The vast land is only square, and Yan Bi can divide the world into four parts. Shen Yu, the daughter of the Right Chancellor of the State of Bi, is dignified, virtuous and gentle. She admires Ji Ying, the son of the Ji family of the four great aristocratic families. When the two families were preparing to marry, they were sabotaged by King Zhao Yin, who issued an imperial edict to choose Yi to enter the palace. Jiang Chenyu had no choice but to go to the palace with the order. But she did not want to become the emperor's concubine and die in the palace, so she recommended herself and asked to be Zhao Yin's counselor. Zhaoyin was impressed by her courage and knowledge, so he sent her as an envoy to the state of Cheng to secretly steal confidential information in the name of celebrating King Cheng's birthday. Who would have expected that the turmoil that rewrote the history of the Four Kingdoms would begin because of such an inadvertent decision... The gears of fate began to turn: from an innocent and pure passionate girl to a queen whose mother worships the world; from a weak woman who allowed herself to be mermaided, to a powerful queen...
