Apocalypse: I Have A Multiplier System

The apocalypse arrived, and humans gradually adapted to the extreme environment. After the apocalypse, Su Jiayi's life at her foster parents' home became increasingly miserable. Her foster mother constantly sought ways to sell her, her cousins wished to eliminate her to lighten their burden, and her foster father attempted to exploit her. It was when her foster parents pushed for her to join the Army instead of their biological daughter that Su Jiayi left home, severing all ties. Upon joining the Army, she fought zombies bare-handed, lacking any superpowers. During a battle near a mysterious location, certain she would die, Su Jiayi accidentally triggered a system, becoming the owner of this enigmatic place. Not only did she gain a safe haven, but also an extraordinary system that allowed her to multiply items obtained from Dimension Hunting. [Ding! Vending Machine Detected! Congratulations, Host, on obtaining Vending Machine X ∞! Start purchasing Vending Machines for 200 Federal Coins] [Ding! Deluxe Room Detected! Congratulations, Host, on obtaining Deluxe Room X ∞! Start purchasing Deluxe Rooms for 10,000 Federal Coins] She established her residential area and grocery store. Her grocery store and rental properties quickly gained popularity, attracting people from various regions. As her business flourished, her former foster parents begged for help, but she turned them away. Oh, and wasn't that the captain of Willow Army, whom she had a crush on? Why was he looking at her as if she were a lost treasure, unaware of her true identity... The story unfolds rapidly in the first 19 chapters. The main plot begins after chapter 20.