Hai Tang closed her eyes, opened them again, and found herself reborn in Gusu?
Her parents are loving and run a small fabric shop.
Her elder brother is upright and refined, with a literary flair and a promising future at the Hanlin Academy.
Though her family has no mountains of wealth, they are comfortably well-off by the standards of Pingjiang Prefecture.
Just as life is getting better and better, she hears that something has gone wrong with the family shop?
A cousin suddenly turns up at the Lin family's home next door, and keeps sneering at the Su family whenever she sees them?
With the provincial examination approaching, two of her brother's classmates show up to freeload on their meals and lodging?
With one little problem after another, Su Tang wipes the sweat from her brow, rolls up her sleeves, and gets to work. What's there to be afraid of? She has a little golden finger called "Peach Blossom Spring," with a pool of miraculous spring water and the household property and land she saved up while working as a maid in her previous life. She's got plenty to fall back on!
As for the little nobodies who jump up and down in her daily life, she can just let them be. As long as she's around, her family will keep living better and better.
(Some creative liberties have been taken; please don't overanalyze.)
(I can't please everyone. If you don't like it, please leave promptly instead of making a scene here. Thank you.)