Her father is a high-ranking official, and her mother is the daughter of a landowner.
Yet Song Lan, their daughter, nearly starved to death!
Her father may be a high-ranking official, but he's the most incorruptible official in the land, so poverty comes with the job. Her mother may come from a wealthy family, but she remarried, and her family's fortunes have long since faded.
Song Lan, an expert at making money, says none of that is a problem.
She and her eccentric grandparents, uncles, aunts, and sisters sell snacks, open an oil mill, grow peanuts, forge iron tools, and more...
Just as life starts getting better and better, her incorruptible father objects.
Daughter, if you're this rich, how am I supposed to stay an honest official?
Theme: Unity is strength