Interstellar System in the End Times

The year is 2101, the twelfth year after the nuclear war. Governments are disintegrated, cities are piled up, and civilization is reduced to zero. Lin Yi, the last survivor of Vault No. 7, Activated a system when he was about to die—— It's not a training system, it's not a mall system, it's a StarCraft command system. Scan for mineral sources, construct buildings, upgrade technology trees, and synthesize mechanical units. There is no buying equipment out of thin air, and there is no free lunch. The system gives you a blueprint, and you have to find the materials yourself. Twenty pieces of scrap steel, ten pieces of concrete, and five electronic components - the command center was started. From a person to a city. On top of these ashes, rekindle the fire.