After transmigrating into a book as a supporting female character, Jiang Yao only wants to survive.
Armed with a three-hundred-page conquest guide, she marries Gu Yan, the cold and desireless young master of Yangzhou. He says, "We both love someone else. In three years, we'll go our separate ways." She agrees, hiding all her feelings and perfectly playing the wife he needs. Over the next three years, she learns his likes and dislikes and eases his worries, gently comforting him when he is dejected over his cousin's departure. She thinks everything is under control, never realizing when it happened that his smile makes her heart flutter and his frown makes her ache.
The act became real before she knew it.
When she decides to burn the guide and face the destruction that comes with failing her mission, he catches her in the act. His eyes hold a madness and pain she has never seen before. "Shen Yue Ning, you wove a web of lies and lured me into it."
"Now that my heart is trapped, how can you, the one responsible, expect to escape unscathed?"
"In this life and the next, we will be bound together until death."
The female protagonist is familiar with the Art of War and the Thirty-Six Stratagems, and the male protagonist changes her mind and then pursues love later on. The emotional pull between the two parties is quite strong, and the ambiguity in the early stage of the relationship is the most interesting.