Doomsday disasters: Start by building a shelter

Description

High temperature+glacial apocalypse+disintegration of the earth+refuge upgrade
Extreme climate disasters occur alternately, surface life becomes extinct, and human civilization comes to an end.
Su Wu traveled to this parallel world and was about to face the threat of doomsday.
Fortunately, he got the apocalyptic survival system. As long as you survive, you can infinitely improve your technology and turn your fantasy into reality.
Gardens, rice fields, forests and fairy-like girls in the sanctuary.
Exoskeleton armor, powered mechas, mobile bases, air and space integrated unmanned mechanical formation——
Build an underground shelter from scratch, and then upgrade it step by step into a giant fortress capable of navigating the star sea.
Finally, in that vast sea of ​​stars, the human empire was rebuilt.