Global Catastrophe: I Have a God-Tier Shelter

Survival Stories Set in the Ice and Snow, on Trains, at Sea, in the Mist, in Forests, in Deserts, and More

No System, one female lead or no female lead, and nothing mindless.

A Lone Survivor Hoarding Supplies in Their Spatial Storage, No Martyrlike Good Samaritanism or Nasty Side Characters, Staying Hidden Alone From Start to Finish

Recommend Some Books About Building a Shelter and Upgrading It with a System

I want to read books similar to Global Catastrophe: Building an Underground City from the Start.