In a car accident, Su Wan, a doctor of mathematics, traveled through time and became the legitimate daughter of a good-for-nothing with the same name.
The pig cage sinks into the pond, the stepmother is dying, and the line between life and death——
But she holds a hand that others cannot understand.
Probability theory allowed her to calculate the truth from the crowd; abacus and mental arithmetic allowed her to be invincible in the imperial examination; operations research allowed her to defeat more with less in the court.
She disguised herself as a man and entered the court, winning the hearts of the world, but she never relied on anyone.
Three men fell in love with her——
Prime Minister Pei Xuan, who has all the power in the government and the public, has many plans but cannot figure her out;
The fifth prince, Shen Jinghong, was a talented man but willing to be her confidant;
The secret guard Gu Changqing, who returned from the battlefield, changed from a killing knife to a shield to protect her.
She could have been anyone's pawn.
But she chose——
Playing the chess piece, I am my own king.
