Global Survival in the Gray Fog: From the Start, I Transmigrated into a Giant Python's Belly

[Survival in Another World + Global Transmigration + Decisive and Ruthless + Nontraditional Building and Upgrading]

A gray fog calamity suddenly strikes the entire world, trapping humanity in isolated spaces while alien beasts prowl outside. From the start, Lu Fan is poisoned to death, only to transmigrate into the belly of a giant python, where he awakens a Survival System in this desperate predicament. He earns Survival Points through any action that improves his odds of survival, from hunting alien beasts to defending his territory. By making use of the System's shop, which refreshes daily, he grows stronger without pause!

With both martial arts and supernatural abilities, his path ahead is filled with slaughter and the unknown. Only by fighting to stay alive can he uncover the ultimate secret behind this fog.