Secret love is lovelorn, but not necessarily lovelorn.
As the heroine of the whole drama, Bai Zhi is an important clue to this article. The male protagonist is just a passer-by in the heroine's life, but he gives the heroine an unforgettable memory.
I really don't know if the two of them are sweet or sad, I just know that their thoughts seem to be slightly in common but not that much in common.
Purpose: Love is not the only thing in life