The title is meant to evoke the story's central theme. This story is called Book for Mu Jun.
Mu Junhua thought she entered the palace to secure a peaceful life for that person. But the world never unfolds as anyone expects.
Eighteen years ago, her father abandoned her mother. Later, when her mother took her north to find him, she died just before reaching the end of their journey. From then on, nothing went as Mu Junhua had planned.
On the day she entered the palace, she was glad at least one thing remained in her hands. But in the end, even that was scattered in the rain.
So, Mu Junhua, while the world sings a song in admiration of you, I will write a book for you.
Theme: Love is the only beautiful myth that never changes