Apocalypse's Poison Blade: The Cold-Faced Guild Master's Darling

Su Wan, a top surgeon of the 21st century, accidentally transmigrates into a post-apocalyptic world overrun by zombies and is forced to struggle for survival. During an unexpected encounter, she gets caught in a firefight between two major factions. After she precisely shoots the opposing leader, purely by chance, the world's most mysterious assassin organization, Night Owl, mistakes her for a naturally gifted, untrained expert and forcibly recruits her. From then on, she saves lives with a scalpel in her left hand and takes them with a sniper rifle in her right, fighting her way through the apocalypse. She also unexpectedly becomes the one "variable" that the organization's fearsome president can never control.