Working in the Military Industry in a Period Novel [Book Transmigration]

Engineer Qin treats every kind of nonsense! Qin Mian, a fake timid little nobody with social anxiety, transmigrates into the period novel as the female lead's awful best friend. Her mouth is sweet, her heart is sharp, and she never pulls her punches! The female lead is gentle and virtuous! Qin Mian is ruthless and idle! According to the plot, she drugs the male lead, but by a twist of fate, it's his deep-thinking comrade who ends up sleeping with her. Then she's dragged out of the room and tossed aside. Her reputation ruined, she's quickly married off to an old man in the village. New to this world, Qin Mian timidly hugs herself, thinking of that broad-shouldered, narrow-waisted man with his upright bearing. Engineer Qin decides to make a tactical retreat. But can someone tell her why the man who swore he'd rather die than give in is now insisting on taking responsibility for her? Engineer Qin says: I only want to build a career, not get involved with men! Captain Shen: Forced to take responsibility, then actively vying for her affection! Engineer Qin: Pretends to be socially anxious, ends up becoming a terrorist! Reader's guide: 1. The female lead is highly intelligent and shines in her professional field. 2. This is a fictional period setting! It includes original worldbuilding and has a classic wish-fulfillment style. 3. Please be kind to one another in the comments, friends. Love you, love you~ Theme: Be self-reliant and independent. Knowledge changes your destiny!