Suddenly dying, Fang Zhou transmigrates into a post-apocalyptic game called “Old City Ruins,” known for its wasteland elements and alien creatures, and becomes the protagonist’s asthmatic, frail older sister. In this world of environmental degradation, scarce resources, omnipresent superpowered beings, and monsters, a gust of sandstorm could cost Fang Zhou half her life. In the original storyline of the game, the protagonist, who is her younger brother and a leader, had to…