She is the Ninth Princess who came back from the apocalypse. She is subject to a compulsory life extension system. She has no choice but to act recklessly in order to save her life. This is an intractable worry in the emperor's heart.
He is Xie Yanchen, the son of the prime minister. He is extremely talented and unpredictable, but he has no desire to gain power in the court. He spends his days idle and away from the world. Although the emperor tries to attract him in every possible way, he is still difficult to control. This is another problem of the emperor.
No one could find a way to control these two serious worries that made the emperor uneasy day and night.
Until one day, the emperor suddenly discovered a way to manipulate Xie Yanchen and found a way to restrain the nine princesses.
In a moment of thought, the emperor made clever arrangements and turned these two thorny hidden dangers into two powerful arms in the court, but he did not want to send his youngest daughter into the hands of powerful ministers...