Just Out of Prison, You Told Me That the End of the World Was Coming

System + End of Winter + Construction Base + Special Technology + Alien Invasion + Heading to the Universe An 18-year-old orphan who was sentenced to 10 years for fighting unexpectedly received a smartphone made by an advanced civilization after being released from prison, and was told that the end of the world would come in one year. Being alone, what should he do? Should he find a place to be a dog and become a tortoise, or should he lead mankind through the end of the world? The majestic Furnace City stands on the vast plains, shielding humans from the severe cold. Coal-burning road trains are not afraid of the severe cold and connect the major melting pot cities of mankind. Human beings who should have been struggling in the last days have become more prosperous because of his appearance. Everything was going in a good direction, until one day the arrival of a spaceship broke the peace here. Faced with the invasion of aliens, should he resist bravely or flee alone. When the Titans living deep underground return to the surface and face the former overlord of the earth, what should desperate humans do?