One-line summary: After transmigrating into his wife's ex-boyfriend's body, he discovers that his wife really doesn't love him.
Qi Yingyao is a young emperor. After ascending the throne, he makes his beloved Crown Princess, Lady Wei, his empress.
In the second year of his reign, their first child is born, and Qi Yingyao immediately names their son crown prince.
"Hanchai, in this life, you are the only one for me." In the throes of passion, the emperor makes a solemn vow to leave the six palaces empty for her.
With their newborn in her arms, Wei Hanchai is held in Qi Yingyao's embrace. For the first time, he knows what it feels like to have a home.
In the fifth year of his reign, the young General Shang returns victorious. Delighted by the great victory over the Northern Di and with a woman of the Shang family entering his harem as a consort, Qi Yingyao grants him permission to visit the palace often.
But every time Shang Hengyu visits the harem, it turns out he is not there to see his sister, but the Empress Wei in Kunning Palace.
Only belatedly does Qi Yingyao realize that his empress had given her heart to someone else long ago.
Shang Hengyu and she were childhood sweethearts who had already pledged themselves to each other. If not for the late emperor's decree, they would have been married.
Depose her, confine her; demote him, send him away.
He should bring these lovers together.
Qi Yingyao dies in his early forties, but why does he wake up in Shang Hengyu's body?
The new emperor ascends the throne and invites the young General Shang back to the capital, ready to ennoble him and appoint him to high office.
Qi Yingyao doesn't need to guess. This must be the will of the current empress dowager: the empress he deposed with his own hands, his beloved, Hanchai.
"My beloved, you never fell in love with the late emperor. You've been waiting for me all these years, haven't you?"
Faced with the tearful question from her old lover, Wei Hanchai nods.
Qi Yingyao looks at his former wife, showing such tenderness for the first time. For the first time, she is so alluring and bold in bed, and for the first time, she clings to him so passionately...
Qi Yingyao knows how to be an emperor, and he knows how to be a subject, as well as the empress dowager's lover.
When he discovers that Shang Hengyu has been secretly raising troops and plotting rebellion, the tension inside him finally snaps.
"Hanchai, your taste is awful. The man you long for only sees you as a chess piece! A tool!"
He deliberately leaves an opening for the empress dowager to discover the Shang family's dirty dealings.
He will wait for his beloved to put a knife in the heart of her former lover with her own hands.
Theme: Done is better than perfect