I Swept Dust in the Library and Became the Best in the World

Su Ruan is an inconspicuous palace maid in the library. She is timid, clumsy, and even a little stupid. No one knows that this girl who sweeps dust every day is the contemporary "Shadow Master" of the most mysterious intelligence organization "Ghost Shadow" in the world. With an edict, she was assigned to the seventh prince, who was rumored to be ruthless and scheming. Everyone thought she was dead. Little did they know that what they thought was a wolf was actually a hunter. And this hunt has just begun.