Shen Yuanmin, the orphaned daughter of a military family, keeps her ingenious mechanical skills hidden from the world.
She heads to the border and studies military equipment, all to clear her family's name and keep her elder brother safe.
What she doesn't know is that the cool, proper heir to the marquis's household has long been secretly in love with her.
He follows her through a thousand miles of war and danger, protecting her at every turn.
A gentleman in public, consumed by jealousy in private.
Across all the lands beneath heaven, she has always been his one and only obsession.
