Apocalypse: I Build A Doomsday Train

When natural disasters rage, extreme cold and storms spread infinitely...
When global mutations occur, zombies flood like tides, and horrific anomalies appear...
When the apocalypse arrives, massive devouring abysses with diameters of hundreds of kilometers begin to appear around the world...
When people look up to the atmospheric clouds and see the slowly emerging giant corpses of evil gods...
From that day on, people started to notice that the time of sunrise became later and later,
until the sun no longer rose, and what awaited was an endless polar night.
To survive, on that day, the doomsday broadcast announced to the world for the last time:
Everyone, head east, escape the dawn!
...
Lin Xian awakens the "Mechanical Heart" ability, allowing him to devour machines to gain various mysterious skills, scan machines for blueprints to create new machinery, and even use his mind to synchronously drive various machines.
Thus, he finds a 200-ton heavy gas locomotive, pulling specially modified storage, planting, production, medical, and living carriages, embarking on a 320,000-kilometer journey along the star orbit, charging eastward!