The End of the World: Starting from the Air Gunship

Parallel world. A young man grew up in the apocalypse, got a latest model of the Sun God aerial gunship, and started a wonderful life in the apocalypse. After lighting up the technology tree and meeting the conditions, the air gunship can be upgraded. Air gunship → Air Overlord → Aircraft Carrier → Sky City → Star Ark. (There is already a million-word outline, the main line is clear, and there will be no rambling. Book friends who like this kind of subject please add it to your collection.)