Humans are aliens to the planet
After 2300 A.D., the rapid development of scientific research led to the discovery of more trace elements, among which the chemical element called "squea" was properly exposed to the air when applied to the study of energy harvesting, reacted with oxygen and spread all over the world, the desert began to rain, and the earth returned to green. However, people gradually found that among all animals, human beings lost the ability to reproduce, and decades of efforts still did not solve the problem, and the number of human beings began to decline sharply, 2411-2445, more than 30 years of war caused the population to further decline, when fate was put on the table, three years of negotiations finally let human beings stop the war, replaced by the disappearance of the kingdom, human beings began to integrate the world's scientific forces to explore ways to continue to reproduce. In 2478, the storage and digitization of human consciousness was realized, and 200 million people gradually realized the transfer of consciousness to mechanical bodies. By 2532, human beings have completely completed the process of biomorphization to mechanical embodiment, and human beings have achieved immortality in a sense, but for human beings, the cry of babies has been gone, skin intimacy, blood and tears are in the past, religion and belief have been covered with dust, birds and lion roars are still there, only human beings have become outsiders to the earth, many people give up immortality, choose to erase data, until one day in 2912, the spacecraft that departed from the Mars transformation program in 2283 returned, A young couple and a child step out of a spaceship that has long since been lost. The mechanical humans looked at the only three remaining living beings, and the meaning of existence began to fluctuate in the brain circuits again.
