The Infinite Train Gave Me 20 Matches and a Rusty Railcar, Not Knowing My Cheat Upgrades Anything

If the video gets 50 comments, I’ll post part 2. A boy wakes up as a girl with 20 matches and a cheat that upgrades anything. A truck kills him, a survival train drops him into a pretty girl's body with five days to cross 500 kilometers, and the system hands him a rusty hand-pushed railcar. His talent, the Cheng Codex, turns everything he uses into legendary gear: a box of matches becomes an endless lighter, a dagger becomes a death curse, a backpack becomes a space bag. Then come the first steam engine, a fire lion, a sword-saint who cuts a train in half, and a best friend who is also trapped in this world. If you like LitRPG, OP MC, isekai, apocalypse survival, reward systems, monster fights and a manhwa recap told with dry humor, this one is for you. What would you upgrade first? (19900)