His Royal Highness the Crown Prince Becomes the Crown Princess

She thought she had to disguise herself as a man in order to become the prince. As a result, after being the prince for eighteen years, he discovered that he was not the emperor's biological child! Now I don't dare to fight for the throne, and I don't dare to be the prince. Want to run? But she found that she had already fallen into someone's gentle trap! As a result, His Royal Highness the Crown Prince became the Crown Princess.