as numerous as they were when she came all the way before, in the middle fifth layer of the bookshelf, in the long bookshelf compartment, there is only a lone book, the book is small and delicate, not like the heaviness of other civilizations seen when she came.

The girl gestured to the book that had been placed there. "Found it."

She stood on tiptoe and touched the book with her fingertips, and it seemed to take a great deal of effort for her to get it off the shelf.

The cover is a deep dark blue. She handed the book to Nan Qiyun.

"After the page numbers recorded in your time, there will be a few blank pages, and the rest of the page will be about your future, so don't read any further." The girl reminded Nan Qiyun and the four of them.

"This records the entire process from the beginning of the appearance of the Blue Star to the end of its demise. Anything that is relevant to you will be presented on it. ”

Nan Qiyun looked at the book in his hand that wrote about the past and future of the earth, and he couldn't help but feel a deep sense of heaviness in his hand, the development history of 4.6 billion years was only condensed into an exquisite book. He secretly sighed that the civilization of the earth has gone through such a long road, and the development process has grown from scratch, from the trough to the glory, and the waves are magnificent, but even so, compared with most civilizations in this cosmic space, the level and level represented by the earth's civilization are so insignificant.

Nan Qiyun slowly opened the cover of the book, and the text quickly changed on the blank page, and finally showed the Chinese characters he was familiar with.

The font is not very large, but it is clearly recognizable, and the small fonts are neatly arranged on the page.

Page 1.

4.6 billion years ago, the early Earth was formed and entered the Pact period.

The gaze of the four Nan Qiyun was fixed in the lower left corner of the original text. At the same time as the formation of the earth, the "black spirits" with independent consciousness appeared, and quickly became the early rulers of the earth.

Life appeared on the earth as early as the initial stage of formation, and it also has considerable intelligence.

In the surprised gaze of the four, the recorded time slowly jumped to the Mesozoic.

During this interval of more than 4 billion years, the wisdom of the "black spirit" slowly developed to a higher level, and the earliest civilization on earth was formed during the Archean period, about 3.8 billion years ago. Civilization grew on its own, and the Black Spirit eventually became the ruler of the early Earth. In the violent geological movements of the earth in the following periods, the fragility of the life of the "black spirit" was gradually exposed, which caused the entire civilization to suffer a near-devastating blow, and the "black spirit" civilization appeared at a low point.

In the process of fighting against the harsh environment for a long time, the "black spirit" has not died out as quickly as other life, and its civilization can always survive in an extremely difficult environment, at the same time, the scientific and technological level of the "black spirit" civilization has slowly accumulated in the past four billion years, and the scientific and technological level has reached an unprecedented height. Through a long period of hard work, the civilization has completed the genetic transformation of the entire life of the "black spirit".

In the long-term research, the "black spirit" found a huge defect in its own body shape, and compared all life forms and survival capabilities in the same period and different periods on the earth, and finally concluded that the "black spirit" was limited by its own body, which led to the fragility of various survival functions, making it impossible to better resist natural environmental disasters.

During this period, huge reptiles began to evolve from the ocean to the land, and the "Black Spirit" noticed the great ability of these reptiles to survive, believing that this was the most suitable life form for the earth's living environment.

Therefore, after the final research direction was determined and the expected results were achieved, the "black spirit" abandoned the original body shell and revealed itself in the environment with a more fragile black gaseous substance. However, this gives the "Black Spirit" the ability to replicate other life forms outside of life, and as long as there is no conflict in the genetic lock, then the "Black Spirit" itself can replace the duplicated body.

They set their sights on early reptiles, and since reptiles have a very low level of intelligence and are not fully autonomous, the "black spirits" can easily control most of the reptilian life that lives on Earth.

The existence of reptiles was soon completely replaced, and all kinds of highly intelligent life with huge bodies appeared on the earth, and in the following tens of millions of years, the "black spirits" enjoyed the strong vitality brought to them by the huge size, and the development of civilization reached a climactic stage, during which the "black spirits" completed a comprehensive exploration of the sea, land, and sky, except for their own factors The research field does not involve the space level, and has reached a peak in other aspects, "black spirits" Able to explore any area of the earth through the powerful science and technology of civilization.

In order to show the strength of the civilization, the rulers of the "Black Spirit" spent huge resources and materials, and blasted out a huge abyss of more than 30,000 meters in the eastern sea of the ancient Pacific Ocean at that time, that is, the sea near the Mariana Islands on the F floor of the era of human edifice.

They believe that their civilization has reached a stage of perfection.

But a catastrophe at the end of the Mesozoic Era changed their minds. This catastrophe has a proper term in human academic circles, the mass extinction at the end of the Mesozoic Era.

When an asteroid with a diameter of tens of kilometers passed through the solar system, it was eventually attracted by the gravitational attraction of the earth, and crashed straight into the earth's surface.

The powerful shock wave of the impact first swept across the globe, and then the explosion caused a huge cloud of dust that obscured the sky, and the temperature of the environment dropped sharply, entering a period of extreme cold.

This impact and a series of subsequent bad effects made most of the life on the earth at the same time completely wiped out, at this time as a reptile to live on the earth of the "black spirit" civilization bear the brunt, the impact and injury, in any previous disaster is unique, most of the "black spirit" in an instant in the impact lost their lives, after the harsh environment, "black spirit" experienced the harm caused by the huge body, due to the harsh environment, so that food has become unprecedentedly scarce, Synthetic food could not meet the needs of most of the lives scattered around the world in the short term, and many scientific researchers who had made significant contributions to the field of science and technology died in the disaster, which put the "Black Spirit" civilization in an embarrassing situation.

In order to preserve civilization, the rulers of the "Black Spirit" used cloning technology to copy a large number of "Black Spirit" genes, created a large number of "Black Spirit" clones in a short period of time, and sent these fragile clones to the abyss building along with a small number of "Black Spirit" lives that had not been assimilated into the shape of reptiles, and used the protection of the ocean to protect these clones from the interference of the harsh environment of the outside world.

The survivors observed the changes in the outside world in the abyss, and this major cataclysmic event caused them to change their perception of reptiles, and the huge size did not depend on the strength of survivability, and they began to look for more suitable life forms. In the tens of millions of years that followed, they were intrigued by the emergence of mammals, and although most mammals were short in stature and not as powerful as Mesozoic reptiles, their high intelligence and flexible adaptability were what the "black spirits" needed.

Day after day, the Black Spirits' group in the abyss grew in the hope of returning to the surface and regaining dominion over the Earth. At the same time, the emergence of early primates began to have a clear goal, and in the process of continuous evolution of primates, they had a premonition for the first time that there would be advanced intelligent life like them on this planet, and they were amazed by the superiority of primates' physical coordination and various functions.

Because of the fragility of their own groups, and the difficulty of rebuilding civilization. They have a brand new idea, and they plan to replace them after waiting for a new civilization to rise on Earth, after completing the reconstruction and development of Earth, while a new civilization has reached its peak and is thriving.

So they waited quietly for millions of years in this endless dark abyss, until the emergence of modern Homo sapiens, and then the establishment of the earliest human civilization. Human civilization has entered a golden age of rapid development since the Stone Age. In order to ensure that the trend of human civilization and the specific situation are always grasped, the "black spirit" began to infiltrate the human world to varying degrees, and the "black spirit" was active in the long history as a human being.

Nan Qiyun saw many pivotal figures in the history of human development from the list of these "black spirits" of human identity.