The Ultimate Doomsday Master

A strange red mist swept across the world, turning 80% of humans into zombies. The protagonist Lin Yuan relies on his military literacy to survive. When he saves his first important companion (can be set as a technical talent or a doctor), he activates the sleeping "Civilization Fire System" in his body. Initial functions of the system: digitized body, instillation of basic skills, and small-scale map scanning. Build the first temporary safe house.