Transmigrating into a Book: The Tough Female Educated Youth and Her Sweet Wife in the 1970s

[Strong heroine + transmigrates into a book + sweet romance + devoted to each other]

Xu Anning, a mechanical engineering genius, had just finished a project and was about to head home for a vacation when she suddenly passed out. When she woke, she was in a strange world, and she had become a wicked supporting female character???

And the heroine was her own cousin! Well, I'll be.

Who cares about the rules? Since none of you want me around, I'll sell the house and head to the countryside to help build it up.

But that sickly guy is kind of handsome. What should I do? I'm a little tempted...

Whatever. I'm rich and capable. I'll bring him home and take care of him.