Because he has built railroads all his life and has witnessed too many sacrifices, he knows that every inch of road is paved with life;
Because he knows how precious the road is, he is not willing to waste any resource, even a rusty shovel;
Because he does not waste resources, he can build a workshop in a pile of junk;
Because he was able to build a workshop, he was able to attract like-minded people;
Because there were people following him, he was able to build the railway;
Because he built the railway, the souls of those who died could return to their hometowns;
Because the sacrificed person came back, he dared to face the evil god and say "I have a million lives behind me";
Because he allowed the heroic spirit to rest in peace, the heroic spirit appeared when he needed it most;
Because the heroic soul appeared, he won;
Because he won, the road was open;
Because the road is open, the living can go home and the dead can rest in peace.
This is the closed loop of cause and effect in "National Destiny on the Rails".
An old engineer who has spent his whole life building railways traveled to a copy of the National Destiny and used the most basic engineering wisdom to rebuild industrial civilization in a pile of scrap iron, allowing the real motherland to gain a leap in the National Destiny every time a section of road was built.
