Apocalypse Descends: My Space Makes Me Invincible

From the start: rebirth + apocalypse + pocket dimension + stockpiling supplies

The world falls apart: typhoons, floods, extreme cold, extreme heat, earthquakes, tsunamis, acid rain, tectonic collisions, a wandering Earth, rebuilding homes...

Lin Shi was disemboweled one second, then opened her eyes the next to find herself back one month before the apocalypse.

As her consciousness returns, she smirks and immediately begins a frantic supply-hoarding spree. She also goes back early to save Xiaohua, who died for her in her previous life.

Early days of the apocalypse

Scumbag father and stepmother: “Lin Shi, we've raised you all these years. Now it's your turn to support us.”

Fake-sweet stepsister: “Sis, as long as you go find food, I'll make sure Mom and Dad don't kick you out.”

Scumbag and his mistress: “Lin Shi, we're old classmates, after all. Give us something to eat, just a little.”

Unhinged Xiaohua: “Raise mud! Find mud! Feed mud!”

Lin Shi: “Tsk, I've been so busy collecting supplies that I forgot to deal with you. Just wait!”

(Lin Shi is decisive and ruthless, not a saint, and knows who deserves her gratitude and revenge. Xiaohua is naive at first, then becomes unhinged after being reborn later on. She's flawed, and her guiding principle in life is: If Sister Shi lives, I live. If Sister Shi dies, everyone dies with her.)