I Struck It Rich After Arriving in the 1970s

I'm terrible at writing introductions:

An Qianyan had survived the apocalypse to the very end, hoping to live in the new world. She never imagined that one careless face-plant at the final celebration would send her tumbling into a book.

She transmigrated into a family that favored sons over daughters, where the original owner was treated like a useless burden.

So what?

It didn't matter. Luckily, her alchemy skills and her space had come along with her.

It was this awful era that loved using morality to guilt-trip people. With filial piety held above all else, she had no choice but to find herself a temporary place to stay.

The villain was easy on the eyes, but a bit of a hopeless romantic.

But if they were only supposed to be partners, why was he getting handsy?

[Her golden finger is extremely powerful, and the author may go off the rails at any moment, so the heroine may be just as unhinged. Nothing in the plot is meant to make sense.]