A Game Account Carries The Entire Apocalyptic City

Synopsis: 

In the fifteenth year since the infected invaded, Qi Li and her family live in an old house, without enough food to keep themselves fed and warm, while having to stay constantly on guard day and night against the zombies wandering through the city coming to their door.

During one trip outside in search of a way to make a living, an unexpected accident occurs, and Qi Li transmigrates.

She arrives in a place where there are no black clouds in the sky and no strange odors in the air, where the people are all healthy and the buildings are all pristine and new.
Walking through an orderly school campus, she realizes that she has transmigrated into the body of a high school student.
Even more unbelievable is that the phone inside her schoolbag has a game installed on it called Walled City and Survivors.

Qi Li opens the game—and is stunned to see her own house appear right before her eyes!
There are very few playable options in the game, and she cannot control her family members, but the “Shop” section remains permanently highlighted.
She taps into it, and inside are—
“A Large Bag of Crystal Coins,” “Clean Canned Fruit,” “Clean Honey-Roasted Meat,” “Antibiotic,” “Hemostatic Agent,” “Electric Fence (Durability: 80),” “Shooting Drone”…

After returning to the apocalypse and seeing the supplies she bought in the game actually appear in her hands, Qi Li embarks on an entirely new path to survival!

From then on, every time she transmigrates to the peaceful world outside,
Qi Li focuses entirely on making money, converting all of it into game points, entering the shop, purchasing supplies, then returning home and claiming everything at once.

*
The Alliance Center’s Supreme Commander, buried in endless affairs of state, occasionally checks the exclusive reports from each city—
Commander: Who is Qi Li? Never heard of her.
Commander: A civilian organization can actually hunt high-level infected? I admit this Qi Li has some ability.
Commander: What kind of new weapon has such terrifying firepower… Hm? Qi Li donated a batch to us?
Commander: Investigate it. Who owns that fortress that sprang up practically overnight? Oh. Qi Li again.
Commander: Everyone, the times have changed. That young Qi Li is truly formidable!
Commander: QI LI, SAVE MEEEEEEEEEE!!!

————————————————–
[Female protagonist is 20 years old and mature beyond her years]
[Every member of her family is a good person; no betrayals]
[The protagonist is busy saving the world. At present, I can’t guarantee who the official love interest will be—it depends on how things develop]

….

One-Sentence Synopsis: Why does this game interface show my house?

Theme: There are always more solutions than difficulties.