The Empress Is Unapproachable

After the Empress miscarries upon discovering the Emperor cheating, she feigns pregnancy. On the day of her delivery, she witnesses Princess Liu swapping the baby, pretending not to know while raising the princess's son as the heir. During the coronation ceremony, the princess claims a mistake was made, but the Empress reveals the truth, abolishes and executes the Emperor according to the late emperor's decree, and ascends the throne as the female ruler.