Global Cataclysm: Can My Base Be Upgraded?

Global black fog descended, and urban order collapsed within twelve hours. Construction engineer Lin Mo did not awaken a powerful combat ability, but was bound to the "Doomsday City System". Starting from an abandoned underground parking lot, he repaired water, supplied electricity, built walls, recruited people, built factories, defended the city, and finally built a new world for survivors on the ruins of the old civilization.