The rapid development of scientific research after 2300 AD led to the discovery of more trace elements. Among them, the chemical element called "shackle" was improperly exposed to the air when used in energy harvesting research. It reacted with oxygen elements and spread all over the world. Deserts began to rain, and the earth returned to green. However, people gradually discovered that among all animals, humans had lost their ability to reproduce. Decades of efforts have not solved the problem, and the number of humans began to decline sharply. From 2411 to 2445, more than 30 years of war contributed to a further sharp decline in the population. When fate was put on the negotiating table, three years of negotiations finally allowed humans to stop the war. Instead, the country disappeared, and humans began to integrate the scientific power of the world to explore ways to continue to reproduce. In 2478, the digitalization of human consciousness storage was realized, and 200 million people gradually realized the transfer of consciousness to mechanical bodies. By 2532, mankind has completely completed the process of turning from biology to mechanization. In a sense, mankind has achieved immortality. However, for mankind, the cry of babies has gone far away. Skin care, bloodshed and tears are a thing of the past. Religion and belief have become dusty. The roars of birds and lions are still there, but humans have become alien visitors to the earth. Many people give up immortality and choose to erase data. Until one day in 2912, the spacecraft departing from the Mars terraformation plan in 2283 came back. A young couple and a child walked out of the spacecraft that had long been lost. The mechanical humans looked at the three remaining living beings, and the meaning of survival began to fluctuate in the brain circuits again.
Intention: Human beings have no choice but to abandon their hearts and let their souls live forever. When their hearts bloom again, what choice does the soul make?