[Strong female lead, no romance, two worlds, tycoon System, infrastructure development, apocalypse, natural disasters, pocket dimension, special abilities, secret identities, decisive and ruthless]
Three years into the apocalypse, Siyan struggles to survive as a human decoy, with no special abilities.
On the brink of death, she unexpectedly binds to a System, but it turns out to be a tycoon System.
In the apocalypse, money has long since become worthless paper. But in the peaceful second parallel universe, cash is still king.
Siyan moves between two worlds: one is a sea of corpses, where humanity fights to survive against all odds; the other is thriving, vibrant, and dazzling.
Using the money from her System, Siyan steps into the world of fame and fortune in the second world, while helping build up humanity's bases in the first!
(This blurb is terrible. Pretty much all the key elements are in the first line.)