Extremely Cold Doomsday: I Can Synthesize a Mobile Fortress!

Global temperatures plummeted to minus 80 degrees, and 90% of people died within the first week. Lin Beichen awakened to the synthesis system of all things - others would freeze to death and starve to death in the apocalypse. He started from a broken bus and synthesized the first mobile fortress that could run. Sounds cool? But the system is not doing charity. Each synthesis consumes his body temperature. He was getting colder and colder, and less and less human. His companions were helping him warm up, but what the system wanted was his whole body. The enemy wants to take him down, and zombies are chasing him. And every time he synthesizes it, he takes a step forward on the inhuman road. In the end, he synthesized a city. But does the man in the city still look like a human being?