In the year 1500 of the Chen Yuan era, the nation was in turmoil and the realm was on the brink of collapse. The emperor named the baby girl just born to the empress as Crown Prince, and the chancellor's eldest daughter as Crown Princess. He selected Gu Luoxi as regent, while Imperial Guard Commander Yu Zhen fled with the crown prince... (Crown Prince Zhao Qingle is a girl, while Crown Princess Yu Qingpei is a boy. Zhao Qingle is taken outside the palace to be raised, and Yu Qingpei even takes the female lead's place in the palace as her stand-in.) The female lead becomes emperor, and the male lead becomes empress.
(A story with a powerful female lead, who sets out to conquer the realm.)