I Took My Space to the 1970S, and the Chaste, Rugged Man Spoiled Me Rotten

[Sweet-talking but ruthless young educated woman & abstinent, taciturn, rugged man] She is a demon. After making a deal in a dream with a girl whose life is full of misery, she arrives in the 1970s. Her awful relatives have taken over the house her late father left behind, so Lu Jiaojiao sells it outright and sends them back to the countryside in disgrace. Her transmigrated cousin stole her place at a university for workers, peasants, and soldiers, then encouraged her to go to the countryside to help build a beautiful motherland. Since her cousin is so kind, Lu Jiaojiao helps her withdraw from school and sign up to go down to the countryside too. Her younger cousin tries to poison her to death, but she scares him so badly he ends up with the wits of a child. If she doesn't deal with a rotten seed like him, who knows how many people he'll poison in the future? Her mother wants to ditch her as a burden and remarry, so Lu Jiaojiao goes straight to the door and ruins the wedding. Someone unfit to be a mother shouldn't remarry and bring more burdens into the world. Her reborn best friend plans to steal the husband she had in her previous life. Lu Jiaojiao lets her have him. There are plenty of men out there! Besides, she didn't go to the countryside to fall in love. Wait, that demobilized, rugged soldier is so handsome it's practically an affront to humanity. It might be fun to find a man to keep her company when she's lonely. She can just toss him aside when she gets bored. But then she discovers she can't get rid of him...