The king of country A died suddenly, and the only successor was Princess Shansi. A woman can't be king? Women have no brains? Princess Shansi claimed that the queen followed the tradition and went to country B to marry her dead brother's fiancée, but was humiliated on the spot. In anger, Shansi made a curse: "I curse that the throne of country B will never be able to sit on a male. Country B will never be able to give birth to a prince. Even if a prince is born by miracle, it will be short-lived! Please make this throne that insults women only sit on women!" As a result, the two princesses with very different personalities embarked on different paths (what is the introduction saying...) These two are not the protagonists, the protagonists are their descendants. Above.
Purpose: Women's Liberation