She is a "digital detective" at a top modern accounting firm, a calm and decisive forensic accountant, and her lifelong belief is to use data and evidence chains to build irrefutable truth. Outside of work, she is obsessed with ancient book restoration and typography, and can decipher secrets from hundreds of years ago from the fibers and ink marks on yellowed pages. Once she traveled through time, she became a deposed concubine in the cold palace of the imperial palace. She was implicated because her uncle, who had great military exploits, was framed and plotted against her. The royal family is in strife and the family is in danger. She is given an ultimatum: within three months, she must prove her innocence and vindicate her uncle, otherwise she will be thrown into jail. Facing the mystery of ancient power, her only weapon is the modern knowledge in her mind.
At first, all she did was just the ultimate challenge of "occupational disease" - she wanted to see how much the professional skills she was proud of were worth in an ancient society divorced from modern technology. For her, this life-and-death self-rescue is the ultimate intellectual game. However, as she uncovered the huge financial crime network disguised as a "rebellion", she had countless confrontations with the emperor who held the highest power. What he admired was not her appearance, but her logical mind that could pierce through all lies. From testing each other to cherishing each other, they formed the strongest alliance during the sand table deduction and file analysis in the royal study room.