The Last One to Bleed

In AD 2157, humans no longer bleed. The nano-repair system is implanted in every newborn, and the wound heals in three seconds, making pain a historical term. Women were optimized and eliminated fifty years ago - the incubator system estimates that removing gender can increase labor efficiency by 47%. New humans are decoded in batches from biological reaction chambers, and they are adults as soon as they leave the factory, painless, bloodless, and motherless. Ye Chen, a mountaineer at the end of the 21st century, was swallowed by an avalanche on the east slope of Mount Everest. When he opened his eyes again, his watch stopped at 2046, and outside the window was the suspended city rail and the shadowless sun. He slit his wrist and the whole city was alerted. The gene traceability system shows that Ye Chen, whose thalassemia gene has not been repaired by CRISPR, carries mitochondrial Eve haplogroup L0, was conceived naturally, and gave birth naturally, with intact pain nerves. Robot Zero is ordered to approach him. Model R-X7, an obstetrical experimental body, can theoretically complete embryo implantation. But she opened the cover on her chest, and the inner wall was engraved with the handwriting of her predecessor before the experiment was deleted: "Daughter, daddy can't let you be a human being." Meng Yao is the last natural woman. She hides underground and does not need love. She needs Ye Chen's Y chromosome - not to be a mother, but to give a species the right to choose to be extinct again. The incubator system gave Ye Chen three options: donation, specimen, and destruction. He chose number four. Two thousand years later, a male body was dug out of the ice on Mount Everest. The autopsy report concluded: "He is the last one to bleed. After he dies, we will no longer feel pain." But he died in 5000 AD. When the blood was dug out, it was still hot.