Poison Blade of the Apocalypse: the Palm of the Cold-Faced President

Su Wan, a top surgeon in the 21st century, accidentally traveled to a zombie-infested apocalypse and was forced to struggle to survive in a desperate situation. In an accident, she was involved in a conflict between two major forces. Because she accurately shot the leader of the other side (purely a coincidence), she was mistaken by the world's most mysterious killer organization "Night Owl" as a wild master with extraordinary talents, and was forcibly absorbed. From then on, she saved lives with the scalpel in her left hand, and harvested lives with the sniper rifle in her right hand. She fought her way through the apocalypse, and unexpectedly became the only "variable" that the feared president of the organization could not control.