I'm a Laid-Back Real Heiress with a Little Mystical Know-How

The beloved eighth daughter of the Jiang family turned out to have been switched at birth! The real heiress who found her way back home... Was useless at music, chess, calligraphy, and painting, and couldn't manage a single school subject! The wealthy families of the capital had never seen such a hopeless heiress. Everyone was waiting to watch the spectacle and laugh at her. She really was the heiress, and she really did slack off. Yet with her metaphysical skills, she overcame one challenge after another and became someone all the powerful figures were eager to curry favor with. With her own efforts, she even helped her seven useless older brothers win back their wives, saved the Jiang family from disaster, turned the tables, and inherited a fortune worth billions! The people who'd come to watch were dumbfounded. Were they the real joke all along? Meanwhile, the young master of the Zhou family smiled. “Xiao Qingwan's only a little sharp-tongued!” “...” Everyone fell silent. That wasn't just a sharp tongue. It was like her words had divine power!