Extreme Cold and Light

In the third year of the global freeze, Xiao Ma pushed open a fire door in an abandoned power plant. Behind the door was the same power plant, but the temperature had dropped to minus 51 degrees below zero. What's even more troublesome is that the "pony" in this world was buried in the snow just three days ago. He was dragged out of the factory as a dead man, but with 60 liters of diesel, an old filter element and 120 tons of coal, he gave the thirteen survivors a glimmer of life. If there is a door in another world, only he can pass through it. He can move medicine, instruments and key parts, but he cannot move the hundreds of tons of coal that the thermal power plant consumes every day. If he wants to keep the lights on, he can only repair boilers, seize coal mines, build railways, and reconnect mankind's electric age bit by bit in the frozen ruins of the world.