Eternal Sky and Once Romantic Moon

The young daughter of the King of the North, who had lost her parents since she was a child, was brought into the Zhao Palace as a princess in marriage. Is her destiny really to get married? If so, how could she become an uncrowned prince in the imperial court? How could he become the so-called Pluto in the world? Without blessing and the aura of the protagonist, how can the heroine get the blood-stained crown?