The author of "Star Queen Reborn" is very specific about the background of the future era, and the story takes place about 20,000 years after the 21st century. In the 22nd century of the Anthropocene, the center of the Milky Way suddenly had an accident, the gravitational pull of the center increased exponentially, and the black hole devoured the surrounding stars like a troll. This phenomenon was accurately observed by astronomers, and the prediction of the end of the world was once again circulated around the world.

When the world fell into the whirlpool of panic, governments around the world stepped up their centralization, stopped all cultural entertainment and infrastructure construction, vigorously developed science and technology for the whole people, and finally gathered human wisdom to build a spaceship that could escape the solar system 20 years later, so human beings began to wander in the universe in a hurry. After all kinds of hardships, 10,000 years ago, a relatively quiet star field was discovered, at that time, human science and technology made rapid progress in the long-term wandering, such as hyperspace jump flight, super intelligence, mecha weapons, biological organ cloning, etc., in 10,000 years, human beings recuperated, occupied tens of thousands of galaxies around them, and established a perfect ruling system, collectively known as the Federal Empire, with the highest authority being the parliament and the president.

The federal government divides the planet into one to nine classes based on various factors, and re-ranks them every hundred years according to the development of the planet, and the treatment of different levels of planets is different, with the first class star being the best and the ninth class being the second, but the economic level has improved, and the treatment gap between different level planets has narrowed, and citizens have hardly felt the difference in other aspects except for the complicated approval process required for cross-planetary level immigration.

After 20,000 years of cosmic evolution, human beings can no longer be regarded as the definition of human beings in the ancient sense, their average lifespan can reach more than 300 years, and the law stipulates that they can only be considered adults when they are 30 years old, with an average height of 1.8 meters, and their bodies are stronger, and they also derive mental powers. Every Federation human has the potential to become a warrior, and they have cultivated physical skills and mental power since childhood to improve their combat effectiveness.

The physical fitness level is divided into eight levels: F, E, D, C, B, A, S, SS, and SSS, and no one has surpassed the 3S level so far. Genes determine the physical fitness level and physical potential of each person born, and the detection is the most accurate within three days after birth, so the Federation requires all newborn babies to be compulsorily tested, but there have been several incidents of genius deaths above the S level, the Federation will list the test results as SSS level secrets, only the federal mastermind, myself and guardians are allowed to know, and human beings can fully understand this provision. Of course, this regulation does not restrict certain institutions and families with access to the high-level mastermind, but as long as it is not in their interests, who cares about other people's children.

The level of mental power is divided into eight levels: F, E, D, C, B, A, S, SS, and SSS, and no one has surpassed the 3S level so far. Psychic essence is a special kind of brain electromagnetic wave, which is mainly used to control and interfere with space weapons, mecha weapons, and all weapons that require psychic control, and cannot be directly used for human attacks. The higher the level of mental power, the more active the human brain cells and tissues, the stronger the ability to analyze and judge, memory, logic, etc., in layman's terms, the higher the level of mental power, the smarter the person, there was once a 3S-level master The calculation speed can be on par with the intelligent computer, and the mental power is considered by human beings to be the channel for the evolution of ordinary people to intelligent people, so special attention is paid to the improvement of mental power. It's a pity that the improvement of mental power is a hundred times more difficult than physical fitness, unless the talent is against the sky, it is difficult for ordinary people to reach the potential value in their lifetime, and the Federation has not yet developed a medicine that directly improves mental power.

Genetic technology engineers have developed a variety of genetic modification agents, which can improve any gene in the human body, and have a very good therapeutic effect on certain physical defects. Unfortunately, such advanced technology is forbidden to be promoted on a large scale, because statistics show that the offspring of the use of genetic improvers not only cannot inherit the improved good genes, but prolongs the time of human evolution. Later, the federal genetic engineers had to choose a more gentle treatment, so the genetic potential development agent and a series of nutritional modifiers were born.

Of course, the era of peaceful development did not last long, a thousand years ago, a group of highly fertile races appeared on the border of the Federal Empire - the Zerg, which tried in vain to occupy human territory, breaking the rare peace of mankind, and the tug-of-war between the two races has continued to this day.