In 2060, the leak of an unknown virus turned most of the world's population into monsters. When He Huan came to, he discovered that he had become a special kind of infected: he still looked human, and zombies wouldn't attack him. He set out alone to survive and search for his parents. At a shelter, he met Li Tong, a woman in the same situation as him. The two joined forces and searched a ravaged world for a way to become human again...
P.S. This is a pure zombie-apocalypse novel. The protagonist is a half-infected person who retains his human features. No superpowers, no System, no harem, and only one female lead. If that's not your thing, please move along. The protagonist isn't a bleeding heart; he's meticulous and clear-headed. He starts out as a lone wolf, and the female lead appears later.
The story also uses frequent flashbacks.
This is a fictional world. Please don't relate it to real life.
The plot is quite new, but the human-machine feel in the description of the knife is still a bit obvious.