By chance, He Yumu and three friends traveled to an ancient dynasty. This was an imaginary dynasty that had never appeared in history.
She originally wanted to live in the time-traveled dynasty, but when her friends died and she wanted to commit suicide and leave, she accidentally became the prince's new princess.
It's not that simple, this princess seems to be plotting to usurp the throne...
Intention: There will be times when strong winds and waves break, and sails will be hung directly to help the sea.